NDLI: Fracture study of windshield glass panes

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Fracture study of windshield glass panes

Content Provider	NASA Technical Reports Server (NTRS)
Author	Yeh, H. Y.
Copyright Year	1987
Description	The major stresses which cause crack propagation in windshield glass panes are induced by bending moments which result from the pressure differentials across the panes. Hence the stress intensity factors for the finite plate with the semi-elliptical surface flaw and edge crack under the bending moments are examined. The results show that the crack growth will be upperbound if it is computed by using the stress intensity factor for the finite plate with the edge crack subjected to pure bending moments. Furthermore, if the ratio of crack depth to plate thickness, a/t, is within 0.3, the stress intensity factor can be conservatively assumed to be constant at the value of a/t equal to zero. A simplified equation to predict the structural life of glass panes is derived based on constant stress intensity factor. The accuracy of structural life is mainly dependent on how close the empirical parameter, m, can be estimated.
File Size	775952
Page Count	20
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19880005509
Archival Resource Key	ark:/13960/t4fn62g77
Language	English
Publisher Date	1987-11-01
Access Restriction	Open
Subject Keyword	Structural Mechanics Bending Moments Fracture Mechanics Stress Intensity Factors Windshields Plates Structural Members Glass Prediction Analysis Techniques Defects Crack Propagation 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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