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DENG Cai-yan, ZHANG Yu-feng, HUO Li-xing. Discussion on determination of J-integral and comparison of different test standards[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2006, (10): 23-25,32.
Citation: DENG Cai-yan, ZHANG Yu-feng, HUO Li-xing. Discussion on determination of J-integral and comparison of different test standards[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2006, (10): 23-25,32.
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Discussion on determination of J-integral and comparison of different test standards

  • School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China

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  • Received Date: August 31, 2005
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    • Abstract
  • According to different fracture toughness test standard, J-Resistance curve tests were conducted at-5℃ in welded joints of X56 pipeline steel in the multiple specimen method and the test result were compared.According to the double P-V curves of each weld metal and heat affected zone specimen obtained from the two notch opening displacement the load-line displacement and the value of J were calculated. Finally, the best fited curve was determined the valid data points according to GB2038-91 and BS7448, respectively.The result indicates that BS7448 is superior to GB2038-91 on blunt line, exclusion lines and so on.J-Resistance curves and J0.2 was obtained. But there are no valid data points according to GB2038-91 and no further calculation.
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