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How Does Tensile Testing Work?

Tensile testing, also known as tension testing, is a type of mechanical test used to determine how a material responds to a stretching force. This test helps evaluate the mechanical properties of an object, such as metals, polymers, composites, and various other materials.

Performing a tensile test applies a load to specimen, and gradually increasing the load sometimes until failure or destruction. The tensile data is analyzed by using a stress-strain curve.

Interface stain gage load cells are commonly used in tensile testing due to their high precision and sensitivity. They work by measuring the strain in a material, which is directly related to the applied force. This strain data is then converted into force measurements. Learn more in Tension Load Cells 101.

Tensile testing is fundamental in test and measurement. It is used by researchers, testing labs, and engineers across industries including infrastructure, medical, manufacturing, aerospace, consumer goods, automotive, energy, and construction.

How Tensile Testing Works

Tensile testing is essential in materials science and engineering to understand the material’s behavior under tension and to ensure its suitability for specific applications.

First, a specimen of the material is prepared with a specific shape and dimensions. This sample is carefully controlled to meet testing standards based on the test plan.

Interface supplies a variety of load cells for these tests. The load cell is typically mounted in a tensile testing machine. The tensile test machine has two separate jaws, one of which will move away from the other at a controlled rate during the test. As it moves away, it is pulling on the material, stretching it until it the test is complete, or it breaks. This is also referred to as testing to failure or destruction. The controlled rate is called the strain rate, and materials will behave differently under different strain rates.

The specimen is then securely mounted in a testing machine, which is usually called a tensile testing machine or universal testing machine. The load cell is positioned in such a way that it bears the load applied to the specimen during the test.

Load cells are commonly used in tensile testing to measure and record the force or load applied to a specimen during the test. These sensor devices are crucial for accurately determining the mechanical properties of materials under tension.

The testing machine applies a pulling force (tensile force) to the specimen along its longitudinal axis. The force is gradually increased at a constant rate, causing the specimen to elongate.

As the tensile testing machine applies a pulling force to the specimen, the load cell measures the force in real-time. This force measurement is typically displayed on a digital instrumentation device or recorded by a data acquisition system.

The recorded data, including the applied force and the corresponding elongation or deformation of the specimen is usually plotted on a stress-strain curve for analysis. The stress-strain curve provides valuable information about the material’s mechanical properties, including its ultimate tensile strength, yield strength, Young’s modulus, and elongation at break.

Engineering Checklist for Tensile Test Plans

  • Identify the Purpose of the Tensile Test
  • Select the Material and Test Standard
  • Define the Mechanical Properties
  • Determine the Specific Mechanical Properties for Evaluation
    • Common properties include tensile strength, yield strength, modulus of elasticity (Young’s modulus), elongation, reduction in area, stress-strain curve characteristics
  • Establish Test Conditions
    • Include temperature, strain rate and testing environment
  • Define Sample and Specimen Requirements
  • Determine Measurement Accuracy Requirements
  • Prepare Instrumentation and Equipment
  • Plan for Data Recording and Reporting
  • Review Compliance Requirements and Safety Standards
  • Document Test Plan
  • Publish Verification and Validation Processes
  • Report Results

Defining measurement requirements for tensile tests by specifications is a crucial step in ensuring that the tests accurately and reliably assess the mechanical properties of materials.

Tensile Testing Terms to Know

Stress: Stress is the force applied per unit cross-sectional area of the specimen and is usually denoted in units of pressure. Stress is calculated by dividing the measured force by the cross-sectional area of the specimen. The load cell’s force measurement ensures that the stress values are accurate and precise. Simply, stress is the amount of force applied over a cross-cross-section.

Strain: Strain represents the relative deformation of the material and is the change in length (elongation) divided by the original length of the specimen. Strain is the amount of elongation in a sample as it is stretched or squashed.

Elastic Region: In the stress-strain curve, the initial linear region where stress is directly proportional to strain is known as the elastic region. Here, the material returns to its original shape when the load is removed.  As soon as a material is placed under any load at all, it deforms. Visually, the deformation may not be noticeable, but right away, the material is deforming. There are two types of deformation: elastic (not permanent) and plastic (permanent).

Yield Point: The yield point is the stress at which the material begins to exhibit permanent deformation without an increase in load. It marks the transition from elastic to plastic deformation.

