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In the traditional deep drawing process, a blank holder is required to press the blank over the die to prevent wrinkling and to control the material flow into the die cavity. But, this important to...

Composites are proven a better option for automobile, aerospace industry especially due o its specific strength to weight ratio. Aluminium metal matrix composites having its own advantages, stir ca...

Gears are known to be useful in rotating motion transfer or power transmission from small product to larger, used everywhere. It was initially metallic foundation but now the polymeric material gea...

The Hybrid composites are the emerging materials which uses two or more reinforced particles or fibres simultaneously. As potential applications of the composites, wood reinforced thermoplastic composites are commercially attractive for high volume applications, but their properties can be enhanced by adding Nano SiO2 particles. Wood powder and nano SiO2 were mixed with high density polyethylene as matrix material. Wood powder with fixed 5 wt. % and Nano SiO2 with varying weight % (3, 5, 7 wt. %) are reinforced in HDPE to manufacture composite materials by compression moulding process. Mechanical properties including tensile strength, flexural strength and Izod impact strength were evaluated and it was revealed that tensile strength and flexural strength were obtained maximum at 5 wt. % of Nano SiO2 and impact strength was obtained maximum at 3 wt. % of Nano SiO2.

A scale based upon the induction of antitumor cellular immune responses has been described which relates the in vivo mutagenic/carcinogenic potential of an environmental agent with that of ionizing radiation. Such a potential (radiation equivalency) has now been determined in rats for the gastrointestinal carcinogen 1,2-dimethylhydrazine as compared with the effects induced by X-irradiation of only the small intestine. The preliminary results suggest that such scales may be readily constructed based upon environmental immunology concepts which relate the potential hazard of an agent to be weighed alongside the maximum allowable population limits of ionizing radiation.