Experimental Stress Separation Technique Using Thermoelasticity and Photoelasticity and Its Application to Fracture Mechanics

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Abstract

This paper describes an experimental study on full-field stress separation from thermoelasticity and photoelasticity measurements and its application to estimation of stress intensity factor and the <i>J</i>-integral. Thermoelastic stress analysis (TSA) and photoelastic stress analysis (PSA) have been developed as full-field visualization methods of stress distribution. Only the sum of the principal stresses can be measured by TSA, while only the difference of the principal stresses can be measured by PSA. In this study, the hybrid stress separation measurement technique developed by the present authors using both of these methods was applied for determining distribution of all individual stress components in a center-cracked plate subjected to mechanical load. Stress intensity factor and the <i>J</i>-integral were calculated from the obtained stress distribution. In addition to the conventional calculation method, near-tip exclusive domain integral method was proposed, in which the <i>J</i>-integral was evaluated without using degraded experimental stress distribution data near the crack tip. It was found that these fracture mechanics parameters can be evaluated with good accuracies by the present technique.

Journal

  • JSME International Journal Series A

    JSME International Journal Series A 47(3), 298-304, 2004-07-01

    The Japan Society of Mechanical Engineers

References:  9

Cited by:  3

Codes

  • NII Article ID (NAID)
    110004820489
  • NII NACSIS-CAT ID (NCID)
    AA11179396
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    13447912
  • NDL Article ID
    7006151
  • NDL Source Classification
    ZN11(科学技術--機械工学・工業)
  • NDL Call No.
    Z53-E315
  • Data Source
    CJP  CJPref  NDL  NII-ELS  J-STAGE 
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