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Proposed life prediction model for laser‐formed high‐strength low‐alloy curved components
Author(s) -
McGRATH P. J.,
HUGHES C. J.
Publication year - 2007
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2007.01103.x
Subject(s) - sheet metal , materials science , curvature , process (computing) , forming processes , mechanical engineering , radius of curvature , tola , structural engineering , alloy , laser , radius , metallurgy , engineering drawing , computer science , composite material , engineering , geometry , optics , mathematics , mean curvature , physics , mean curvature flow , operating system , computer security
Techniques employed for material processing using laser technology are progressing at a rapid pace. One such technique is that of forming sheet metal plates. This high‐intensity localized heating process allows for forming of metallic sheet materials without the need for expensive tools and dies or any mechanical assistance. The fundamental mechanisms related to this process are reasonably well understood and documented but there remain areas that require further research and development. One such area is the fatigue behaviour of sheet materials manufactured by this novel process. Hence, the proceeds of this paper deal with fatigue life prediction of sheet metal components laser‐formed to a radius with a curvature of approximately 120 mm. The approach to this proposed model considers the mean stress relationship as given by Gerber and a prediction model derived from combining the aspects of life prediction models according to Collins and Juvinall & Marshek.