Energy Absorption Evaluating of Corrugated Composite Sandwich panel and Corrugated Composite Sandwich Panels Reinforced by without Pre-strain Shape Memory Alloy Wires under Compression test

Composite materials have high specific strength, specific stiffness and energy absorption as well as offer other benefits such as part consolidation, styling flexibility, good noise/ vibration characteristics and good corrosion resistance, which are well suited for future lighter and more energy efficient for different industries. Sandwich structures consisting of various facesheets and cores. Composite corrugated panels, are a subdivision of sandwich panel structures which could decrease the number of parts used in a structure, which increases the speed of assembly and reduces the manufacturing costs. This paper present experimental investigation of compression behavior of lightweight corrugated core composite (CCC) sandwich panel and corrugated core smart composites (CCSC) sandwich panel subjected to quasi-static edgewise compression loading. Presence of shape memory alloy (SMA) wire and their pre-strain percentages are the parameters studied in this investigation. Manufacturing method presented and evaluation of the mechanical characteristics of the CCC and CCSC sandwich panels are expressed. The core geometry of specimens is trapezoid corrugated core manufactured by aluminum grade 3105 series. The facesheets of specimens have four layers of woven glass fibers reinforced epoxy composite. For evaluation the effect of presence of SMA wires on mechanical specifications of sandwich panel, three SMA wires without percentages (0%) are embedded in each composite facesheets of specimens. Energy absorption of CCC and CCSC sandwich panels were calculated and evaluated. Results showed that CCC sandwich panel has higher energy absorption than CCSC sandwich panels with 0 % pre-strain.