In terms of today's physics, if it is transparent, then it is rigid and shatters. Doesn't matter whether it is/contains aluminum or not; it can't have the free electrons that make metals malleable, or those will gobble up all the light.
Doesn't necessarily mean it would be weaker than the non-transparent bits, of course. It might be perfectly valid to make the whole ship out of the window stuff and then just paint some bits over, as with Larry Niven's General Products hulls. But in Trek, we see windows shatter and we don't see walls shatter. So either the windows are an accepted weakness, or then the walls fail in some other fashion no later than the windows do.
Timo Saloniemi
Doesn't necessarily mean it would be weaker than the non-transparent bits, of course. It might be perfectly valid to make the whole ship out of the window stuff and then just paint some bits over, as with Larry Niven's General Products hulls. But in Trek, we see windows shatter and we don't see walls shatter. So either the windows are an accepted weakness, or then the walls fail in some other fashion no later than the windows do.
Timo Saloniemi