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Equations For Selected Fracture-Mechanics ParametersEquations describing crack-mouth-opening displacements, stress-intensity factors, and related fracture-mechanics parameters of chevron-notched short bar and rod specimens presented in report. Equations in forms suitable for determining fracture toughnesses from maximum loads, for determining crack-extension-resistance curves, and for setting sensitivities of testing instruments. Useful in facilitating testing and interpretation of data from tests of brittle metals, ceramics, and glasses, formed into chevron-notched specimens for fracture testing according to concepts.
Document ID
19940000708
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Bubsey, Raymond T.
(NASA Lewis Research Center, Cleveland, OH.)
Orange, Thomas W.
(NASA Lewis Research Center, Cleveland, OH.)
Pierce, William S.
(NASA Lewis Research Center, Cleveland, OH.)
Shannon, John L., Jr.
(NASA Lewis Research Center, Cleveland, OH.)
Date Acquired
August 16, 2013
Publication Date
December 1, 1994
Publication Information
Publication: NASA Tech Briefs
Volume: 18
Issue: 12
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
LEW-15865
Accession Number
94B10708
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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