Replica-based crack inspection |
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| Authors: | John A Newman Scott A Willard Robert S Piascik |
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| Affiliation: | a NASA Langley Research Center, MS 188E, Hampton, VA 23681, United States
b Lockheed Martin Space Operations, Langley Research Center, MS 188E, Hampton, VA 23681, United States |
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| Abstract: | Surface replication has been proposed as a method for crack detection in space-shuttle main engine flowliner slots. The results of a feasibility study show that examination of surface replicas with a scanning electron microscope can result in the detection of cracks as small as 0.005 inch, and surface flaws as small as 0.001 inch, for the flowliner material. |
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| Keywords: | Surface replica Crack inspection Small crack Inconel 718 |
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