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Long-Term Measurement of Local Creep Deformation by Optical Fiber Marking and Remote Monitoring
Tu, Shan-Tung
Professor and associate professors, Nanjing University of Chemical Technology,

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

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

He, Xiao-Yuan
Professor, Southeast University,

Pages: 9    Published: Jan 2001

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Source: STP1323-EB

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

Paper ID: STP42148S
Committee/Subcommittee: E08.05
DOI: 10.1520/STP42148S
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