China Plastics ›› 2022, Vol. 36 ›› Issue (9): 148-159.DOI: 10.19491/j.issn.1001-9278.2022.09.020

• Standard and Test • Previous Articles     Next Articles

Research progress in evaluation of slow crack growth resistance of polyethylene pipes based on strain hardening modulus

LI Yan1,2,3(), TANG Xiaoxu1,2,3, ZHANG Weijie1,2,3, HUANG Ruipeng1,2,3, ZHANG Shan1,2,3   

  1. 1.China Academy of Building Research,Beijing 100013,China
    2.CABR Testing Center Co,Ltd,Beijing 100013,China
    3.National Engineering Research Center of Building Technology,Beijing 100013,China
  • Received:2022-05-19 Online:2022-09-26 Published:2022-09-26


In this paper, the three failure modes of pipes were summarized and the molecular mechanism and fracture mechanics mechanism of slow crack growth were briefly described. The principle and test process of the strain hardening modulus (SH) method were introduced in detail. The paper also reviewed the research progress in the correlation of material microstructures, the domestic and foreign reliability research of SH method for the evaluation of the slow crack growth resistance of pipes, and the application of SH method for the evaluation of the environmental stress cracking resistance of materials. Finally, the applications of SH method for the control of outlook on product quality was discussed.

Key words: strain hardening modulus, slow crack growth resistance, polyethylene, pipe

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