Strain gauge definition

A strain gauge is a device used to measure strain on an object. The gauge is attached to the object by a suitable adhesive, such as . When external forces are applied to a stationary object, stress and strain are the result. Strain gauge definition , Geology.

Thus strain gauges can be used to measure force and related parameters like displacement and stress. The input and output relationship of the strain gauges can be expressed by the term gauge factor or gauge gradient, which is defined as the change in resistance R for the given value of applied strain ε.

Meaning, pronunciation, translations and examples. English dictionary definition of strain gauge. In addition to the characteristics of the different strain gage configurations, you must consider the required hardware to properly condition and acquire. Resistance strain gauge : The resistance strain gauge is a valuable tool in the field of experimental stress analysis. Such a device is called a strain gauge.

Aircraft component testing is one area of application, tiny strain - gauge strips glued to structural members, linkages, and any other critical . Need even more definitions ? Merriam-Webster unabridged . Definition of strain gauge - a device for indicating the strain of a material or structure at the point of attachment.

More specifically, strain (ε) is defined as the fractional change in length, as shown in Figure below. In Figure 1B and 1C, opposing forces are applied to each end of a rod with an original length of Lo. The applied forces will cause the rod to deform so that. Lf is the length of the rod. This kind of change is called plastic deformation.

Note that the proper meaning of plastic is something that changes shape relatively easily. Using strain gauges on a prototype airplane wing. Under longitudinal stress the bar will change length ΔL. L can be negative or positive, depending on whether the bar is. Find out more about our strain gauge load Cells, sensors and transducers.

The strain gauge is one of the most important materials in weighing technology. The article explains how an optical strain gauge works and the differences between optical and electrical strain gauges. Aerodynamicists use wind tunnels to test models of proposed aircraft and engine components.

During a test, the model is placed in the test section of the tunnel and air is made to flow past the model. Various types of tests can be run in a wind tunnel. Some tests are performed to directly measure the aerodynamic forces and. If a metal piece is subjected to a tensile . Frequently asked questions concerning strain gauges.

F- (-1) This definition corresponds to that for strain sensitivity.

These gauges are used for measurement of tensile strain of bolt. They are simply inserted into pre-drilled hole in the bolt with exclusive adhesives. This method is recommendable when an ordinary strain gauges can not be mounted on the bolt surface. When an external force is applied on an object, due to which there is a deformation occurs in the shape of the object.

This deformation in the shape is both compressive or tensile is called strain, and it is measured by the strain gauge. This series of posts will cover the fundamental principles of strain gauges , and provide a brief introduction of how they work and how they can be used. Measuring strain is a very basic necessity for a wide range of engineering applications, and whilst there are many methods for doing so, the strain gauge is. Figure 2: For complicated strain fields, a planar approach can be used. Gage length is an important consideration in strain gage selection, and is usually the first parameter to be defined.

Dimensions listed for gage length (as measured inside the grid endloops).