Applications of a two-way debonding theory to short fibre composites |
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| Affiliation: | 1. Technische Universität Dresden, Institute of Construction Materials, DE-01062 Dresden, Germany;2. Paul Scherrer Institut, Department of Spallation Neutron Source (ASQ), CH-5232 Villigen/AG, Switzerland;1. Engineering Research Center of Technical Textiles, Ministry of Education, Donghua University, Shanghai 201620, PR China;2. College of Textiles, Donghua University, Shanghai 201620, China;3. Department of Industrial and Systems Engineering, Texas A&M University, College Station, TX 77843, USA;1. Department of Mechanical and Aerospace Engineering, Monash University, Wellington Road, Clayton, Victoria 3800, Australia;2. CSIRO Earth Science & Resource Engineering, Clayton North, Victoria 3169, Australia;1. IMDEA Materials Institute, C/Eric Kandel, 2, 28906 Getafe, Madrid, Spain;2. National Center for Metallurgical Research (CENIM-CSIC), Av. Gregorio del Amo, 8, 28040 Madrid, Spain |
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| Abstract: | Traditional fibre debonding theories which consider debonding only from the loaded end of the fibre are only applicable to composites with low fibre volume fraction, low fibre/matrix moduli ratio and high interfacial strength/interfacial friction ratio. A two-way debonding theory, which is applicable to all general cases, has recently been developed. In this paper, major findings from the new two-way theory are first summarized. The new theory is compared with traditional theories with respect to the prediction of composite properties. For the fibre pull-out test specimen, where fibre volume fraction is very low, a new method of deriving interfacial bond properties based on one-way debonding theory is presented. For practical composite systems, the significance of employing the new two-way debonding theory is discussed. |
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