Askmemetallurgy Latest Questions
GATE MT 2018 Q28. A glass fibre of 5 micron diameter is subjected to a tensile stress of 20 MPa. The surface energy and elastic modulus of this material are 0.3 Jm^-2 and 70 GPa, respectively. Pick the correct answer based on the information provided above: Note: The glass fibre contains a population of flaws of different lengths.
20.69%(A)The fibre will undergo brittle fracture ( 6 voters )
17.24%(B)The fibre will undergo plastic deformation, but not fracture ( 5 voters )
62.07%(C)The fibre will undergo elastic deformation, but not fracture ( 18 voters )
0%(D)The fibre will undergo buckling ( 0 voters )
Based On 29 Votes