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author:

Zhang, Ying (Zhang, Ying.) [1] | Li, Yue (Li, Yue.) [2] | Lai, Huan Sheng (Lai, Huan Sheng.) [3] | Bai, Chunmei (Bai, Chunmei.) [4] | Liu, Kang Lin (Liu, Kang Lin.) [5] (Scholars:刘康林)

Indexed by:

EI Scopus SCIE

Abstract:

Q235 steel is widely used in engineering and construction. Therefore, it is important to identify the damage mechanism and the acoustic emission (AE) response of the material to ensure the safety of structures. In this study, an AE monitor system and an in situ tensile test with an optical microscope were used to investigate the AE response and insight into the damage process of Q235 steel. The surface of the specimen was polished and etched before the test in order to improve the quality of micrographs. Two kinds of AE responses, namely a burst and a continuous signal, were recorded by the AE monitor system during the test. Based on the in situ test, it was observed that the damage of Q235 steel was induced by the crystal slip and the inclusion fracture. Since the crystal slip was an ongoing process, continuous AE signals were produced, while burst AE signals were possibly produced by the inclusion fracture which occurred suddenly with released higher energy. In addition, a great number of AE signals with high amplitude were observed during the yielding stage and then the number and amplitude decreased.

Keyword:

acoustic emission damage in situ tensile test Q235

Community:

  • [ 1 ] [Lai, Huan Sheng]Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China
  • [ 2 ] [Zhang, Ying]Changzhou Univ, Sch Environm & Safety Engn, Changzhou 213164, Peoples R China
  • [ 3 ] [Li, Yue]Northeast Petr Univ, Daqing 163000, Peoples R China
  • [ 4 ] [Bai, Chunmei]Sun Yat Sen Univ, Sch Civil Engn, Zhuhai 519082, Peoples R China
  • [ 5 ] [Liu, Kang Lin]Fuzhou Univ, Sch Chem Engn, Fuzhou 350116, Fujian, Peoples R China

Reprint 's Address:

  • [Lai, Huan Sheng]Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China

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Source :

ARCHIVES OF ACOUSTICS

ISSN: 0137-5075

Year: 2019

Issue: 4

Volume: 44

Page: 807-813

0 . 6 1 8

JCR@2019

0 . 6 0 0

JCR@2023

ESI Discipline: PHYSICS;

ESI HC Threshold:138

JCR Journal Grade:4

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 2

SCOPUS Cited Count: 2

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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