Improving stability in the double-cantilever-beam fracture test

Robert C. Wetherhold; James A. Forand

doi:10.1016/0921-5093(91)90816-6

Improving stability in the double-cantilever-beam fracture test

Robert C. Wetherhold
, James A. Forand

Department of Mechanical and Aerospace Engineering

SUNY Buffalo

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The double-cantilever-beam test is typical of traditional fracture tests used to determine critical stress intensity factor or critical energy release rates. In its basic fixed-grip configuration, it should allow a number of data points to be taken during a slow controlled crack propagation. Machine compliance and initial machined-notch bluntness may, however, cause the crack to propagate catastrophically in brittle materials. This letter deals with the use of externally applied closure forces to improve the crack growth stability in brittle materials.

Original language	English
Pages (from-to)	L17-L20
Journal	Materials Science and Engineering: A
Volume	147
Issue number	1
DOIs	https://doi.org/10.1016/0921-5093(91)90816-6
State	Published - Oct 30 1991

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abstract = "The double-cantilever-beam test is typical of traditional fracture tests used to determine critical stress intensity factor or critical energy release rates. In its basic fixed-grip configuration, it should allow a number of data points to be taken during a slow controlled crack propagation. Machine compliance and initial machined-notch bluntness may, however, cause the crack to propagate catastrophically in brittle materials. This letter deals with the use of externally applied closure forces to improve the crack growth stability in brittle materials.",

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N2 - The double-cantilever-beam test is typical of traditional fracture tests used to determine critical stress intensity factor or critical energy release rates. In its basic fixed-grip configuration, it should allow a number of data points to be taken during a slow controlled crack propagation. Machine compliance and initial machined-notch bluntness may, however, cause the crack to propagate catastrophically in brittle materials. This letter deals with the use of externally applied closure forces to improve the crack growth stability in brittle materials.

AB - The double-cantilever-beam test is typical of traditional fracture tests used to determine critical stress intensity factor or critical energy release rates. In its basic fixed-grip configuration, it should allow a number of data points to be taken during a slow controlled crack propagation. Machine compliance and initial machined-notch bluntness may, however, cause the crack to propagate catastrophically in brittle materials. This letter deals with the use of externally applied closure forces to improve the crack growth stability in brittle materials.

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Improving stability in the double-cantilever-beam fracture test

Abstract

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