STP1323

    Long-Term Measurement of Local Creep Deformation by Optical Fiber Marking and Remote Monitoring

    Published: Jan 2001


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    Abstract

    Creep deformation localization is a common occurrence generally found at high temperature components, typically in geometrical discontinuities and weldments. As the deformation in a small region can hardly be measured by conventional displacement gauge, a new technique for measuring long-term local creep deformation was developed by quartz optical fiber marking, remote monitoring and image processing. A long-term measurement of the creep deformations of base metal, weld metal and heat-affected zone in cross-weld specimens verifies the new technique.

    Keywords:

    Local deformation, high temperature, quartz optical fiber, image analysis, weld, creep measurement


    Author Information:

    Tu, Shan-Tung
    Professor and associate professors, Nanjing University of Chemical Technology, Nanjing,

    Gong, Jian-Ming
    Professor and associate professors, Nanjing University of Chemical Technology, Nanjing,

    Ling, Xiang
    Professor and associate professors, Nanjing University of Chemical Technology, Nanjing,

    He, Xiao-Yuan
    Professor, Southeast University, Nanjing,


    Paper ID: STP42148S

    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP42148S


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