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Comparison of Methods for Measuring Fatigue Crack Closure in a Thick Specimen / SK. Ray, AF. Grandt

Conference Author
Mechanics of Fatigue Crack Closure (1986 : Charleston, SC)
Physical Description
1 online resource (17 pages) : illustrations, figures, tables
Additional Creators
Grandt, AF., Ray, SK., American Society for Testing and Materials, and ASTM International
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Summary
The objective of this paper is to compare fatigue crack closure loads obtained by various crack opening displacement methods. Crack closure loads are obtained by three different techniques: optical interferometry, backface strain measurements, and crack mouth opening displacement (CMOD) gage measurements. Optical interferometry gives complete through-the-thickness variation of crack closure, while backface strain and CMOD measurements provide an average (bulk) crack opening load for the entire specimen thickness. The present paper focuses on comparing the bulk specimen measurements of crack opening load with point measurements obtained at various points along the crack front from the interferometry method. It was observed that the closure loads obtained from backface strain measurements agree well with the CMOD closure values, although the interferometric crack opening loads are higher than either compliance techniques.
Dates of Publication and/or Sequential Designation
Volume 1988, Issue 982 (January 1988)
Subject(s)
Other Subject(s)
ISBN
9780803150522 (e-ISBN)
9780803109964
0803109962
Digital File Characteristics
text file PDF
Bibliography Note
Includes bibliographical references 18.
Other Forms
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
Full text article also available for purchase.
Also available in PDF edition.
Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1988. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details
Mode of access: World Wide Web.
Source of Acquisition
ASTM International PDF Purchase price USD25.
View MARC record | catkey: 28007582