Testing Equipment for Characterizing Environmental Stress Cracking Resistance Based on the Modified Bell Testing Method
The Bell test method has been modified through designing automatic notching device and bending device.By doing so the quality of the notch has been improved significantly and the variation of the testing results has been reduced.The modified test method has been applied to investigate the ESC behavior of high density polyethylene.The results show that the failure time is affected by the solvent concentration,notch offset distance,notch inclination angle and blade thickness.Furthermore,it is observed that the crack initiation occurs neither in the middle position nor at the edge of the notch,but at a position about 6.38 mm from the edge of the notch.
Bell test methodenvironmental stress cracking(ESC)testing device
万方数据
维普
