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This project has designed a material treatment process to extend the lifespan of extrusion augers used by the social enterprise Appropriate Energy Saving Technologies (AEST) in Uganda. AEST uses an extruder machine to recycle agricultural waste into charcoal briquettes that they sell to low-income families. The auger components wore down quickly and needed a hardening process to remain useful for...
Friction and wear study of sliding surfaces plays a prominent role in the development of materials for various applications. The development of a low-cost multipurpose reciprocating tribometer at constant sliding speed to study the tribological properties of a material under dry, wet and high temperature conditions is presented in this paper. The tribometer has the ability of changing its stroke length...
This paper presents a rotary MEMS ball bearing with an integrated silicon ball cage. The device is a deep groove radial ball bearing consisting of steel balls encapsulated between two micromachined silicon wafers. The silicon ball cage is released from the bulk silicon substrate during fabrication. The objective was to show that a simple caged bearing design provides reliable motion at both high and...
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