Interfaces: The Next NDE Challenge

  • H. N. G. Wadley

Abstract

Nondestructive evaluation, as practiced in the 1960’s, attempted to detect (but was often unable to characterize) the existence of defects in engineering structures. Qualitative criteria were used in the assessment of defect significance and the determination of accept/reject decisions. Advances in elasto-plastic fracture mechanics during the 1970’s focused attention upon the defect size and orientation- if these could be measured, then fracture mechanics was capable of quantitative structural integrity evaluation. The papers presented in this conference series during the 1980’s trace the considerable advances of quantitative nondestructive evaluation in satisfying this measurement need. Nowadays, for monolithic materials with well defined fracture toughness, the overconservative rejection criteria of the past are beginning to be replaced by “retirement for cause” concepts.

Keywords

Titanium Magnesium Cobalt Boron Brittle 

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Copyright information

© Plenum Press, New York 1988

Authors and Affiliations

  • H. N. G. Wadley
    • 1
  1. 1.Institute for Materials Science and EngineeringNational Bureau of StandardsGaithersburgUSA

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