Modelling the influence of laser drilled recast layer thickness on the fatigue performance of CMSX-4
Morar, Nicolau Iralal and Roy, Rajkumar and Gray, Simon and Nicholls, John and Mehnen, Jörn (2018) Modelling the influence of laser drilled recast layer thickness on the fatigue performance of CMSX-4. Procedia Manufacturing, 16. pp. 67-74. ISSN 2351-9789 (https://doi.org/10.1016/j.promfg.2018.10.173)
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Abstract
This paper introduces a novel approach to fatigue life prediction modelling considering the laser drilling effect on film cooling holes of turbine vanes. The methodology proposed is based on a stress-life model such as the Basquin law and the introduction of manufacturing damage effect. The proposed empirical model gives a unique versatility compared to other stress-life models by considering surface damage such as the recast layer produced by the laser drilling process. The proposed empirical model has been thoroughly tested and validated using existing fatigue data. The statistical analysis shows that the proposed model is adequate for estimating the fatigue life of laser drilled specimens considering the recast layer thicknesses effect. The proposed model also can estimate the life of untested specimens even when only a small sample of fatigue data is available, thereby reducing the required testing data.
ORCID iDs
Morar, Nicolau Iralal, Roy, Rajkumar, Gray, Simon, Nicholls, John and Mehnen, Jörn ORCID: https://orcid.org/0000-0001-6625-436X;-
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Item type: Article ID code: 65991 Dates: DateEvent2 November 2018Published2 November 2018Published Online1 November 2018AcceptedSubjects: Technology > Engineering (General). Civil engineering (General) > Engineering design Department: Faculty of Engineering > Design, Manufacture and Engineering Management Depositing user: Pure Administrator Date deposited: 06 Nov 2018 09:56 Last modified: 03 Sep 2024 00:57 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/65991