Abstract
It is usual in instrumented fracture tests, such as Charpy V-Notch (CVN) and Drop Weight Tear Tests (DWTT), to consider the total energy expended in the test (ET), which consists of the energy expended in achieving peak load (Ei), and the difference between these two energy values (Ep). The specific details of the sample geometry are important for each of these energy values. It is known that none of the CVN energy values is particularly sensitive to the ductile to brittle transition behaviour of the materials. In this paper, it is shown that the ratio Ei/Ep is not strongly dependent on the sample geometry but it is sensitive to the type of fracture. Results for the ratio E-i/Ep from both CVN and DWTT are found to be in good numerical agreement with one another, and both results clearly demonstrate the ductile to brittle transition behaviour. Theoretical analysis indicates that this ratio is primarily dependent on crack propagation time.
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© 1985 Martinus Nijhoff Publisher, Dordrecht
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Shimizu, H., Gibbon, W.M., Sullivan, J. (1985). Time Dependent Parameters in Dynamic Fracture. In: Krausz, A.S. (eds) Time-Dependent Fracture. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5085-6_19
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DOI: https://doi.org/10.1007/978-94-009-5085-6_19
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8748-3
Online ISBN: 978-94-009-5085-6
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