Experimental and theoretical fracture analysis of quasi-brittle polymer components containing V-notches with end holes under combined tensile-shear loading

Torabi, Alireza; Amininejad, Shahab

Document Type : Research Paper

Authors

Department of New Science and Technologies, University of Tehran, Tehran, Iran

Abstract

In the present investigation, first, 48 fracture tests were conducted on the Brazilian disk specimens made of the quasi-brittle polymer Polymethyl-methacrylate and weakened by central V-notches with end holes (VO-notches) under combined tensile-shear loading with different mode mixity ratios. The fracture loads and the fracture initiation angles (FIAs) were experimentally measured. Then, two brittle fracture criteria were developed on the basis of the failure concepts of the maximum tangential stress (MTS) and the mean stress (MS) for predicting the experimental fracture loads and the FIAs, and the theoretical results were obtained in the form of the fracture curves and curves of fracture initiation angle. A very good agreement was shown to exist between the theoretical and the experimental results. Moreover, it was found that both the criteria provide almost identical predictions to the experimental results.

Keywords

References

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Journal of Science and Technology of Composites

Experimental and theoretical fracture analysis of quasi-brittle polymer components containing V-notches with end holes under combined tensile-shear loading

References

Volume 2, Issue 2 - Serial Number 2
September 2015
Pages 41-54

Experimental and theoretical fracture analysis of quasi-brittle polymer components containing V-notches with end holes under combined tensile-shear loading

References

Volume 2, Issue 2 - Serial Number 2September 2015Pages 41-54

Volume 2, Issue 2 - Serial Number 2
September 2015
Pages 41-54