Describe the enabling materials property of each of the following and why it is so:
(a) silica tiles for the space shuttle;
(b) steel for I-beams in skyscrapers;
(c) a cobalt chrome molybdenum alloy for hip implants;
(d) polycarbonate for eyeglass lenses; and
(e) bronze for sculptures.
Answer (1)
(a) Silica tiles (space shuttle):Low thermal conductivity – resists extreme heat during re-entry.(b) Steel (I-beams):High strength and toughness – supports heavy loads in skyscrapers.(c) Co-Cr-Mo alloy (hip implants):Biocompatible and wear-resistant – safe and durable inside the body.(d) Polycarbonate (eyeglass lenses):Impact-resistant and clear – protects eyes and gives sharp vision.(e) Bronze (sculptures):Castable and corrosion-resistant – great for detailed, long-lasting art.
