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AIP Conference Proceedings
Fourier-transform infrared photoacoustic spectroscopy has been applied to carbonfiber composites to test whether bulk physical properties of the composites could be determined using the near-surface-sensitive photoacoustic approach. Both the cure levels of carbon fiber/cyanate ester composites and the interlaminar shear strengths of artificially aged carbon fiber/epoxy composites were successfully measured. Standard errors of cross validation were 3.46% cure for a sample set ranging from 8% to 95% cured and 1.60 MPa for aged samples with strengths ranging from 22 to 77 MPa.
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Jones, Roger W.; Sweterlitsch, Jeffrey J.; Wagner, Anthony J.; McClelland, John F.; Hsu, David K.; Polis, Daniel L.; and Sovinski, Marjorie F., "FTIR Photoacoustic Spectroscopy Applied to the Curing and Aging of Composites" (2005). Ames Laboratory Publications. 230.