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 \(\Delta T\) in both cases. Using the properties in Tables 2.2, 4.1, and 5.3, determine the maximum temperature increase \(\Delta T\) 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 \(\Delta T\) in these cases?

Transcribed Image Text:

(a) Rigid support (b) Rigid support FIGURE 5.19 2 Rigid support 2 Rigid support