Ultimate Tensile Strength (UTS): UTS is the maximum stress the material can withstand before breaking. It is the highest point on the stress-strain curve. If the material is loaded to its UTS, it will never return to its original shape, but it can be useful in engineering calculations, as it shows the maximum, one-time stress a material can withstand.  Load cells can detect the exact moment of specimen failure, such as fracture or breakage. This information is crucial for determining the ultimate tensile strength and other mechanical properties of the material.

Elongation at Break: Elongation at break is the amount the specimen stretches before it breaks, expressed as a percentage of the original length.

Load cells can also be used for real-time monitoring and control during the test. Test operators can set specific load or strain rate parameters to control the testing machine’s operation and ensure the test is conducted within specified conditions.

Load cells play a safety role by providing feedback to the testing machine’s control system. If the load exceeds a certain threshold or if the load cell detects an anomaly, the testing machine can be programmed to stop or take corrective actions to prevent damage to the equipment or ensure operator safety.

To discuss Interface products and experience in tensile testing, be sure to reach out to our global representatives in the field or contact us. We are always here to help!

Engineered Solutions for Lifting Webinar

Interface’s technical webinar Engineered Solutions for Lifting details measurement devices used in lifting equipment, machines, and vehicles to improve operations. Interface load cells and instrumentation are used in operating cranes, for hoisting heavy objects, and measuring forces in infrastructure projects. Interface experts will provide answers as to how load cells are used in safety monitoring for lifting equipment. Learn about Interface sensor products suited for integration into existing equipment, as well as for test and measurement projects.

Interface Solutions Aid Pharmaceutical Industry

Among the many highly regulated and incredibly complex industries, the medical industry is highly dependent on tools and resources that are precise and measure with high accuracy.

The medical industry is a broad, encompassing hospitals, medical professionals, payers, medical devices and pharmaceuticals. In each sector, Interface has a long history of providing precision measurement solutions for R&D, prototyping, testing, manufacturing, packaging and monitoring use.

In every use case, safety of patients and quality of products is predicated on extreme accurateness. Throughout a pharmaceutical product’s life cycle, specialized measurement equipment and sensor technologies are used by scientists, engineers, researchers, lab technicians, regulators, quality groups and manufacturers. These instruments are utilized in design and maintenance to provide unmistakable evidence of process quality and safety.

Medical and healthcare companies, including those specifically in pharmaceuticals, turn to Interface because our high accuracy force measurement solutions are designed for reliable performance test and measurement projects. The science used in the pharmaceutical industry depends on quality measurement of force and weight. Interface load cells are designed for these types of precise requirements. There is also tremendous demand for Interface’s ability to customize solutions that meet the exact measurement requirements of these sensitive applications. Visit our new Interface Pharmaceutical Industry Solutions.

Interface supports a range of pharmaceutical applications including:

  • Weighing and distributing
  • Specimen testing equipment
  • Tablet hardness testing
  • Tablet forming machine optimization
  • Capsule filling machines
  • Quality control and safety
  • Mixing
  • Packaging and filling
  • Bioreactors and fermenters

Interface force measurement solutions are used for a variety of pharma-related products and machines that help biotechnology and pharmaceutical product engineers to design, test, and manufacture their products.  When it comes to equipment used in the manufacturing of medicine, Interface products are used to optimize production and reduce waste. Our miniature load cells are often integrated into machines and equipment to provide precision measurements during operations.

Types of Interface Load Cells Used by Pharmaceutical Companies

Pharmaceutical Tablet Forming Machine Optimization

A pharmaceutical tablet producer wanted to monitor the forces applied by the tablet forming machine to understand the relationship between raw material, die set, forming force, and the motor’s cycle speed. The goal was to improve productivity and efficiency of the tablet forming process, while reducing losses such as cracked tablets or voids, by adding a dimension of feedback that could be used to assign specific press adjustment criterion for given inputs. An Interface WMC Sealed Stainless Steel Mini Load Cell (10K lbf Capacity) was mounted in the section of the downward press bar. The machine was modified to accomplish this. The load cell was then connected to a 9320 Portable Load Cell Indicator to collect the needed data. After analyzing the data, the tablet producer was able to quantify adjustment levels by monitoring which forces produced the most optimal results for a given cycle speed, die set, and raw material. Productivity and efficiency were greatly improved by the enhancement of the data feedback.

