tensometer การใช้

A tensometer can be either electronic or manual, the latter being with a handle to apply force.
The measurements taken are load and extension and a tensometer gives directly the load extension curve, and not the stress-strain curve.
A "'tensometer "'is a device used to evaluate the tensile properties of materials such as their Young's modulus ( i . e . the degree to which they stretch under stress ) and tensile strength.
Typically, the testing involves taking a small sample with a fixed cross-sectional area, and then pulling it with a tensometer at a constant strain ( change in gauge length divided by initial gauge length ) rate until the sample breaks.
In the vast majority of practical applications, however, the preconditions for using the theoretically derived coefficients are not met, e . g ., the integral deformation over the tensometer area is not included, the hole is blind instead of through, etc . Therefore, coefficients taking into account the practical aspects of measuring are used.