1335 Accumulated Damage

In some applications of monolithic materials, there is a need to assess the total accumulated damage as opposed to localization of individual or discrete fracture-causing flaws. Determination of accumulated damage is desired because mechanical properties are effected, and thus, if a correlation can be established between NDE data and a mechanical property, for example, strength, then reuse/replace

FIGURE 13.17 Enlarged view of "C" crack detection of test sample of Fig. 13.16: (a) surface, (b) subsurface. Line drawn in superposition shows position of surface-breaking crack. (c) Shows a diagram of subsurface crack types.
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