in recent years, the application of composite materials in aircraft and space vehicle structural components has become increasingly popular. preventing failure of composite structural systems has been an important issue in engineering design. due to the lack of through-the-thickness reinforcement, structures made from laminated composite materials and adhesively bonded joints are highly suscept...

Three-dimensional residual stress mapping of an aluminum 2024-T3 arcan specimen, butt-welded by the friction stir technique, was performed by neutron diffraction. Results indicate that the residual stress distribution profiles across the weld region are asymmetric with respect to the weld centerline, with the largest gradients in the measured residual stress components occurring on the advancin...

In this article, the yielding and plastic flow of a rapid-prototyped ABS compound was investigated for various plane stress states. The experimental procedures consisted multiaxial tests performed on an Arcan device specimens manufactured through photopolymerization. Numerical analyses were employed in order to determine yield points each state configuration. results used calibration Hosford cr...

The shear strength of a 4-ply unidirectional composite laminate consisting of carbon fibers (T650-35) and a polyimide matrix (HFPE-II-52) was measured over a temperature range of 25 to 315C. The tests were performed using a Iosipescu test sample, modified to provide a more uniform shear stress distribution across the gauge section and loaded with an Arcan type test fixture. The test specimen de...

In the current days, fuel cells are more preferred to generate electricity due their positive sides. Because, if they use hydrogen and oxygen as fuel, only produce electricity, heat, water. This property of is significant because preventing environmental chemical pollution so, contribute environment positively. addition, have points such no moving or rotating parts. Therefore, required for mech...

Randomly oriented short fiber reinforced sheet molding compound composites (SMC-R) are among the most commonly used for automotive and many non-automotive structural applications. Many studies have reported static fatigue properties of SMC-R under uniaxial stress conditions. However, there applications in which they may be subjected to biaxial conditions their not been literature. The current s...

A meso-scale damage modelling framework for composite laminates is assessed against multi-axial experimental data obtained from specimens subjected to combined tension/compression and shear loading using a modified Arcan fixture (MAF). Two made unidirectional carbon fibre-reinforced epoxy plies of different thickness are considered investigate the ply effect on behaviour open-hole specimens. In...

Structural health monitoring (SHM) is an emerging technology with great potential in structural diagnosis and prognosis. SHM systems can be passive or active. Active SHM systems rely on structural interrogation using active sensors (transducers) that can transmit and receive ultrasonic Lamb waves traveling at large distances in the structural material. Piezoelectric-wafer active sensors (PWAS) ...