Experimental characterization of traditional composites manufactured by vacuum‐assisted resin‐transfer molding

Abstract

ABSTRACT:The primary purpose of this study is to investigate the anisotropic behavior of different glass-fabric-reinforced polyester composites. Two commonly used types of traditional glass fabrics, woven roving fabric and chopped strand mat, have been used. Composite laminates have been manufactured by the vacuum infusion of polyester resin into the fabrics. The effects of geometric variables on the composite structural integrity and strength are illustrated. Hence, tensile and three-point-bending flexural tests have been conducted at different off-axial angles (0, 45, and 908) with respect to the longitudinal direction. In this study, an important practical problem with fibrous composites, the interlaminar shear strength as measured in short-beam shear tests, is discussed. The most significant result deduced from this investigation is the strong correlation between the changes in the interlaminar shear strength values and fiber orientation angle in the case of woven fabric laminates. Extensive photographs of fractured tensile specimens resulting from a variety of uniaxial loading conditions are presented. Another aim of this work is to investigate the interaction between the glass fiber and polyester matrix. The experiments, in conjunction with scanning electron photomicrographs of fractured surfaces of composites, are interpreted in an attempt to explain the interaction between the glass fiber and polyester.

Unsaturated polyester/E-glass fiber composites made by vacuum assisted compression resin transfer molding

“…The strengths in ± 45 ° are 1360 kgf/cm 2 and slightly greater than in the main directions. The results disagree with the study [24] . This may be because the different interlaced and braided structure of the fabric is present between them.…”

Property enhancement of kenaf fiber composites by means of vacuum-assisted resin transfer molding (VARTM)

“…The vacuum-assisted resin transfer molding (VARTM) technology is well established for the fabrication of highperformance composites based on synthetic fiber, such as fiberglass or carbon fibers (Moriia et al 2001;Shih et al 2001;Cecen and Sarikanat 2008;Halimi et al 2012;Menta et al 2013). Generally, the VARTM technology is suitable to produce large-scale components but not small samples.…”

Tensile Property of Carbon Reinforced Epoxy Composites for Different Directions

“…For metals and composites, tensile tests have been used as a standard testing to evaluate the mechanical properties like tensile and Young's modulus and compare qualitatively with different materials. The mechanical property of composites show different characteristics based on types of fiber/matrix (Ma et al, 2017;Ma et al, 2018;Turla et al,2014), Nano-addition (Agarwal et al, 2014;Zhang et al, 2019;Xu & Hoa, 2008), interface bonding (Liu et al, 2014;Li et al,2013), applied methods (Sahin, 2021;Cecen &Sarıkant, 2008), stacking sequence (Ary Subagia et al, 2014;Zhang et al, 2012;Yusuff et al, 2021), orientation effect (Rahmani et al, 2012;Kaleemulla & Siddeswarappa,2010;Agrawal & Bhattacharya, 2021;GuruRaja & HariRao,2013) and characterization (Shokrieh &Omidi, 2009;Paive et al, 2006;Cecen & Sarıkanat, 2008;Pandy et al, 2011) in making composites.…”