Tablet Hardness Testing for Pharmaceuticals

A pharmaceutical producer wanted to test and monitor the hardness of the pills being created in their tablet forming machine. Interface’s SML Low Height S-Type Load Cell was mounted to the hardness device inside the tablet forming machine. The SML Low Height S-Type Load Cell was then connected to the 9870 High-Speed High Performance TEDS Ready Indicator to record the force measurements. The tablet producer was able to verify and test the specific hardness needed for their tablets being produced by their tablet forming machine.

Pharmaceutical Tablet Machine Hardness Calibration

A customer wanted to regularly recalibrate tablet hardness testers. The customer needed a miniature load cell the size of a sugar cube that replaces the tablets and fits horizontally in the tablet test-box. Therefore, a special cable exit was important for the compression only calibration application. In the past, the machines had to be rebuilt for calibrations, or a complex mechanism had to be integrated to enable vertical calibration. However, Interface’s MCC Miniature Compression Load Cell measures forces on its side with a special cable exit on the flat side that attaches to the calibration indicator, such as the Interface handheld indicator and datalogger Model 9330. The MCC load-cell calibration set compared the applied forces with the hardness tester to make sure that the tablet hardness tester uses the correct force for future tablet hardness tests. The BlueDAQ software helped to log and compare the data of the MCC reference load cell. The customer successfully verified and calibrated the tablet hardness tester machine horizontally to conduct accurate hardness testing on tablets in the future. Interface’s MCC Miniature Compression Load Cell was perfect due to its small size, and convenient to measure the forces on its side.

Like medical devices, pharmaceutical machines and products must undergo a variety of mission-critical tests before they are safe for distribution to uses. Interface products are selected by the pharmaceutical industry is due to our product’s accuracy and reliability, in addition to our deep experience in supplying solutions to those in the medical business.

Pharmaceuticals_InfographicPoster

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Accuracy Matters for Weighing and Scales

 

Why Product Design Houses Choose Interface

When people think of force measurement, they often think that it is a tool for testing products. However, load cells, torque transducers and multi-axis sensors also play a fundamental role throughout the entire product design process. In fact, many products today actually design force sensors directly into products.

Product design houses are companies that fulfill outsourced design work for a variety of industries. These specialized design houses are contracted to develop and bring products to life.

A product design house primarily focuses on designing physical products or tangible goods. The services they offer to product makers, engineers, manufacturers, and innovators typically involve the entire product development lifecycle, from conceptualization and design to prototyping and manufacturing.

Due to our experience and expertise across multiple industries, Interface collaborates with product design houses in identifying the right sensors and systems to use during different stages of the design process. Whether it is for accurately measuring forces for impact and fatigue testing, identifying precise weights for packaging, modeling consumer usability, or testing material strength, Interface products are chosen by design houses based on their range of capabilities, accuracy, versatility and quality.

How Product Design Houses Use Interface Products

  • Concept Development and Prototyping: Product design houses often use Interface product design files when refining their initial product ideas or creating new concepts. When the products move into physical modeling, Interface products are used for testing and validation at this early stage.
  • Industrial Design: Industrial designers use Interface load cells and other sensor products for measuring functionality of the product.
  • Design Validation and Testing: Conducting tests and simulations to validate the product’s performance, durability, and safety are the number one reason why design houses utilize Interface measurement solutions. Design houses put sensor technologies into products to provide force data for user feedback, to optimize performance, safeguard consumers and activate components.
  • Mechanical Engineering: The mechanical engineering team of a design house will connect with Interface when they are working on the technical phases of product design. Our products are used to help ensure the final product can be fabricated efficiently, performs consistently, and meets applicable safety standards.
  • Materials and Manufacturing: Experts at design houses that are versed in materials science and manufacturing processes will consult with Interface in finding measurement solutions that can access and validate material testing and production systems. Within the manufacturing realm, these devices are employed in quality control processes to ensure consistent product standards.
  • Packaging: If a product has packaging that must meet durability, temperature, pressure or fatigue requirements, Interface will provide sensors and instrumentation for design testing.
  • Regulatory Compliance and Certification Support: For products subject to regulatory standards, design houses utilize high accuracy measurement solutions in creating specifications, reporting, and compliance requirements before moving to market.

These services can vary from one product design house to another, and some design houses may specialize in specific industries or types of products.

Product design houses leverage Interface load cells across various industries to measure and monitor forces and weights with precision. For example, in medical device development, Interface miniature load cells are used for patient lifts, ensuring secure and accurate weight measurements.

