Is experimental data engineering stress vs true stress

Different materials require different fixturing to properly hold them. There are many types of grips and fixtures available for tension testing. Indicators capture and display the test data but do not control the machine. In some situations, an indicator may be all that is required. Controllers, as the name implies, control how the test frame behaves during testing, including test speed and displacement. For example, a 1,000 lb load cell would be far too high a capacity for a sample that breaks under 1 lb of force.Дepending on your system setup, you may need a controller or an indicator. Conversely, a load cell with too high a capacity will lead to test results that may lack the precision desired as resolution of load cells typically goes down to 1%.

Choosing a load cell with a capacity below the required breaking strength will result in the load cell breaking before the sample does. Like frames, these come in a variety of capacities. Load cells measure the amount of force being applied to the sample. It is important to select a frame which can withstand the amount of force needed to test the sample. The universal test machine frame provides the structure and rigidity needed to pull the sample apart at the desired rate.В Frames are available in both electromechanical and servo-hydraulic configurationsВ with a wide range of capacities. Proper grips and fixturing to hold your sample.Generally speaking, to perform tension testing, you will need the following equipment:

Is experimental data engineering stress vs true stress