Electronic universal testing machine purchase test technical guidance

Electronic universal testing machine can do, do stretching, compression, bending, peeling / tearing and other functions.

1 Model selection: First determine the maximum force required to test, the maximum force value below 5KN, generally use a single column electronic tensile testing machine.

More than 5KN to 50KN general use of dual-column desktop electronic universal material testing machine

More than 50KN is the use of floor-type electronic universal testing machine. The rack should be combined with ergonomics in design to ensure safety, reduce operator fatigue and provide the highest level of flexibility.

2 Body speed and height selection: Understand the test space required for the test. The required beam displacement and vertical test space for the test, cross beam displacement 898mm and vertical test space 1067mm are generally sufficient. If it is an elastomer test, the beam displacement and vertical The test space will require a little more. Therefore, there should be an ultra-wide rack or ultra-high rack to meet the needs of different customers.

3 Load sensor selection: whether the load measurement accuracy meets or exceeds the standards of ASTM4, ISO7500/1. The load sensor should also consider: range, accuracy, repeatability, offset loading error, nonlinearity, stable compensation range, temperature zero Drift and Sensitivity. Automatic identification, calibration, and zeroing of the load cell greatly speeds up the testing process and ensures data consistency and accuracy. Also, before starting the test, consider the availability of self-identification to prevent personnel errors. The full range regulator eliminates the manual adjustment of the operator.

4 Choice of strain measurement: Any mechanical system will deform after being stressed, no matter how slight. The same applies to material testing systems. The racks, load cells, and fixtures of your system are not infinitely rigid and will deform slightly when force is applied to the specimen. This deformation is called flexibility and can cause serious errors in the test results, especially in high load tests with small stroke requirements. So all the racks must include a very rugged beam guide in the design, providing the highest The level of beam stiffness, high stiffness load sensors and fixtures, to ensure maximum accuracy of the test results. When required for extremely accurate measurement of specimen deformation, the use of extensometers can completely avoid system flexibility errors.