An effective method to investigate short crack growth behaviour by reverse bending testing
An effective method to investigate short crack growth behaviour by reverse bending testing
A reverse bending rig has the advantage of relatively cheap construction compared with servo-controlled machines, and its robustness and reliability make it ideally suited to long-term testing programmes. In this paper, the details of the mechanical mechanism of a bending rig, the methods of its strain measurement and stress-strain analysis have been presented. A series of tests has been carried out to investigate short crack growth behaviour of AISI type 316 stainless steel under creep-fatigue conditions at 550C. The advantage of this type of test allows a comparison to be made, on one specimen, of the influence of both tensile and compressive hold periods on crack growth behaviour. It has been shown that predominantly intergranular long cracks form on the tensile side and transgranular short cracks on the compressive side and these are a prominent feature between 0.9 – 2.5% strain range.
565-574
Gao, N.
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Brown, M.W.
390a5a4a-bd65-4dc2-b5f3-a6411839a014
Miller, K.J.
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Reed, P. A. S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
2007
Gao, N.
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Brown, M.W.
390a5a4a-bd65-4dc2-b5f3-a6411839a014
Miller, K.J.
9db3e815-a387-4787-a67b-888c123d4330
Reed, P. A. S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Gao, N., Brown, M.W., Miller, K.J. and Reed, P. A. S.
(2007)
An effective method to investigate short crack growth behaviour by reverse bending testing.
International Journal of Fatigue, 29, .
Abstract
A reverse bending rig has the advantage of relatively cheap construction compared with servo-controlled machines, and its robustness and reliability make it ideally suited to long-term testing programmes. In this paper, the details of the mechanical mechanism of a bending rig, the methods of its strain measurement and stress-strain analysis have been presented. A series of tests has been carried out to investigate short crack growth behaviour of AISI type 316 stainless steel under creep-fatigue conditions at 550C. The advantage of this type of test allows a comparison to be made, on one specimen, of the influence of both tensile and compressive hold periods on crack growth behaviour. It has been shown that predominantly intergranular long cracks form on the tensile side and transgranular short cracks on the compressive side and these are a prominent feature between 0.9 – 2.5% strain range.
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Inter_Journal_Fatig_29-2007-565.pdf
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Published date: 2007
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Local EPrints ID: 23912
URI: http://eprints.soton.ac.uk/id/eprint/23912
ISSN: 0142-1123
PURE UUID: 0bf618a6-b466-4c22-aec7-abf0fdbf686a
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Date deposited: 17 Mar 2006
Last modified: 16 Mar 2024 03:21
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Author:
M.W. Brown
Author:
K.J. Miller
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