Why is the transverse modulus of carbon fibers lower than their longitudinal modulus,while for the glass fibers these two properties are the same?
2007-05-06 17:05:27 · 2 answers · asked by Afshin 1 in Science & Mathematics ➔ Engineering
Because carbon fibers are made of carbon chains (like cotton twine) while glass fibers are amorphous (uniform in all directions)
2007-05-06 17:09:23 · answer #1 · answered by Mike1942f 7 · 0⤊ 0⤋
Glass is an isotropic, amorphous material; its properties are the same in every direction because it is non-crystalline.
Carbon fibers, on the other hand, composed on long chains of carbon atoms, loosely attached to each other. The strong interatomic forces are along the chain- along the fiber- and in the other direction the attractive forces are weaker, making it less stiff.
2007-05-07 00:12:44 · answer #2 · answered by DT3238 4 · 0⤊ 0⤋