NDLI: Observation of the initiation and progression of damage in compressively loaded composite plates containing a cutout

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Observation of the initiation and progression of damage in compressively loaded composite plates containing a cutout

Content Provider	NASA Technical Reports Server (NTRS)
Author	Babcock Jr., C. Waas, A.
Copyright Year	1986
Description	A series of experiments was carried out to determine the mechanism of failure in compressively loaded laminated plates with a circular cutout. Real time holographic interferometry and photomicrography are used to observe the progression of failure. These observations together with post experiment plate sectioning and deplying for interior damage observation provide useful information for modelling the failure process. It is revealed that the failure is initiated as a localised instability in the zero layers, at the hole surface. With increasing load extensive delamination cracking is observed. The progression of failure is by growth of these delaminations induced by delamination buckling. Upon reaching a critical state, catastrophic failure of the plate is observed. The levels of applied load and the rate at which these events occur depend on the plate stacking sequence.
File Size	17347207
Page Count	66
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19870002589
Archival Resource Key	ark:/13960/t11p3021s
Language	English
Publisher Date	1986-11-01
Access Restriction	Open
Subject Keyword	Structural Mechanics Compression Loads Laminates Photomicrography Real Time Operation Crack Propagation Openings Plates Structural Members Failure Analysis Delaminating Cracking Fracturing Holographic Interferometry Composite Structures Buckling Crack Initiation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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