International Standards Dynstat Bending Test:
DIN 53 435
The Dynstat-Bending Test is a test method for determining the bending properties of plastics under a 4-point bending load. A Dynstat specimen is clamped in a bending device consisting of 2 support devices and loaded at a constant rotational speed until it breaks or the specified maximum bending angle is reached. The stress generated in this process is determined and is considered a measure of strength or toughness under quasi-static test conditions.
Due to the small size of the Dynstat specimens, this method is preferably used in finished part testing.
This characteristic value is used for quality control and comparison of plastics with each other. When making comparisons, care must be taken to ensure that the dimensions, pretreatment and test conditions are consistent. In addition, the influence of production-related microstructural differences in the finished part on the measurement results must be taken into account during sampling to ensure comparability of the results.