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    Volume 44, Issue 6 (November 2016)

    Experimental Estimation of J Resistance Curves From Load-CMOD Record for FFCT Specimens

    (Received 17 April 2014; accepted 24 August 2015)

    Published Online: 2016

    CODEN: JTEVAB

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    Abstract

    Fracture toughness of ductile materials is often characterized by J resistance curves. It is generally required to adopt load line crack mouth opening displacement (CMOD) records in load line compact tension (LLCT) specimens to calculate the J integral according to ASTM E1820-13e1. However, in some cases, for example in nuclear engineering, due to material size limitations, a standard test specimen size is not achievable, and attaching or mounting the displacement transducer to measure the load line CMOD (LLD) of a smaller compact tension specimen is very challenging, and an alternative approach is required. The present study is aimed at evaluating the use of front face CMOD (FFD) records in front face compact tension (FFCT) specimens to estimate J resistance curves. Results are compared with those using LLD-based J calculations for P92 steel. It is shown that J resistance curves determined from the two approaches are in good agreement.


    Author Information:

    Shi, Kaikai
    Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Engineering, Southwest Jiaotong Univ., Chengdu,

    Cai, Lixun
    Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Engineering, Southwest Jiaotong Univ., Chengdu,

    Hu, Yunming
    MTS System Corporation, Eden Prairie, MN

    Salmon, David
    MTS System Corporation, Eden Prairie, MN

    Bao, Chen
    Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Engineering, Southwest Jiaotong Univ., Chengdu,


    Stock #: JTE20140173

    ISSN:0090-3973

    DOI: 10.1520/JTE20140173

    Author
    Title Experimental Estimation of J Resistance Curves From Load-CMOD Record for FFCT Specimens
    Symposium ,
    Committee E08