ForceLeaders Summit Houston

Interface ForceLeaders Summit 2024 in Houston, Texas, happens May 9, 2024. Interface and T&M force measurement solution engineers and experts will share valuable tips and experiences using load cells, torque transducers, multi-axis sensors, and advanced instrumentation. Whether you are lab technician in the oil and gas industry or a product designer of robotics, we’ll have something for you. We’ll highlight sensor solutions for all industries. Register to join the technical conversation. Seating is limited.

Powering Up Precision Machine Building and Automation Webinar

Interface’s new webinar explores the world of load cells, torque transducers, multi-axis sensors, wireless technologies, and instrumentation used in machine building and automation. Get engineering tips on the latest advancements in sensor technology, including miniaturization, wireless integration, and the rise of the Industrial Internet of Things (IIoT). Join us to explore building smarter, more responsive machines.

Load Cells for Adhesive and Bonding Shear Testing

Thousands of adhesives and bonding agents are used to assemble parts and final goods. In addition to their bonding characteristics, they may be required to have a certain elasticity, resistance to chemicals, electrical conductivity, temperature coefficient, or other controlled parameters.

A shear testing machine uses a load cell to measure the shear strength of bonds and adhesives. A load cell transforms bond and adhesive tests from a subjective evaluation of adhesion strength into a precise and objective measurement tool. This allows various industries to make data-driven decisions regarding adhesive selection, formulation optimization, and quality control.

Specifically, adhesive or bonding shear force testing is used to evaluate the strength of a joint formed by an adhesive between two materials. It measures the force required to separate the bonded materials by a sliding motion parallel to the adhesive joint instead of pulling them directly apart to measure tensile strength or peeling them from one another, which defines the peel strength.

Benefits of Using Load Cells for Adhesive and Bonding Shear Force Testing

  • Material Characterization: Shear testing data helps characterize the shear properties of adhesives and the materials they bond. This information is valuable for selecting appropriate adhesives for specific applications and predicting their performance under stress. Read more in Interface Solutions for Material Testing Engineers.
  • Improved Design and Development: The data from shear testing informs researchers, product designers, product development teams, and engineering of new adhesives and bonded products. By understanding how different materials and adhesives perform under shear stress, engineers can optimize designs for better performance and durability.
  • Failure Detection: Product manufacturers can identify the bond’s failure mode by analyzing the force data. Did the adhesive itself fail? Did the bonded materials detach during the test? When did the failure occur? This quantifiable information helps understand the weak points and prepare improvements before assembly and product release.
  • Quality Control: Manufacturers must validate consistent bond strength across production batches. By performing standardized shear tests with a load cell, the data helps maintain product quality and prevent potential production, distribution, and use failures.

What is Peel Strength Testing?

The peel test is common for adhesives, adhesive-coated tapes, and paints. The test parameters are usually detailed in a government or industry specification, and the pull rate is often closely controlled. Adhesive-backed tapes are tested this way.

Many industries rely on standardized peel test methods for quality control. Load cells are used for reliable peel testing and quality assurance analysis. The load cell data can be captured electronically, allowing you to analyze the force variations throughout the peeling process, not just the peak force. This can reveal aspects like initial adhesion strength or how the force changes as the peel progresses.

During a peel test, you need a way to measure the force required to precisely separate two bonded materials. Unlike a simple hand pull, a load cell quantifies the peeling force. This allows you to analyze the results numerically and compare them to specifications or between different samples. This is an important step in R&D for all parts, components, and final products.

Building a Shear Testing Machine

The design of a shear tester is relatively straightforward if the following conditions are met:

  • The line of action of the primary axis of the load cell should be aligned with the contact point on the test sample to minimize moment loads on the load cell.
  • The linear bearing motion should be carefully adjusted to run exactly parallel with the primary axis of the load cell to avoid a side load into the load cell.
  • The load cell’s capacity should be at least twice the expected maximum load to be applied during a test cycle to provide enough extra capacity to protect the cell when a sudden failure of the test sample impacts it.
  • The linear drive should have a wide range of controlled speeds and a high-resolution displacement measuring capability, including an
  • Usan an automatic adjustable stop with fast braking to protect the load cell from damage. The usual system is a stepper motor drive with precision high-ratio reduction gear.

