Photoacoustic spectroscopy was used to predict the interlaminar shear strength of a carbon/epoxy composite. Samples were artificially aged by exposing the samples to elevated temperatures in an air environment. Short-beam shear tests were performed to determine mechanically the interlaminar shear strength of the samples. Photoacoustic spectra of the samples were also collected and compared to mechanical data. Chemometrics were performed on the spectral and mechanical data, and a good correlation was found between the near surface chemistry of the composite and overall mechanical integrity.
RosencwaigA., Photoacoustics and Photoacoustic Spectroscopy (John Wiley and Sons, New York, 1980).
2.
TamA. C., Rev. Mod. Phys.58, 381 (1986).
3.
McClellandJ. F.JonesR. W.LuoS. and SeaversonL. M, “A Practical Guide to FTIR Photoacoustic Spectroscopy”, in Practical Sampling Techniques for Infrared Analysis, ColemanP. B. Ed. (CRC Press, Boca Raton, FL, 1993), Chap. 5, pp. 107–144.
4.
McClellandJ. F.BajicS. J.JonesR. W. and SeaversonL. M, “Photoacoustic Spectroscopy”, in Modern Techniques in Applied Molecular Spectroscopy, MirabellaF. M. Ed. (John Wiley and Sons, New York, 1998), Chap. 6, pp. 221–265.
5.
HandleyJ., Anal. Chem.73, 685A (2001).
6.
McClellandJ. F.JonesR. W. and BajicS. J, “Photoacoustic Spectroscopy”, in Handbook of Vibrational Spectroscopy, ChalmersJ. M. and GriffithsP. R, Eds. (John Wiley and Sons, Chichester, UK, 2002), vol. 2, pp. 1231–1251.
7.
LiuZ.FeiD.HsuD. K.DayalV. and HaleR. D, “Ultrasonic NDE and mechanical testing of fiber placement composites”, in Review of Progress in Quantitative Nondestructive Evaluation (American Institute of Physics, Melville, NY, 2002), vol. 21, pp. 1078–1085.
8.
“Standard Test Method for Apparent Interlaminar Shear Strength of Parallel Fiber Composites by Short-Beam Method”, ASTM Designation D2344–84.
9.
HaalandD. M. and ThomasE. V, Anal. Chem.60, 1193 (1988).
10.
SavitzkyA. and GolayM. J. E, Anal. Chem.36, 1627 (1964).
