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Cyclic debonding of adhesively bonded compositesThe fatigue behavior of a simple composite to composite bonded joint was analyzed. The cracked lap shear specimen subjected to constant amplitude cyclic loading was studied. Two specimen geometries were tested for each bonded system: (1) a strap adherend of 16 plies bonded to a lap adherend of 8 plies; and (2) a strap adherend of 8 plies bonded to a lap adherend of 16 plies. In all specimens the fatigue failure was in the form of cyclic debonding with some 0 deg fiber pull off from the strap adherend. The debond always grew in the region of adhesive that had the highest mode (peel) loading and that region was close to the adhesive strap interface.
Document ID
19830006253
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mall, S. (NASA Langley Research Center Hampton, VA, United States)
Johnson, W. S. (NASA Langley Research Center Hampton, VA, United States)
Everett, R. A., Jr. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 4, 2013
Publication Date
November 1, 1982
Subject Category
Structural Mechanics
Report/Patent Number
NAS 1.15:84577
NASA-TM-84577
Report Number: NAS 1.15:84577
Report Number: NASA-TM-84577
Meeting Information
Meeting: Intern. Symp. on Adhesive Joints: Their Formation Characteristics, and Testing
Location: Kansas City, MO
Country: United States
Start Date: September 12, 1982
End Date: September 17, 1982
Accession Number
83N14524
Funding Number(s)
PROJECT: RTOP 505-33-23-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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