Abstract
This paper investigates the micro fracture process in laminated composites based on a probabilistic approach. Two probabilistic fracture models; a statistical model and a stochastic model, have been developed for predicting the failure stress in composites containing geometric discontinuities such as holes and cracks. A two-parameter Weibull distribution of fiber strength and the elastic properties of matrix materials are used in the analysis. The results show that the fracture stress is related to notch size by a power law similar to that proposed by Mar and Lin. Experiments were conducted to verify the probabilistic fracture models developed. The strength reduction factors for boron/epoxy (0/-45/0/45)s laminates were obtained and the fiber damage near hole edge was studied. The experimental results agree well with the predictions from the probabilistic fracture models.
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© 1991 Elsevier Science Publishers Ltd
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Lin, K.Y., Cheng, M.C. (1991). A Probabilistic Approach to Tensile Fracture of Composites with Holes. In: Teoh, S.H., Lee, K.H. (eds) Fracture of Engineering Materials and Structures. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3650-1_24
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DOI: https://doi.org/10.1007/978-94-011-3650-1_24
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-85166-672-0
Online ISBN: 978-94-011-3650-1
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