A unidirectional E-glass/epoxy lamina is securely attached to rigid supports on both ends in two different ways as shown in Figure 5.19. In Figure 5.19a, the fiber direction is perpendicular to the...

A unidirectional E-glass/epoxy lamina is securely attached to rigid supports on both ends in two different ways as shown in Figure 5.19. In Figure 5.19a, the fiber direction is perpendicular to the rigid supports, and in Figure 5.19b, the  fibers are oriented parallel to the rigid supports. The lamina is to be heated by the amount ΔT in both cases. Using the properties in Tables 2.2,

4.1, and 5.3, determine the maximum temperature increase ΔT that the composites can withstand in both Figure 5.19a and b, according to the maximum stress criterion. Based on the maximum service temperatures for typical epoxies in Table 5.1, what can you say about the practical limits on ΔT in these cases?