For additional information about shear testing, an illustration of the shear testing machine, and peel tests, please use the Interface Load Cell Field Guide.

If you have questions about choosing the right load cell for your machine or test, consult with our application engineers. You can also reference our easy-to-use Load Cell Selection Guide.


Why Machine and Equipment Manufacturers Choose Interface

Load Cells Built for Stress Testing

Force Measurement Testing Improves Products and Consumer Safety

Force Measurement is Fundamental in Material Testing

The Basics of Shear and Bending Beams

Exploring New Measurement Products Webinar

The Interface Exploring Capabilities of New Measurement Products Webinar details new products, including sensors, instrumentation, and accessories. Our experts will cover dozens of new additions to the extensive 40,000-plus product catalog of force measurement solutions. Interface engineers highlight product features, capacities, use cases, and technical tips in the fast-paced new technical online seminar.

Interface 2023 Top Products and Trends

As engineers, we demand complex data and proven performance, especially regarding the tools we trust with our test and measurement projects. That’s why Interface crunched the numbers on our extensive 35,000+ product catalog, analyzing real-world usage and online preferences to reveal the 2023 top force measurement products.

Whether you’re tackling demanding aerospace wind tunnel tests, optimizing robotic grips for industrial automation use in the factory, or innovating in medical device design that will save lives, there are options for precision measurement. This list provides a data-driven roadmap to the Interface products fellow measurement device seekers created through their product reviews and acquisition. We highlighted some of these trends and use cases in our recent post: Top 10 Trends in Test and Measurement.

Let’s delve into the real-world data and discover the Interface measurement tools that testing professionals, technicians, buyers, and engineers like you relied on in 2023.




The most viewed products provide Interface product design and planning teams with insights about future projects. Whether you are designing a new consumer product that provides IoT sensing capabilities with an embedded Mini Load Cell or updating your test lab with multi-axis sensors, Interface learns from your interactions.

So, how did all of this translate to products we built this year? Interface customers selected these most popular load cells, torque transducers, and instrumentation for various applications and use cases, including OEM solutions.


Interface force measurement solutions proved a cornerstone of success, aiding in developing and testing countless innovative products. But with thousands of options in our catalog, pinpointing the most impactful measurement tools can be daunting. We can relate, so we designed a series of Interface Guides to help you navigate options based on your technical requirements and product specifications. Use these guides to start your research, then engage with our experienced application engineers to refine your options and get the right product for your specific needs.


Load Cell Selection Guide

Torque Transducer Selection Guide

Instrumentation Selection Guide

Data AQ Pack Guide

Multi-Axis Sensor Selection Guide

Lifting Solutions Guide

Weighing Solutions Guide

We are ready to help dissect the specific features, capacities, and application requirements with you to conquer your force measurement complexities confidently. We look forward to supplying you with sensor technologies in 2024.

Building Synergy to Accurately Measure OEM Products and Components

Interface thrives on deep collaboration with OEM partners. We control the entire process, from meticulous sensor design to robust packaging, but our true strength lies in the synergy we create with our customers.

Interface’s value to original equipment manufacturers is the diversity of custom-engineered single measurement devices and sensors easily integrated into components or products. Interface OEM Solutions refer to high-volume products manufactured as unique sensors to use in existing hardware, to activate a product, or as a stand-alone measurement component.

We provide various strain-gaged products, engineering services, and design capabilities to support manufacturers with custom solutions that fit their precise requirements.

When is an Interface OEM solution necessary for your product or component?

#1 Accurate Measurement: Interface load cells and transducers allow OEMs to monitor and measure real-time forces applied to their parts and products. The measurement data is crucial for performance monitoring and ensuring components and systems operate within safe and optimal load ranges.

