caa a22 4500 465751059 CHVBK 20180323111833.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF02321500 doi (NATIONALLICENCE)springer-10.1007/BF02321500 Application of carbon-powder-polymer composite as a continuous crack-length sensor [Elektronische Daten] [R. Prabhakaran, O. Lopez] This paper explores the application of carbon-powder-impregnated polymeric composites for measuring crack extensions. The strain sensitivity of the gage material is shown to be very small. In the first series of tests, the gage material is characterized by measuring the change in electrical resistance due to machined slits for various gage lengths. The measured response is compared with the response predicted from a very simple electrical model. On the basis of good correlation and repeatability, the usefulness of such gages to measure crack extensions is assessed by a second series of tests. Further work to improve the gage response by optimizing the shape of the gage and making the gage and the adhesive layer thinner is proposed. The presented concept, with improvements, can result in a reliable, inexpensive crack gage requiring inexpensive instrumentation. Society for Experimental Mechanics, Inc., 1990 Prabhakaran R. Department of Mechanical Engineering, Old Dominion University, 23529, Norfolk, VA aut Lopez O. Structural Mechanics Branch, NASA Langley Research Center, 23665, Hampton, VA aut Experimental Mechanics Kluwer Academic Publishers 30/4(1990-12-01), 332-335 0014-4851 30:4<332 1990 30 11340 https://doi.org/10.1007/BF02321500 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02321500 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Prabhakaran R. Department of Mechanical Engineering, Old Dominion University, 23529, Norfolk, VA aut NATIONALLICENCE 700 1- Lopez O. Structural Mechanics Branch, NASA Langley Research Center, 23665, Hampton, VA aut NATIONALLICENCE 773 0- Experimental Mechanics Kluwer Academic Publishers 30/4(1990-12-01), 332-335 0014-4851 30:4<332 1990 30 11340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer