This study explored the effect of fibre orientation on mechanical properties Betel Nut (Areca palm) stem fibres (BNSF)-reinforced laminated polyester composites. Composites are fabricated by hand lay-up method with 15% (vol.) loading and 0°/90°/0° −45°/0°/45° orientations. The composites determined testing as per ASTM standards revealed that composite strengths vary significantly orientation. tensile, flexural, impact found 58.19 MPa, 153.96 25.68 kJ/m2, respectively, for orientation, which...

Many researchers have recently become interested in phase change material (PSM) for passive cooling of electronic equipment. The performance PCM is enhanced by using fins as thermal conductivity enhancers (TCE). For a heat flux 20,000 W/m2, three-dimensional numerical (transient) analyses were conducted pin (Circular) and conical-shaped with without holes dimples on the surfaces to investigate transfer natural convection. Paraffin wax was used within fins' spaces keeping 9% volume 91% total...

The current research is directed to observe, assess, and evaluate the physical, mechanical, thermal properties of fabricated composite. In this study, rattan bamboo fiber have been used as woven mat for reinforcing agent in polyester matrix. were investigated loading 0, 10, 20, 30 wt.% with a uniform ratio (Rattan: Bamboo = 1:1). Better mechanical observed tensile, flexural, impact hardness test. tensile strength, impact, are increased from raw by 8.64 %, 413.88 12.79 % respectively. On...

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Due to microscale size and infinitesimal stiffness, the undesirable surface external forces influence mechanical behaviors of microstructures. It hinders MEMS functions, degrades reliability, acts as a disturbance. Since functions based on microstructure behaviors, therefore, their quantification in microstructures is vital. However, direct costly, difficult, requires controlled environment unique experimental setups. Analytical assessment also complex because multi-physics involvement,...

The effects of fiber orientation and volume fraction on the mechanical thermal properties laminated jute reinforced polyester composite are investigated. sheets thickness 4.0 mm fabricated by hand lay-up method using three stacks fibers four different orientations (0°/90°/0°, 90°/0°/90°, 45°/0°/-45° −45°/90°/45°). For each orientation, two-volume fractions 20% 30% used. such as tensile, flexural, impact strength, modulus toughness elasticity, hardness composites evaluated testing per ASTM...

Researches have already been focused on renewable fibre as one of the reinforcements in composite materials during past few years. In this research, locally available inexpensive natural fibres termed 'Luffa Cylindrica' (sponge-gourd fibre) and 'Areca Catechu' (betel nut used reinforcing to explore property variation reinforced hybrid polyester composites. The nut:sponge gourd = 1:1) are mixed within resin maintaining a uniform ratio. Four level loadings (5%, 10%, 15% 20%) considered...

ABSTRACTThe main purpose of this research is to observe the effect alkalisation rattan, bamboo fibre, and eggshell particles addition in fabrication hybrid polyester laminated composite. A 5% NaOH treatment fibres was conducted, added The FTIR analysis done reveal presence nanol, thermal stabilities were evaluated by TGA, DTG DTA. Furthermore, water absorption biodegradability composite also investigated. Mechanical properties tested with compatible ASTM standards. treated 30 wt.% fibre-...

The reaction forces at the tungsten support probes of a platinum microwire are determined by numerical analysis for different push-pull sliding velocities and contact pressures. Finite Element Analysis (FEA) tool ANSYS Workbench is used to evaluate stresses, deformations microwire. nonlinear formulations implemented ensure that maintained with during motion, transfer frictional between surfaces without penetration separation. found independent velocity vary normal pressure. results in...

Fluid flow in the lid driven cavity is a well-known phenomenon realm of fluid and heat transfer. Different shapes such as square, circular, trapezoidal, hexagonal have already been studied. However, most parametric analyses previously done using one specific shape design. The present study intends to generalize design for larger range applications starting from selection form due enhancement transfer inside that selected different boundary conditions. Numerical studies finite element solver...

A leaf spring is a simple form of commonly used for the suspension system in heavy duty vehicles which originally called laminated or carriage spring. It performs isolation task transferring vibration due to road irregularities passenger's body goods transported on it. The advantage over helical that ends have been guided along definite path as it deflect act structural member addition an energy absorbing device. Increasing competition and innovations automobile sector, tends modify existing...

High numbers of workplace casualties and injuries are reported each year in Bangladesh due to explosion the boiler rice husking mills, as well other industries including garments factories. Rice mills using locally made steam boilers, which fabricated steel plate obtained from ship breaking yard not equipped with standard safety devices fittings. The motivation this work is find causes those boilers provide some modifications reduce casualties. In regard, rural area inspected evaluate...