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ASNT Level III- Visual & Optical Testing

My Level III Self Study Notes Reading 4 Section 4B

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FIGURE 62. Creep damage curve showing the typical relationship of strain to time for a material<br />

under stress in a high temperature atmosphere; note that development of creep related voids in<br />

this alloy occurs early in service life; their eventual linkage is shown schematically on the curve<br />

[see reference 27): fa) isolated cavities, (b) oriented cavities, (c) microcracks and (d)<br />

macrocracks (see Table 14)<br />

http://www.scielo.br/scielo.php?pid=S1516-14392004000100021&script=sci_arttext<br />

Charlie Chong/ Fion Zhang

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