Hybrid composites under high strain rate compressive loading

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 498; no. 1; pp. 87 - 99
• Main Authors: Naik, N.K., Ch, Veerraju, Kavala, Venkateswara Rao
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Kidlington Elsevier B.V 20-12-2008; Elsevier
• Subjects: Applied sciences; Composites; Compressive loading; Exact sciences and technology; Forms of application and semi-finished materials; High strain rate; Hybrid composite; Mechanical properties; Physical properties; Polymer industry, paints, wood; Properties and testing; Technology of polymers; Woven fabric; Woven fabric; Compressive loading; High strain rate; Hybrid composite; Resistance strain gauge; High strain; Wave attenuation; Fiber reinforced material; Epoxy resin; Composite material; Hopkinson bar; Test method; Woven material; Glass fiber; Carbon fiber; Strain rate
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/j.msea.2007.10.124

Hybrid composites consist of two or more types of fibres and/or matrices in a composite. By combining two or more types of fibres, it is possible to club advantages of both the fibres while simultaneously mitigating their less desirable qualities. Investigations on high strain-rate behaviour of a typical hybrid composite under compressive loading are presented. The hybrid composite is made using satin weave carbon and plain weave E-glass with epoxy resin. Studies were also carried out on satin weave carbon/epoxy and plain weave E-glass/epoxy. Compressive split Hopkinson pressure bar (SHPB) apparatus was used for the studies. Compressive properties were evaluated along all the three principal directions in the strain-rate range of 546–1503
s
−1. During SHPB testing of the specimens, it was observed that the peak force obtained from the strain gauge mounted on the transmitter bar is lower than the peak force obtained from the strain gauge mounted on the incident bar. The explanation for this is provided based on stress wave attenuation studies.