It is necessary to select a ceramic material to be stressed using a three-point loading scheme (Figure 12.32). The specimen must have a circular cross section and a radius of 2.5 mm (0.10 in.), and must not experience fracture or a deflection of more than 6.2 × 10-2 mm (2.4 × 10-3 in.) at its center when a load of 275 N (62 lbf) is applied. If the distance between support points is 45 mm (1.77 in.), which of the materials in Table 12.5 are candidates? The magnitude of the center point deflection may be computed using the equation supplied in Problem 12.42.