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Quantitative assessment of damage growth in graphite epoxy laminates by acousto-ultrasonic measurements
Virginia Polytechnic Institute and State University, Materials Response Group, Blacksburg, VA.
Virginia Polytechnic Institute and State University, Materials Response Group, Blacksburg, VA.
1984 (English)In: Review of progress in quantitative nondestructive evaluation: Proceedings of the Tenth Annual Review of Progress in Quantitative Nondestructive Evaluation, held August 7 - 12, 1983, at the University of California, Santa Cruz, California / [ed] Donald O. Thompson, New York: Plenum Publishing Co., N.Y. , 1984, Vol. 3 B, p. 1099-1106Conference paper, Published paper (Refereed)
Abstract [en]

Composite materials fail by a complex development of many different damage modes, including matrix cracking, fiber-matrix debonds, delamination and fiber breakage. Nondestructive testing of composite materials must therefore concern itself with something other than the detection and geometrical location, sizing and orienting of single cracks. The acousto-ultrasonic techniques, developed by Vary, et al. , has the potential to respond to the development of damage states and to provide a quantitative parameter which monitors this damage development. This paper presents some preliminary data taken during quasi-static loading and fatigue of graphite epoxy laminates which indicate the plausibility of this statement. The ultrasonic signals received from transducers were amplified, digitized and stored in computer for later spectral analysis. A Fast Fourier Transform algorithm was used to perform spectral analysis. It is shown that the acousto-ultrasonic test is capable of sensitively monitoring the development of damage in graphite epoxy laminates

Place, publisher, year, edition, pages
New York: Plenum Publishing Co., N.Y. , 1984. Vol. 3 B, p. 1099-1106
Identifiers
URN: urn:nbn:se:ltu:diva-27031Local ID: 05601fd6-8050-43b8-94d4-4d8a263c6744ISBN: 306416786 (print)OAI: oai:DiVA.org:ltu-27031DiVA, id: diva2:1000212
Conference
Annual Review of Progress in Quantitative Nondestructive Evaluation : 07/09/1983 - 12/09/1983
Note
Upprättat; 1984; 20130925 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-01-16Bibliographically approved

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