Whether used in material testing, robotics, or agricultural machinery, load cells enable product design houses to create innovative solutions tailored to specific industry requirements, enhancing overall product performance and reliability. Here are a few examples of house product designers use force measurement solutions during the design phase.

Furniture Fatigue Cycle Testing

To meet safety protocols in relation to the manufacturing of various furniture products, fatigue testing, shock testing, and proof testing must be rigorously performed before diffusion into the marketplace, and into the homes of consumers. Force testing of furniture products is critical in determining the posted max loads to protect manufacturers from liability due to damage that might result from the misuse of those products and overloading. Using Interface’s SSMF Fatigue Rated S-Type Load Cell along with Interface’s 9890 Strain Gage, Load Cell, & mV/V Indicator provided a solution that measures the force being applied in fatigue cycle testing of a furniture product, in this case, testing the rocking mechanism in an office chair. Throughout the testing phase, changes were made to the design to improve the safety and life of the furniture, ensuring product quality and protecting the manufacturer from future liability.

Self-Checkout Kiosk Functional Testing

To assess the design of self-checkout kiosks, part of the development cycle is to ensure the weighing feature is functioning properly with the right amount of sensitivity when customers want to weigh products like fruits or vegetables. The designers also needed a system that measures the force it takes for the self-checkout kiosk to activate a response for consumers. Interface suggested installing SSB Load Beam Load Cells under the plate where items are weighed. When connected to the WTS-AM-1E Wireless Strain Bridge Transmitter Module, force results are wirelessly transmitted to the WTS-BS-6 Wireless Telemetry Dongle Base Station on the customer’s PC. Data can be logged and graphed with included Log100 software. Interface’s wireless force system successfully measured the amount of force it took for the self-checkout kiosk to react and ensure it is functioning properly.

 

Design of a Prosthetic Foot

In the design of this medical device, the product designers need to know how the foot responds as it is loaded during different stances. To measure this, Interface’s 3A120 3-Axis Load Cell was installed between the leg socket and the prosthetic foot. The 3A120 was then connected to the BSC4D Multi-Channel Bridge Amplifier and Computer Interface Module. Using this solution, data was logged for X, Y, and Z axis. The design house was able to review the results and identify premature flat foot and dead spots during foot’s production for consumer use. They utilized this vital information to make improvements to the design.

Interface works with design houses and product design engineers across the continuum of a product’s development through go-to-market. We supply standard measurement sensors like our load cells, along with custom solutions that are uniquely engineered for a particular use case.

ADDITIONAL RESOURCES

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ForceLeaders Summit Minneapolis

Interface ForceLeaders exclusive technical workshop takes place Tuesday, September 26, 2023, at the Sheraton Minneapolis West Hotel starting at 10:00 AM to 12:00 PM, followed by demos, Q&A and lunch from 12:00 to 1:30 PM. Our force measurement solutions engineers and regional experts will be onsite to share valuable tips and experiences using load cells, torque transducers, multi-axis sensors and advanced instrumentation. Register to join the conversation, come ready with your questions and learn the latest in sensor technologies from industry professionals.

Are Load Cells Used in Vacuum Environments?

Vacuum testing labs are essential for ensuring that products and materials are safe and dependable in vacuum environments. A vacuum environment is an area where there is little or no matter. This means that there are very few gas molecules present, and the pressure is incredibly low. Vacuum environments are often created using vacuum pumps, which remove gas molecules from an enclosed space.

Vacuum environments are used to simulate the conditions that products and materials will experience in space or other high-altitude environments. These types of testing labs typically have a vacuum chamber that can be evacuated to an incredibly low pressure. The vacuum chamber is then used to evaluate products and materials for a variety of properties. Engineers use vacuum environments in testing for reduced contamination, improving heat transfer, and to reduce the weight of products.

Tests performed in vacuum labs are used to determine the rate at which gases are released from a product or material and the ability of a product or material to withstand a vacuum without leaking. Thermal cycling tests are done to assess the ability of a product or material to withstand changes in temperature in a vacuum environment. Other tests are done to understand how the test article withstands exposure to radiation.

Vacuum testing labs are used by a variety of industries, including aerospace, medical, and defense. These labs are common for material process testing and used in R&D. Vacuum testing helps to identify potential problems with products and materials before they are used in a real vacuum environment. Engineers use this type of testing to improve the performance of products and materials and ensure they meet the required standards. Contact Interfaced to explore your options.

