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Acusto-ultrasonic measurements to minitor damage during fatigue of composistes
Alcoa Lab, Alcoa Center, PA, USA.
Alcoa Lab, Alcoa Center, PA, USA.
1984 (English)In: 1984 advances in aerospace sciences and engineering: structures, materials, dynamics, and space station propulsion ; presented at the winter annual meeting of the American Society of Mechanical Engineers, New Orleans, Louisiana, December 9 - 14, 1984 / [ed] Umur Yuceoglu, New York: American Society of Mechanical Engineers , 1984, p. 55-60Conference paper, Published paper (Refereed)
Abstract [en]

An acousto-ultrasonic technique was used to monitor damage initiation and development in (0, 90//2)//s, (0, plus or minus 45)//s, and (0, 90, plus or minus 45)//s graphite epoxy laminates. The laminates were either loaded in quasi-static tension or were fatigued with tension-tension loading cycles. At a number of intermediate stages (strain levels for quasi-static tests and load cycles for the fatigue tests), the loading was halted and the acousto-ultrasonic measurements were made on the specimens. Several quantitative parameters, which include moments and ratios of moments of the frequency spectrum, were found to correlate extremely well with the stiffness change and the stress-strain behavior of the specimens.

Place, publisher, year, edition, pages
New York: American Society of Mechanical Engineers , 1984. p. 55-60
Series
American Society of Mechanical Engineers. Aerospace Division. Publication AD, ISSN 0733-4230 ; 8
Identifiers
URN: urn:nbn:se:ltu:diva-35915Local ID: aa6c384b-301f-4ff6-a39c-8bf793c384faOAI: oai:DiVA.org:ltu-35915DiVA, id: diva2:1009169
Conference
Winter annual meeting of the American Society of Mechanical Engineers : 09/12/1984 - 14/12/1984
Note
Upprättat; 1984; 20131001 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-01-16Bibliographically approved

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Talreja, Ramesh

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