statement of problem: fracture strength of a denture base resin is of great concern, and many approaches have been used to strengthen acrylic resin dentures. purpose: the aim of this study was to measure the transverse strength of a heat polymerized acrylic resin, after reinforcement with metal wire and two types of glass fibers. materials and methods: forty rectangular specimens (65.0×10.0×3.3...

The objective of this study was to experimentally evaluate the fatigue limit 90° unidirectional carbon fiber reinforced plastic (CFRP) laminates. very high-cycle properties specimens were evaluated using ultrasonic and electromagnetic testing machines. Ultrasonic tests conducted obtain under giga-cycle regime. specimen geometry designed resonate at 20 kHz, consisted CFRP laminate a metal tab co...

The efficient use of fiber reinforced polymer matrix composites in load-carrying structures requires detailed analyses to assess their mechanical performance, cost, and weight saving aspects. To accurately analyze the cyclic fatigue life of composite laminates, the influence of the physical non-linearity of the unidirectional lamina in the cyclic fatigue life analysis was examined using enhance...

With the increasing requirements of automotive lightweighting, metal/CFRP laminates are increasingly used. In this paper, Al/CFRP were prepared using an integrated hot press curing method, and optimum conditions determined single-lap shear test at 130 °C for 45 min. The effects fiber lay-up, forming speed, metal layer thickness on bending springback investigated V-shaped Abaqus finite element a...

Recent research on variable stiffness laminates have shown both numerically and experimentally that further improvement the buckling performance is possible by incorporating overlaps result in thickness profiles. We present concept of overlap-stiffened designs take advantage non-linear coupling between tow steering local thickness, allowing embedded regions higher into individual plies a variab...

A computational study is performed to determine the contribution to ultrasound attenuation in carbon fiber reinforced polymer composite laminates of linear elastic scattering by matrix micro-cracking. Multiple scattering approximations are benchmarked against exact computational approaches. Results support linear scattering as the source of observed increased attenuation in the presence of micr...

The use of fiber reinforced materials such as randomly-oriented strands has grown in recent years, especially for manufacturing of aerospace composite structures. This growth is mainly due to their advantageous properties: they are lighter and more resistant to corrosion when compared to metals and are more easily shaped than continuous fiber composites. The resistance and stiffness of these ma...

This paper deals with free vibration analysis of thick Laminated curved panels with finite length, based on the three-dimensional elasticity theory. Because of using two-dimensional generalized differential quadrature method, the present approach makes possible vibration analysis of cylindrical panels with two opposite axial edges simply supported and arbitrary boundary conditions including Fre...