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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.
28.57%(A)The fibre will undergo brittle fracture ( 4 voters )0%(B)The fibre will undergo plastic deformation, but not fracture71.43%(C)The fibre will undergo elastic deformation, but not fracture ( 10 voters )0%(D)The fibre will undergo buckling
Based On 14 Votes