NDLI: Proceedings of the second annual symposium for nondestructive evaluation of bond strength

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Proceedings of the second annual symposium for nondestructive evaluation of bond strength

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1999
Description	Ultrasonics, microwaves, optically stimulated electron emission (OSEE), and computational chemistry approaches have shown relevance to bond strength determination. Nonlinear ultrasonic nondestructive evaluation methods, however, have shown the most effectiveness over other methods on adhesive bond analysis. Correlation to changes in higher order material properties due to microstructural changes using nonlinear ultrasonics has been shown related to bond strength. Nonlinear ultrasonic energy is an order of magnitude more sensitive than linear ultrasound to these material parameter changes and to acoustic velocity changes caused by the acoustoelastic effect when a bond is prestressed. Signal correlations between non-linear ultrasonic measurements and initialization of bond failures have been measured. This paper reviews bond strength research efforts presented by university and industry experts at the Second Annual Symposium for Nondestructive Evaluation of Bond Strength organized by the NDE Sciences Branch at NASA Langley in November 1998.
File Size	4816688
Page Count	196
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19990068469
Archival Resource Key	ark:/13960/t6wx2b58t
Language	English
Publisher Date	1999-05-01
Access Restriction	Open
Subject Keyword	Computational Chemistry Nondestructive Tests Stimulated Emission Joints Junctions Adhesives Conferences Acoustic Velocity Nonlinearity Microstructure Prestressing Microwaves Ultrasonics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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