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Mechanical Properties and Fracture Surface Morphologies in Unnotched Specimens of Rubber-PMMA Composites

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Abstract

Correlations between mechanical properties and microscopic features were investigated using unnotched specimens of rubber-PMMA composites in very low to medium range of cross head speeds. It is found that: (1) a trapezoid-shaped smooth region and fish scale-like texture with bands in rough region correlates with brittle failure in pure PMMA, while a quarter circle-shaped smooth region and hackle-like texture, and the presence of dimples and/or voids correlate with ductile failure in rubber-PMMA composites; (2) decrease in degree of roughness in rubber-PMMA composites can be correlated with decrease in Young’s modulus; (3) decrease in size of the smooth region with increasing speed can be correlated with decrease in modulus of toughness; (4) larger smooth region in rubber-PMMA composites containing more rubber correlates with higher modulus of toughness.

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Authors and Affiliations

  1. College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, 150040, China

    Shiyun Gong

  2. School of Materials Science and Engineering, University of New South Wales, Sydney, 2052, Australia

    Sri Bandyopadhyay

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  1. Shiyun Gong
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  2. Sri Bandyopadhyay
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Correspondence to Shiyun Gong.

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Gong, S., Bandyopadhyay, S. Mechanical Properties and Fracture Surface Morphologies in Unnotched Specimens of Rubber-PMMA Composites. J. of Materi Eng and Perform 16, 601–606 (2007). https://doi.org/10.1007/s11665-007-9042-2

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  • DOI: https://doi.org/10.1007/s11665-007-9042-2

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