Composite materials are now being utilized extensively in sp

Composite materials are now being utilized extensively in sports equipment. (a) List at least four different sports implements that are made of, or contain composites. (b) For one of these implements, write an essay in which you do the following: (1) Cite the materials that are used for matrix and dispersed phases, and, if possible, the proportions of each phase; (2) note the nature of the dispersed phase (i.e., continuous fibers); and (3) describe the process by which the implement is fabricated.

Solution

a) There are a number of different sports implements that employ composite materials1. Bicycle frame; 2. Tennis rackets; 3. Tennis bat; 4. Skis; 5. fishing rods; 6. baseball and softball bats; 7. hockey sticks.

b) Many composite materials are composed of just two phases; one is termed the matrix, which is continuous and surrounds the other phase, often called the dispersed phase. The properties of composites are a function of the properties of the constituent phases, their relative amounts, and the geometry of the dispersed phase. “Dispersed phase geometry” in this context means the shape of the particles and the particle size, distribution, and orientation;