Can load cells be used in a vacuum environment?

Load cells can be used in a vacuum environment. However, not all load cells are created equal or suited for this specialized use case. Some load cells are designed that make them appropriate for vacuum environments, while others are not. Load cells that are not engineered to perform in vacuum environments may not be able to withstand the low pressures and outgassing that can occur in a vacuum. Using quality load cells that are manufactured by force measurement experts in sensor technologies is important in any consideration. It is critical to review the specifications and requirements with a qualified applications engineer.

Key considerations when choosing a load cell for a vacuum environment:

  • Outgassing: Load cells that are used in vacuum environments will have low outgassing rates. This means that they will not release gases into the vacuum chamber, which can contaminate the environment and interfere with measurements.
  • Mechanical strength: Load cells must be able to withstand the low pressures that can occur in a vacuum. They will also be able to withstand the conditions that can be generated by vacuum processes, such as outgassing and condensation. Form factor and model material of the load cell are important in choosing a load cell for this use case.
  • Temperature range: Load cells will need to operate in a wide range of temperatures. This is important because vacuum chambers can be very cold, especially when they are first evacuated, or when they are used to simulate high altitudes or space.

If you are looking for a load cell that can be used in a vacuum environment, please review with Interface application engineers to determine if the model fits your test requirements. We also can offer custom solutions to ensure that the load cell maintains the accuracy and performance specifications based on your exact test plan.

Can a load cell be vented for use in a vacuum testing lab?

Technically yes, you can vent a load cell to be used in vacuum. This allows the internal cavity of the load cell to equalize with external vacuum. However, this does not prevent outgassing and can cause the gages and wiring to be subject to humidity and condensation.

Cabling is extremely important when using any sensor in this environment. There are options to make the load cells wireless using Bluetooth technology.

Caution: Interface recommends that all our products used in this type of environment are designed, built, and calibrated for use in this environment. Venting an existing load cell can alter the performance and damage the cell.  By designing the load cell with venting for use, we can ensure that it will meet the vacuum test range.

Interface also can install thermocouples to work with the sensor to detect temperature in this type of testing environment. In fact, our engineers have designed load cells to package the thermocouples inside the form factor for convenience and performance benefits.

Interface engineers have worked with testing labs for decades. We are available to assist with any use case requirements to determine the best measurement solution.

Demystifying Specifications Webinar

Interface’s technical force measurement webinar Demystifying Specifications details descriptions, terms, values and parameters found in product datasheets for load cells, torque transducers, instrumentation and specialty products. Learn from our experts what specifications need critical review, recommendations based on product categories, and the insider point of view on what is most important in terms of specifications for different use cases and tests.

Rigging Engineers Choose Interface Measurement Solutions

Interface supports rigging engineers who design, plan, and oversee the rigging of heavy loads by providing high accuracy measurement solutions. Rigging is the process of using ropes, chains, and other lifting equipment to move and position large objects.

Rigging engineers typically work in maritime, construction, manufacturing, entertainment and energy industries. Interface is also seeing a growing demand for sensor technologies used by rigging engineers that work in aerospace, both for aircraft and space vehicle manufacturers.

The use of load cells to measure the weight of heavy loads, such as cranes, ships, rockets, theater equipment and machinery is on the rise. Rigging engineers use the data from load cells, load pins, load shackles, and tension links to ensure that the loads are not overloaded and that the rigging systems are properly designed for each use case. This often requires pairing the high accuracy sensor with instrumentation. For versatility wireless telemetry systems are useful for rigging engineers.

These vital engineering positions are responsible for rigging up and down cranes, loading and unloading ships, or moving heavy equipment around a factory floor. Rigging engineers that design and plan rigging systems for lifting and transporting heavy loads across various industries rely on accurate measurement data. They often oversee the rigging of heavy loads, ensuring that it is done safely and efficiently. They inspect rigging equipment for wear and tear, and make repairs as needed while maintaining records of rigging operations. Sensors and instrumentation play an important role.

