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Strain Gage

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Strain Gage

A strain gage is a simple measuring system that determines the amount of strain, which is the displacement and deformation that results from an object under stress. It measures mechanical quantities by converting tension, force and pressure into an electrical signal. Strain gages have another spelling that is commonly known; strain gauges. This loadcell sensor type may vary in construction and measurement method.

The most popular type is foil that is adhered to the object. Other kinds include semi-conductor, bonded metallic wire and carbon resistive. When measuring the strain of an object, the temperature, material properties, the type of adhesive that bonds the gage to the object’s surface and the stability of the metal all affect the resistance. Strain gages are used to detect cracking in machinery parts, as crack propagation, as an extensometer, to measure temperature, to measure residual stress, to gage shear modulus and as a transducer.

Strain Gage A strain gage is a simple measuring system that determines the amount of strain, which is the displacement and deformation that results from an object under stress. It measures mechanical quantities by converting tension, force and pressure into an electrical signal.
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Leading Manufacturers

West Conshohocken, PA  |  610-825-3310

Our load cells are manufactured with the highest attention to detail at all stages. Whether it is through the design stage, engineering stage, or through hundreds of tests run daily, we ensure that our products outshine all competitor products.

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Strainsert Company $$$

Apex, NC  |  919-772-0115

We supply Multi-Axis Force/Torque Sensors. Our F/T Sensors measure all six components of force and torque. ATI F/T transducers use silicon strain gauges for low-noise and high overload protection.

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ATI Industrial Automation, Inc. $$$

Columbus, OH  |  614-850-5000

Honeywell offers one of the most comprehensive selection of tension, compression and universal measurement load cells available on the market today, in all sizes from miniature to extra large. Available in carbon steel and stainless steel, our load cells are designed for high accuracy, even under extreme testing conditions that may affect measurements. Our load cells can be customized to meet your needs – contact us to discuss your application.

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Honeywell Test and Measurement $$$

York, PA  |  717-843-0081

Morehouse is an experienced leader in force and torque measurement helping to create a safer world. We use our knowledge to provide solutions including accurate measurement data and data analysis software. The goal is to help customers make better measurements which can make the difference between success or failure of everyday technology. We offer ISO/IEC 17025 accredited calibrations accurate to 0.002 percent of applied force up to 120,000 lbf and 0.01 percent up to 2,250,000 lbf.

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Morehouse Instrument Company, Inc. $$$

Cincinnati, OH  |  513-874-7326

At TyTek Industries we manufacture load cells to suit all capabilities. Our expertise has provided insight and load cell solutions for a range of customers and industries. Our engineering team’s philosophy ensures we do everything humanly and technologically possible to match your requirements with quality, cost and delivery. We’re here to help you carry the load.

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TyTek Industries $$$

Kent, WA  |  800-237-0022

Stress-Tek, Incorporated designs and manufactures custom and high volume weighing, measurement and deflection sensing devices. The result is an extensive line of high-quality load cells. Stress-Tek designs and manufactures two-wire electronics to integrate with its products to provide complete solutions that are guaranteed to meet your exact requirements. Contact Stress-Tek today!

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Stress-Tek, Inc. $$$
placeholder image Strainsert Company ATI Industrial Automation, Inc. Honeywell Test and Measurement Morehouse Instrument Company, Inc. TyTek Industries Stress-Tek, Inc.

It is a vital part of a load cell, which is a measuring device concerned with identifying compression, tension and shear. Another product that does the same thing and also makes use of strain gages is the force transducer, which is like a load cell except a more complicated system that is able to do the same thing plus measure a couple other aspects of an object as well. Industries that utilize such applications include construction companies, industrial manufacturers, automotive, aerospace and robotics.

There are three main types of strains that are measured by strain gages. Poisson strain is the thinning and elongation that occurs when a bar is strained. Bending strain is determined by measuring the relationship between the force and the amount of bending, which results from a twisting action. Shearing strain occurs when stress causes angular distortion of the object being measured.

The most common type of strain gage, made of foil and adhesive, has an insulating and flexible backing, which supports the metallic foil pattern. It is attached to an object by adhesives. As the object deforms, so does the flexible foil. The electrical resistance thus changes, and is measured. When a strain gage is working as part of another system, like the load cells and force transducers mentioned above, multiple strain gages are used, connected by circuits. The formation of the strain gages is called the Wheatstone bridge equation, which was developed in the early eighteen hundreds.

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