Abstract
For the evaluation of the behaviour of cracked components, plane specimens with a straight crack, characterized by its length a, are considered. Real cracks usually are two-dimensional surface cracks with a curved crack front. The aim of fracture mechanics is the prediction of critical loads for components with these cracks from material data obtained with the plane specimens such as compact or bend specimens The main problem is the varying stress and strain field along the crack front. For linear-elastic behaviour the determination of the stress intensity factor in the case of stress gradients and the fatigue crack pro pagation are discussed. Then the methods of plastic zone correction, crack opening displacement, J-Integral and limit load criteria are described. Finally some experimental results are presented.
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References
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© 1985 ECSC,EEC,EAEC, Brussels and Luxembourg
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Munz, D. (1985). Surface Cracks. In: Larsson, L.H. (eds) Elastic-Plastic Fracture Mechanics. Ispra Courses on Materials, Engineering and Mechanical Science. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5380-2_7
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DOI: https://doi.org/10.1007/978-94-009-5380-2_7
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8874-9
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