Rapid prediction of fibre-dominant tensile failure in randomly oriented strands

Author:

Jesus André1ORCID,Xu Xiaodong23ORCID

Affiliation:

1. School of Architecture, Building and Civil Engineering, Loughborough University, Leicestershire, UK

2. University of the West of England, Bristol, UK

3. Bristol Composites Institute, University of Bristol, Bristol, UK

Abstract

A stochastic morphological modelling framework has been established to predict the tensile behaviour of Randomly Oriented Strands made of ultra-thin Carbon Fibre Reinforced Thermoplastic prepreg tapes. The tape properties from their distributions are generated in a Monte Carlo simulation. The Young’s modulus of a laminate is accurately predicted using classical laminate theory. Fibre-dominant tensile failure is also accurately predicted in Carbon Fibre Reinforced Thermoplastics Sheet Moulding Compounds using Weibull theory. Material discontinuity is accounted for via the introduction of a stress concentration factor, as a result of tape overlaps. The predicted tensile strength values and scatter were found to increase with increasing tape length, which agrees well with literature data, and thus demonstrates the reliability of the proposed modelling framework. The rapid modelling framework is well-suited for application in structures.

Funder

University of the West of England

Royal Society

Publisher

SAGE Publications

Subject

Materials Chemistry,Polymers and Plastics,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites

Reference20 articles.

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4. Nakashima Y, Suganuma H, Yamashita S, et al. Influence of strand dispersion method on mechanical properties of randomly oriented carbon fiber strand thermoplastic composites. In: 21st International Conference on Composite Materials (ICCM-21). Xi’an, China, August 20 to 25, 2017.

5. Sato Y, Takahashi J, Matsuo T, et al. Elastic modulus estimation of chopped carbon fiber tape reinforced thermoplastics using the Monte Carlo simulation. In: 19th International Conference on Composite Materials (ICCM-19), Montreal, Canada, July 28 to August 2, 2013, pp. 6718–6725.

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