In this paper, we describe a novel approach for delamination detection, which involves (1) the application of a moving load on the composite member, and (2) measurement of total extension in embedded optical fiber(s). A theoretical study indicates that a single loading test can provide sufficient information to deduce the delamination location (in both the length and thickness directions) as well as the delamination size.
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References
1.
ALLAEI, D."Smart Aircraft by Continuous Condition Monitoring of Aircraft Structures and Components."2nd European Conference on Smart Structures and Materials, Glasgow, UK, 152-155 (1994).
2.
BREBBIA, C.A.The Boundary Element Method for Engineers. Wiley, New York (1978).
3.
EZEKIEL. S. (ed.) Fiber Optic Gyros: 15th Anniversary Conference: 4-6 September 1991. Boston. Massachusetts, SPIE (1992).
4.
GIRSHOVICH. S. , GOTTESMAN, T., ROSENTHAL. H., DRUKKER. E. AND STEIN-BERG, Y."Impact Damage Assessment of Composites,"Damage Detection in Composite Materials, ASTM STP 1128. 183-199 (1992).
5.
McRAE, K.I. , MCCRAY. A.G.. RUSSELL. A.J. AND BOWERS, C.P."Ultrasonic Imaging of Delamination Damage around Fastener Holes in Graphite/Epoxy Composite,"Damage Detection in Composite Materials, ASTM STP 1128, 163-179 (1992).
6.
MEASURES. R.M."Progress Towards Fiber Optic Smart Structures at UTIAS," in Proceedings of Fiber Optic Smart Structures and Skins III. SPIE Vol. 1370. 46-48 (1990).
7.
MEASURES, R.M. . GLOSsop. N.D.W.. LYMER, J.. LEBLANC, M., WEST, S.. DUBOIS, S., TSAW. W. AND TENNYSON. R.C."Structurally Integrated Fiber Optic Damage Assessment System for Composite Materials."Applied Optics. Vol. 28, 2626-2633 (1989).
8.
UDD, E.Fiber Optic Smart Structures, John Wiley & Sons (1995).