Universal testing machines (UTMs) are essential for material qualification, structural research, and quality assurance. Interface load cells sit directly in series with the moving crosshead and the upper specimen grip of a UTM. A machine controller reads the load cell continuously within a closed feedback loop to regulate crosshead travel, maintain constant loading rates, or hold targeted force thresholds during stress relaxation evaluations. The transducer measures the specimen resistance as it deforms. The data acquisition system pairs this instantaneous force data with displacement data to measure elasticity, yield point, and ultimate tensile strength.

Interface's Elasticity 101 details the importance of Hooke's Law of Physics. In a load cell, we want a material with a very predictable stiffness. If the material permanently deforms or creeps, the deformation value won't return to zero, and your measurements will be inaccurate. A load cell is essentially a mechanical transducer that converts mechanical force into elastic potential energy, which we then capture as data. Understanding how your sensor bends is the first step toward mastering precision force measurement. Learn more in Interface's ForceEDU 101 Series.

Interface connectors are the critical link that physically and electrically connects a sensor's cable end to a corresponding receptacle on the instrumentation device. When selecting a cable for your test and measurement application, always consider the connector type at both ends to ensure compatibility and optimal performance. Use Interface guides to make the right connection between your load cell and data acquisition system.