Graphite is an excellent material for bipolar plates used in Proton Exchange Membrane (PEM) fuel cell due to its great chemical resistance, but the brittle nature makes it difficult to manufacture. Selective Laser Sintering (SLS) based on layer-by-layer manufacturing technology can fabricate graphite bipolar plates with complex gas flow channels. To improve the performance of bipolar plates inc...

Bicomponent fibers were wet-spun from soybean protein and poly(vinyl alcohol). The protein core of the spun bicomponent fiber was brittle and showed a high frequency of core breakage upon drawing. Our effort was then to study the soybean protein solution, with the aim of trying to understand the cause for fiber brittleness and to determine the optimum solution conditions for fiber spinning. The...

Geopolymers are known as high strength and durable construction materials but have a brittle fracture. In practice, this results in a sudden collapse at ultimate load, without any chance of preventing the breakdown of parts or of withstanding the stress for some time. Glass fiber usage as a total anisotropic shape acting as a compact structure component should hinder the fracture mechanism. The...

The process of the production a CF/Al-wire by pulling carbon fibers through an aluminum melt has at least 15 parameters. main parameters include power ultrasonic treatment, time contact fiber with matrix melt, and temperature. In addition, presence barrier coating on surface its thickness significantly affects properties resulting material. importance these is due to their direct effect chemica...

Abrasive Jet Machining is an Unconventional machining process in which the metal is removed from brittle and hard material in the form of micro-chips. With increase in need of materials like ceramics, composites, in manufacturing of various Mechanical & Electronic components, AJM has become a useful technique for micro machining. The present study highlights the influence of different parameter...

Ni–Mn–Ga polycrystalline alloy fibers with diameters of 33 μm are reported to exhibit significantly improved ductility and huge superelastic and shape memory strains in comparison to conventional brittle bulk polycrystalline alloys. Particularly, the recoverable strain of the Ni54.9–Mn23.5–Ga21.6 fiber can be as high as 10% at 40 ◦C. Such optimized behavior has been achieved by a suitable fabri...

Experiments were carried out to study the effects of impingement angle and particle velocity on the solid particle erosion behavior of Bagasse Fiber Reinforced Polymer Composites (BFRPCs). The erosive wear is evaluated at different impingement angles from 30° to 90° at four different velocities of 48, 70, 82 and 109 m/s. The erodent used is silica sand with the size range 150 – 250 m of irregul...

The objective of this study is to find significant differences in impact forces between continuous, discontinuous, and woven fiber type polyester composites with natural palm fibers out the description microfracture structure. This used experimental methods independent dependent variables. variables are type. Then, variable was forces. Based on results tests, show that from average score at con...

background: anti-angiogenic therapy is a crucial step in cancer treatment. the discovery of new anti-angiogenic compounds from marine organisms has become an attractive concept in anti-cancer therapy. because little data correlated to the pro- and anti-angiogenic efficacies of ophiuroidea, which include brittle star, the current study was designed to explore the anti-angiogenic potential of bri...