Friction Coefficient and Compression Behavior of Particle Reinforced Aluminium Matrix Composites

Metal matrix composites (MMCs) are materials used in a large range of engineering applications. In this paper, the relatively low-cost stir casting is evaluated with the use for Silisyum Carbite (SiC) as reinforcement and Al7075 alloy as matrix to produce MMCs with varied reinforcement from 10% to 18%. The produced composites were examined, and their wear behavior was investigated. The results showed that the mechanical properties of the MMCs decrease with the increase of the mass percentage of reinforcement and compression.

Specified Domain in Nu-Mu Interaction Diagram for Logical Judgment in Numerical Analysis on Compression Reinforced Concrete Members

A series of specified domains in Nu-Mu interaction diagram are proposed to determine optimal reinforcement schemes for rectangular RC column sections subjected to uniaxial eccentric load. These domains divide the area covered by interaction diagram into four regions of safety zone, compression-controlled zone, balanced failure zone and tensioncontrolled zone, which can help engineer to understand all possibilities of section failure under varied reinforcement scheme when they carried out a section design for columns with numerical analysis. With the physical information included in the diagram, the domains help to establish logical judgment between practical reinforcement schemes specified by the Chinese code (GB50010-2010) and corresponding load combination (Nu, Mu) in interaction diagram, and also provide physical interpretation on any calculated result of steel consumption.