Chapter 12 Case Studies: Hybrids Materials Selection in Mechanical Design, 4th Edition © 2010 Michael Ashby

Metal Matrix Panel Materials Selection in Mechanical Design, 4th Edition © 2010 Michael Ashby

Figure 12.1 Possible magnesium-matrix composites. The lozenges show the areas bracketed by the upper and lower bounds of Table 12.2. The green areas within them extend up to a volume fraction of 0.5. Materials Selection in Mechanical Design, 4th Edition © 2010 Michael Ashby

Flexible Conductors and Percolation Figure 12.2 When conducting particles or fibers are mixed into an insulating elastomer, a hole in the material-property space is filled. Carbon-filled butyl rubbers lie in this part of the space. Materials Selection in Mechanical Design, 4th Edition © 2010 Michael Ashby

Extreme Combinations of Thermal and Electrical Conduction Materials Selection in Mechanical Design, 4th Edition © 2010 Michael Ashby

Figure 12.3 Two alternative configurations of copper and polyethylene, shown here in two dimensions but easily generalized to three. The one on the left has high electrical conductivity but low thermal conductivity; the one on the right has the opposite. Materials Selection in Mechanical Design, 4th Edition © 2010 Michael Ashby

Figure 12.4 Two alternative hybrid configurations of copper and polyethylene give very different combinations of thermal and electrical conductivity, and create new “materials” with properties that are not found in homogenous materials. Materials Selection in Mechanical Design, 4th Edition © 2010 Michael Ashby