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Scaling effects in sublaminate-scaled composite laminatesA series of tensile tests have been carried out to determine the effect of specimen size on the mechanical response of composite laminates which were scaled at the sublaminate level. Two material systems were studied AS4/3502 and AS4/PEEK. The effect of specimen size was examined with respect to first ply failure stress, delamination stress, ultimate stress, and strain at failure. In general, the strength of scaled specimens increased with increasing specimen size. Several models from the published literature were applied with varying degrees of success to predict the first ply failure and delamination stress in scaled composites. It was found that the effect of ply constraint is not addressed properly in the existing theories.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Kellas, Sotiris
(Lockheed Engineering and Sciences Co. Hampton, VA, United States)
Johnson, David P.
(NASA Langley Research Center Hampton, VA, United States)
Morton, John
(Virginia Polytechnic Inst. and State Univ. Blacksburg, United States)
Jackson, Karen E.
(U.S. Army, Vehicle Structures Directorate, Hampton VA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: AIAA(ASME)ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 34th and AIAA/ASME Adaptive Structures Forum, La Jolla, CA, Apr. 19-22, 1993, Technical Papers. Pt. 3 (A93-33876 1
Publisher: American Institute of Aeronautics and Astronautics
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 93-1513
Accession Number
Funding Number(s)
Distribution Limits

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