پديدآورندگان :
khalili S. M. R Center of research for advanced and smart materials and structures, K.N Toosi University of Technology, Tehran, Iran , Rajabpour M mortezarajabpour@yahoo.com Young Researchers and Elite Club, Semnan Branch, Islamic Azad University, Semnan, Iran , Jafarinezhad M. R Faculty of Engineering, Postgraduate School, South Tehran Branch, Islamic Azad University, Tehran, Iran , Maher R Faculty of Engineering, Postgraduate School, South Tehran Branch, Islamic Azad University, Tehran, Iran
كليدواژه :
Shape memory alloy , basalt , compression , hybrid composites
چكيده فارسي :
This paper presents an experimental investigation into the compression behavior of shape memory alloy hybrid composites (SMAHCs) subjected to quasi-static loading taking into account of rotation effects of shape memory wire in basalt continuous filament (BCF) direct roving epoxy composite. Two types of specimen prepared, the (BCF) direct roving reinforced epoxy composite filled with shape memory wire and (BCF) direct roving reinforced epoxy composite without shape memory wire and compression strengths of two specimens per type are analyzed. Specimens were prepared by hand layup at room temperature for curing. The geometry of specimens are hallow cylinder with l/d = 2 that l and d is length and outer diameter of hallow cylinder respectively. In shape memory alloy hybrid composites (SMAHCs) specimen, shape memory wire rotate between second and third layer with 1 revolution per 1 cm. The diameter wire is 0.5 mm . For composites specimen four layer (BCF) direct roving reinforced epoxy composite prepared. The effect of shape memory wire on the maximum load bearing capacity of resultant specimens after quasi static damage was experimentally investigated. Results of compression test showed that composites specimen with four layer (BCF) direct roving reinforced epoxy composite has maximum load about 9453 N and 8717 N respect to 12 mm displacement and shape memory wire hybrid composites with rotate wire between second and third layer has maximum load about 5215 N and 5363N respect to 12 mm displacement. Similarly Ultimate stress of basalt continuous epoxy composite for two specimens are 19.7 Mpa and 17 Mpa while for basalt continuous epoxy composite filled with shape memory wire are 10.8 Mpa and 10.7 Mpa. So SMA hybrid composite specimens have lower force respect to Composite specimens. It may for weak interface between shape memory wire and matrix due to the discrepancy in compatibility of materials.
