The interacting effect for collinear cracks near mismatching bimaterial interface under elastic creep
Dai, Yanwei and Liu, Yinghua and Chen, Haofeng and Liu, Donghuan (2015) The interacting effect for collinear cracks near mismatching bimaterial interface under elastic creep. Journal of Pressure Vessel Technology. ISSN 0094-9930 (In Press) (https://doi.org/10.1115/1.4031725)
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Abstract
In this paper, the modified reference stress method is introduced to estimate the C* integral for collinear creep cracks near the mismatching bimaterial interface (MBI) and the process that leads to these solutions is also presented. The interacting factors for creep cracks near the MBI are defined and the influences of different creep exponents and mismatching factors on creep interacting effect are studied. Results show that if two inner creep crack tips get closer, the interacting effect of creep cracks near the MBI will become much stronger. Under the same condition, the interacting factors of the creep cracks in materials with higher creep exponent is larger than that of the creep cracks in materials with lower creep exponent. For the same crack location, C* integral decreases with the increase of mismatching factors. Two novel dimensionless parameters are proposed to characterize the rationality of combination rules of ASME, API 579 and R6 codes for the interacting effect for creep collinear cracks near the MBI. With the proposed parameter, the non-conservative ranges to use the combination rules of ASME, API 579 and R6 codes are re-discussed and presented.
ORCID iDs
Dai, Yanwei, Liu, Yinghua, Chen, Haofeng ORCID: https://orcid.org/0000-0001-6864-4927 and Liu, Donghuan;-
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Item type: Article ID code: 55207 Dates: DateEvent20 September 2015Published20 September 2015AcceptedKeywords: mismatching bimaterial interface, interacting effect, collilnear creep cracks, elastic creep, Mechanical engineering and machinery, Manufactures, Mining engineering. Metallurgy, Mechanical Engineering, Mechanics of Materials, Industrial and Manufacturing Engineering, Metals and Alloys, Ceramics and Composites Subjects: Technology > Mechanical engineering and machinery
Technology > Manufactures
Technology > Mining engineering. MetallurgyDepartment: Faculty of Engineering > Mechanical and Aerospace Engineering Depositing user: Pure Administrator Date deposited: 21 Dec 2015 16:16 Last modified: 01 Jan 2024 09:57 URI: https://strathprints.strath.ac.uk/id/eprint/55207