Continuous crack length measurement with a carbon powder-polymer compositeThe potential application of carbon-powder impregnated polymeric gages to the measurement of crack extensions is investigated by determining whether crack lengths in Al can be inferred from resistance changes sensed by the gages. It is found that the gages can be effectively used for measuring crack extensions with a maximum error of around 12 percent. Thinner gages provide more accurate results, and the sensitivity of the device can be improved by optimizing the shape.
Document ID
19910067294
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Prabhakaran, R. (Old Dominion University Norfolk, VA, United States)
Lopez, O. F. (NASA Langley Research Center Hampton, VA, United States)