Load cells are an important tool for rigging engineers. They provide valuable information that can be used to ensure the safety of rigging operations, whether they are for mooring tension tests in the maritime industry or for lifting an aircraft for wind tunnel testing. Load cells can be used in a variety of ways by rigging engineers. For example, they can be used to:

  • Monitor the weight of a load in real time. This information can be used to make sure that the load does not exceed the safe lifting capacity of the rigging system. Sensors are often integrated into conveyor systems, hoppers, and other equipment to measure the weight or force being exerted. These devices are often used in industries like mining, agriculture, and manufacturing.
  • Create a load map. A load map is a visual representation of the weight distribution of a load. This information can be used to ensure that the load is evenly distributed, and that the rigging system is properly designed no matter the size of structure or component.
  • Set overload limits. Overload limits are set to prevent the rigging system from being overloaded. If the weight of a load exceeds the overload limit, an alarm will sound, and the rigging system will be shut down.
  • Record load data. Load data can be recorded and used to track the weight of loads over time. This information can be used to identify trends and patterns that may indicate a need for maintenance or repairs.
  • Secure equipment. The information from force and weight sensors is critical when lifting and securing equipment, such as appartus used in the entertainment sector, from arial arts rigging to stage set-up.

Rigging engineers use load pins, load shackles, and tension links in a variety of applications to measure and monitor loads, weight and tensions in different lifting and rigging operations.

  • Crane and Hoist Monitoring: Load pins, load shackles, and tension links are commonly used in cranes and hoists to measure the load being lifted. These devices can be integrated into the lifting mechanism to provide real-time load monitoring, ensuring that the load remains within safe working limits. Application examples: Gantry Crane Weighing and Crane Force Regulation App Note
  • Heavy Lifting and Rigging: Load measurement technologies are used in heavy lifting and rigging operations to measure the tension in cables, ropes, and other lifting components. By monitoring the tension, rigging engineers can ensure that the load is evenly distributed, and that the lifting equipment is not overloaded. Application examples: Lifting Heavy Objects and Aircraft Lifting Equipment
  • Load Testing: Sensors are utilized in load testing scenarios to assess the strength and performance of lifting equipment, such as cranes, hoists, and winches. These devices provide accurate load measurements during the testing process, helping engineers determine if the equipment meets the required safety standards. Application examples: Rescue Helicopter Hoist Test and Harness Durability Testing
  • Offshore and Marine Applications: Due to the ruggedized designs of Interface load pins, load shackles, and tension links, we see extensive use in offshore and maritime operations. They are employed in various lifting and mooring applications, including lifting heavy equipment onto offshore platforms, measuring tension in mooring lines, and monitoring loads on anchor systems. Application examples: Mooring Line Tension Testing App Note and Maritime Measurement Solutions for Onshore and Submersible Applications
  • Infrastructure and Civil Engineering Projects: Load cells, load pins, load shackles, and tension links are actively used in construction and civil engineering projects for load monitoring purposes. They can be used in applications such as measuring loads on temporary structures, monitoring tension in cables and suspension systems, and ensuring safe load distribution during construction operations. Application examples: Power Line Tension Testing and Monitoring the Seismic Force of a Suspension Bridge

In all these applications, rigging engineers are using crucial data about loads, tensions, and forces, to ensure safety, optimize performance, and prevent equipment failures.

Load cells and measurement solutions can help to prevent overloading of rigging systems, which can lead to accidents and injuries. Accurate sensors help to improve the efficiency of rigging operations by providing real-time weight data. This information can be used to adjust the rigging system as needed, which can help to reduce the amount of time and effort required to lift and transport heavy loads.

Learn more about Interface’s Lifting Solutions and Weighing Solutions for Rigging Engineers with these resources:

Aerial Arts Rig

Theater Rigging System

WTS Yacht Rigging Inspection App Note

Bridge Construction Wind Monitoring

Aircraft Engine Hoist

Innovative Interface Lifting Solutions

Aerial Lift Overload Control

Weighing: Gantry Crane Weighing

A Promising Future in Measurement and Analysis Using Multi-Axis Sensors

By combining the measurements from multiple axes, multi-axis sensors provide a better assessment of an object’s motion or orientation in three-dimensional space. Measuring the changes in resistance or output voltage from the sensing elements along multiple axes, multi-axis load cells can accurately determine the forces acting on them. The combination of the signals from different axes provides a comprehensive understanding of the force distribution, enabling engineers to analyze and optimize designs, evaluate structural integrity, and ensure safe and efficient operation in various applications.

