Prediction of crushing stress in composite materials

Goh, S. and Ku, H. and Ang, S. L. (2008) Prediction of crushing stress in composite materials. Journal of Composite Materials, 42 (5). pp. 467-484. ISSN 0021-9983

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Abstract

A simple mathematical model for predicting the crushing stress of composite materials was derived and presented in this paper. The present knowledge of fracture mechanics and strength of materials are used as the basis for the model. The fracture mechanics part of the analysis was based on energy release rate approach; the energy release rate, G, of the proposed model was determined by this approach. This energy release rate was based on the Mode I (opening or tensile mode) failure. As for the strength of materials part analysis, buckling theory was used to determine the critical load of the fibre beams. These two engineering concepts were combined to form the equation for the proposed model. The derived equation is a function of the materials properties, geometric and physical parameters of the composite materials. The calculated stresses from the derived equation were compared with experimental data from technical and research papers. Good agreements shown in the results are encouraging and recommendations for future analysis with different modes of failure were also presented. This paper enables engineering designers to predict crushing stress in composite materials with confidence and makes their work more efficient and reliable.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author's verison deposited in accordance with the copyright policy of the publisher. 'Copyright 2008 Sage Publications. This is the authors' version of the work. It is posted here with permission of the publisher for your personal use. No further distribution is permitted. For the definitive version of this article, please refer to the journal. To access the journal's website, use hypertext links above.'
Depositing User: Dr Harry Ku
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 30 Mar 2008 23:38
Last Modified: 02 Jul 2013 23:00
Uncontrolled Keywords: composite materials; crushing stress; fracture mechanics; cracking opening angle; buckling theory
Fields of Research (FOR2008): 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0913 Mechanical Engineering > 091308 Solid Mechanics
Socio-Economic Objective (SEO2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: doi: 10.1177/0021998307086204
URI: http://eprints.usq.edu.au/id/eprint/4024

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