NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Characterization of debond growth mechanism in adhesively bonded composites under mode II static and fatigue loadingsAn experimental investigation of adhesively bonded composite joint was conducted to characterize the debond growth mechanism under mode II static and fatigue loadings. For this purpose, end-notched flexure specimens of graphite/epoxy (T300/5208) adherends bonded with EC 3445 adhesive were tested. In all specimen tested, the fatigue failure occurred in the form of cyclic debonding. The present study confirmed the result of previous studies that total strain-energy-release rate is the driving parameter for cyclic debonding. Further, the debond growth resistance under cyclic loading with full shear reversal (i.e., stress ratio, R = -1) is drastically reduced in comparison to the case when subjected to cyclic shear loading with no shear reversal (i.e., R = 0.1).
Document ID
19890035457
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mall, S.
(USAF, Institute of Technology, Wright-Patterson AFB OH, United States)
Kochhar, N. K.
(Engineering Mechanics Research Corp. Troy, MI, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1988
Publication Information
Publication: Engineering Fracture Mechanics
Volume: 31
Issue: 5, 19
ISSN: 0013-7944
Subject Category
Structural Mechanics
Accession Number
89A22828
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available