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A new approach to fracture toughness analysis and its application to ABS polymers

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Abstract

A new approach is proposed to analyze the fracture behavior with crack tip plasticity by the use of three independent measurements: E0 is the energy required per unit length of crack front to prepare the crack just before propagation; the Ef-curve is a plot of the energy required to produce a unit area of fractured surface versus the crack length; and the Ka-curve is a plot of the applied stress intensity factor KIapp versus the crack length. For ABS polymers, the prefracture energy E0 is 33 Jm−1; the Ef-curve is a horizontal line of 5.2 × 104 Jm−2; and the Ka curve has three different regions which depend on the development of the plastic zone during fracture.

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Authors and Affiliations

  1. Materials Science Program, Department of Mechanical Engineering, University of Rochester, Rochester, New York, 14627, USA

    Beta Yuhong Ni, Tong-Yi Zhang & J. C. M. Li

Authors
  1. Beta Yuhong Ni
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  2. Tong-Yi Zhang
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  3. J. C. M. Li
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Ni, B.Y., Zhang, TY. & Li, J.C.M. A new approach to fracture toughness analysis and its application to ABS polymers. Journal of Materials Research 6, 1369–1373 (1991). https://doi.org/10.1557/JMR.1991.1369

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  • DOI: https://doi.org/10.1557/JMR.1991.1369

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