#2 Data Acquisition and Analytics: Interface sensor technologies provide valuable product usage and performance insights. Product designers benefit by understanding user behavior and informing future product development decisions. This data can also be used for predictive maintenance.

#3 Design Optimization: Analyzing real-time force data helps engineers optimize part and product designs. Understanding how forces are distributed and interact within a system helps reduce material usage and component weight without compromising strength. Product engineers must also identify and eliminate stress points to improve durability and longevity.

#4 Safety and Reliability: Monitoring forces enables proactive safety measures, preventing accidents and equipment failures. The sensor data is valuable in preventing damage by stopping operations or triggering alarms when excessive forces are detected during use.

#5 Product and Component Quality Control: Using embedded sensor technologies is important when guaranteeing consistent force-related performance during use.

OEM Solution Definition

Speed meets precision with Interface’s complete control over sensor design. From precision strain gages to stocking and shipping parts, we own every step – allowing us to iterate and tailor our sensors to your needs rapidly. Our dedicated engineers work with OEM partners to seamlessly integrate specific requirements into every sensor, delivering solutions as unique as your vision.

OEM solution development is a collaborative process that will leverage our expertise.  Before we define a measurement solution for your specific OEM requirements, Interface engineers and application experts start with a detailed solution definition process between the OEM team members. We host a series of system-level discussions that drive maximum design, build, and production efficiency.

Top OEM Solution Discovery Questions

  • What is the #1 challenge or problem you are trying to solve?
  • What are you measuring?
  • Where will the sensor be used or placed?
  • Why are you interested in specific measurements?
  • What signal or connectivity is needed?
  • What are the defined measurement ranges and potential loading conditions?
  • How do you best describe the envelope and mechanical integration?
  • What are the environmental conditions and exposures for the product or component?
  • What are the plans for sensor calibration?
  • Are you using relative or absolute measurements?

The Interface measurement products available for creating a unique SKU only available to an OEM include our load cells, miniature load cells and load buttons, load pins, and torque transducers. OEMs can choose from Interface’s depth of sensor solutions for specific force ranges, directions, mounting configurations, and environments, enabling optimal integration into their designs.


Interface Products Available for Custom OEM Solutions

  • Low and High Capacity LowProfile Load Cells
  • Compression-Only Load Cells
  • Miniature Load Cells
  • S-Type and Beam Load CellsColumn and Rod End Load Cells
  • Load Cell Load Buttons
  • Sealed Load Cells
  • Stainless Steel Load Cells
  • Multi-Axis Sensors
  • Torque Transducers
  • Flange Style Torque Transducers
  • Hex Drive and Square Drive Torque Transducers
  • Load Pins and Load Shackles
  • Load Washers
  • Tension Link Load Cells
  • Instrumentation

For products requiring sensor-based components, use Interface products to measure force, weight, or torque accurately and continuously during use, meet safety requirements and certifications, and ensure product quality.

Get started by sharing your initial requirements with us by going to our OEM solution request or contacting our experts. We are ready to help you with making sensor-enabled products.


Making Products Smarter with Interface OEM Solutions

Interface OEM Solutions Process

OEM Robotic Surgery Force Feedback

OEM Solutions Turning an Active Component into a Sensor

Manufacturing Solutions

Why Product Design Engineers Choose Interface


Wonderful World of Wireless Webinar

Interface Wonderful World of Wireless Webinar explores using wireless sensors, instrumentation, and accessories to cut the cable. Our experts detail wireless load cells, wireless testing equipment, best practices, and tips. Learn about wireless telemetry systems, key considerations, and challenges. Interface engineers highlight industry applications and frequently asked questions in this new technical online seminar.

ForceLeaders Summit Arizona

Interface ForceLeaders Summit 2024 in Arizona happens on Tuesday, January 16, Our force measurement solutions engineers and experts will share valuable tips and experience using load cells, torque transducers, multi-axis sensors, and advanced instrumentation. Register to join the live conversation, ask your questions, and learn from industry professionals. The event takes place at ASU SkySong.

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!