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Monitoring the Evolution of Crazing Damage in an Area under Stress Concentration via Acoustic Emission

  • Guodong Gao
  • Yongming Xing
Regular Paper

Abstract

In this study, we designed a special stress concentration specimen. We studied the stress, strain, craze density, and the change trend in the rate of acoustic emission events in the area with the most intense craze damage. We also examined the evolution of crazing damage under continuous loading. We determined the one-to-one correspondence between crazing and the degree of triaxial stress, and used the finite element method to validate this correspondence. In addition, we analyzed the viscoelasticity area of the specimen and proposed the fracture criteria for crazes and microcracks.

Keywords

Craze Stress Strain Acoustic emission Load 

Nomenclature

ε

strain

σ

stress

K1

stress intensity factor

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Copyright information

© Korean Society for Precision Engineering and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of MechanicsInner Mongolia University of TechnologyHohhot, Inner Mongolia Autonomous RegionChina

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