Failure Mechanisms and Fracture Energy of Hybrid Materials

Sheikh Najam

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English

Mohammed Abdul Sattar
12 February 2024

Condensed matter physics (liquid state & solid state physics); Plastics & polymers technology; Textile & fibre technology; Mechanical engineering; Materials science

Summary
Details

Fibre hybridisation is a well-established methodology to enhance the failure strains of ﬁbre reinforced composites. In a hybrid ﬁbre composite, the matrix is reinforced by two or more types of ﬁbres, with typically a large stiﬀness contrast. When exactly two types of ﬁbres are used for reinforcement, the ﬁbres with greater stiﬀness are conventionally called the low extension (LE) ﬁbres, while those with greater compliance are called high extension (HE) ﬁbres. Hybrid ﬁbre composites are typically divided into three cate- gories. If layers of LE and HE ﬁbres are stacked over one other, an interlayer or layer-by-layer conﬁguration is obtained. If yarns of LE and HE ﬁbres are co-woven to form a hybrid ﬁbre composite, an intralayer or yarn-by-yarn conﬁguration is obtained. Finally, if the LE and HE ﬁbres are randomly mixed together, the intrayarn or ﬁbre-by-ﬁbre conﬁguration is obtained. From a manufacturing perspec- tive, it is most diﬃcult to produce intrayarn composites, and easiest to produce interlayer composites.

Hybridisation seeks to combine the advantages of both ﬁbre types and alleviate some of the disadvantages. As an example, carbon ﬁbre reinforced plastic (CFRP) composites exhibit good strength to weight ratio, but undergo brittle failure leading to low fracture toughness. On the other hand, glass ﬁbre reinforced plastic (GFRP) composites exhibit ductile failure, but suﬀer from a relatively higher density than CFRPs, resulting in a lower strength to weight ratio. By combining the carbon ﬁbres and glass ﬁbres at a microscopic level, intermediate properties can be achieved.

By: Sheikh Najam
Imprint: Mohammed Abdul Sattar
Dimensions: Height: 279mm, Width: 216mm, Spine: 6mm
Weight: 290g
ISBN: 9798224654703
Pages: 118
Publication Date: 12 February 2024
Audience: General/trade , ELT Advanced
Format: Paperback
Publisher's Status: Active