Studying the effect of different carbon and glass fabric stacking sequence on mechanical properties of epoxy hybrid composite laminates

• Published in: Composites communications 2020-10, Vol.21, p.100425, Article 100425
• Main Authors: Nagaraja, K.C., Rajanna, S., Prakash, G.S., Koppad, Praveennath G., Alipour, M.
• Format: Article
• Language: English
• Subjects: Flexural strength; Fractography; Mechanical properties; Polymer-matrix composites
• ISSN: 2452-2139
• DOI: 10.1016/j.coco.2020.100425

In the present work, the effect of stacking sequence on tensile and flexural properties of carbon-glass/epoxy hybrid composite laminates are reported. The composite laminates fabricated using resin infusion technique were subjected to tensile and flexural test as per ASTM D-3039 and ASTM D-790 standards respectively. The fracture surfaces after each test were studied using scanning electron microscope to arrive at possible failure mechanisms. Out of the two laminates tested, the one with carbon fabric positioned at exterior regions showed highest tensile and flexural strength of 380.35 MPa and 615.48 MPa respectively. Both the tensile and flexural failure analysis showed fiber breaking and fiber pull out as main causes for failure. Composite laminate with glass fabric at the exterior showed interface decohesion as major failure mechanism. This study showed importance of stacking carbon fabric at right position to obtain better tensile and flexural properties which is very important from composite design and cost point of view. •Development of Carbon-glass woven fabric based epoxy composite laminates.•Importance of studying the effect of stacking sequence on tensile and flexural strength.•High tensile and flexural strength for composite laminate with carbon fabric at exterior layer.