Multi-axis load cells have significant advantages and provide valuable benefits in testing labs. The top reason to use multi-axis sensors is to get more measurement data. The data provided when using a 2, 3 or 6-Axis load cell is used in various applications, including robotics, space projects, virtual reality, motion tracking, navigation systems, and innovative consumer products.

Engineers and product designers prefer multi-axis load cells for several reasons. Multi-axis load cells enable engineers and designers to capture forces along multiple directions simultaneously. This capability is particularly beneficial when dealing with complex and multidirectional forces, which are common in real-world applications. By obtaining a complete understanding of how forces act on a structure or product, engineers can design more robust and optimized solutions.

The Promises of Multi-Axis Sensors

  • Comprehensive force measurement and better data analysis: Multi-axis load cells enable precise measurement of forces in multiple directions simultaneously. Multi-axis load cells provide richer and more comprehensive data for analysis. The data is valuable for evaluating structural integrity, load distribution, and performance characteristics of a design.
  • Compact size with robust capabilities: Smaller sensors with digital outputs are easier and less expensive to permanently install into their machines. Size impacts the install, testing and monitoring. Multi-axis sensors are best embedded into products for a real-world application that needs the data, while reducing the number of single load cells and overall size of a product.
  • Increased accuracy and reliability: Multi-axis sensors track performance and reliability better than traditional sensors with more measurements in more directions, enhancing the accuracy and reliability of test results. They provide a more complete understanding of how forces are distributed and interact within a structure, helping researchers and engineers make informed decisions based on reliable data.
  • Wide range of applications: Multi-axis sensors are needed to keep up with modern technologies and application requirements. Multi-axis load cells are used in various testing scenarios, including materials testing, structural testing, product development, and quality control. They are used in industries such as aerospace, automotive, manufacturing, civil engineering, and more. As technology advances and testing requirements become more sophisticated, the demand for multi-axis load cells is likely to grow.
  • Efficiency and cost-effectiveness: A single multi-axis load cell can replace multiple sensors. This consolidation simplifies the testing setup, reduces complexity, and lowers costs. Multi-axis sensors maximize return on investment for testing devices.
  • Enhanced testing capabilities: Multi-axis load cells enable more advanced testing procedures. Digitized sensor information allows for remote monitoring increased analytics, easy access and data collection. This expands the range of tests that can be performed and provides more comprehensive data for analysis and evaluation.
  • Saving space in testing: Using a single multi-axis load cell saves physical space in the testing. This is particularly important in situations where space limited or when performing tests in confined environments. By reducing the footprint of the load cell setup, engineers and designers can optimize the use of their workspace.
  • Simplifying set-up: Using a single multi-axis load cell simplifies the testing setup compared to using multiple single-axis load cells. It reduces the number of sensors, cables, and connections required, leading to a streamlined testing process. This simplicity improves efficiency, saves time, and reduces the chances of errors associated with multiple sensors and connections.

Interface Multi-Axis Sensor Models

2-AXIS LOAD CELLS: Interface’s 2-Axis Load Cells measure any two forces or torques simultaneously, have minimal crosstalk, are standard off-the-shelf and are high accuracy sensors.

3-AXIS LOAD CELLS: Interface’s 3-axis load cell measures force simultaneously in three mutually perpendicular axes: X, Y, and Z – tension and compression. Options include:

6-AXIS LOAD CELLS: Interface’s 6-Axis Load Cell measures force simultaneously in three mutually perpendicular axes and three simultaneous torques about those same axes. Six full bridges provide mV/V output on six independent channels. A 36-term coefficient matrix is included for calculating the load and torque values in each axis. In the end, they provide more data, accuracy, are very stiff and cost-effective for a wide range of testing options.

Interface continues to add to our product line of advanced multi-axis sensors. Read New Interface Multi-Axis Load Cells to see our latest model additions.

The future of multi-axis is evolving in versatility for various system level health monitoring for products and components. Data is valuable now and in the future. These sensors enable test engineers to collect more data now for future analysis. For example, an automotive electronics manufacturer could limit recall to only parts that match extremely specific build criteria based on the detailed sensor data that is captured and stored during product evaluations and testing.

The outlook for multi-axis load cells is promising. Their ability to provide comprehensive force measurement, improve efficiency, and enhance testing capabilities makes them a valuable tool for researchers, engineers, and quality assurance professionals. With ongoing advancements in sensor technology and increasing demand for precise and reliable testing, multi-axis load cells are expected to play a crucial role in the future of testing labs.

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