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rajeshIron

Asked: January 19, 2021In: Physical Metallurgy & Heat treatment

How to increase Elastic modulus and yield strength of a metal?

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Askmemetallurgy Official

Asked: June 22, 2020In: Physical Metallurgy & Heat treatment

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.

Poll Results

28.57%(A)The fibre will undergo brittle fracture ( 4 voters )

0%(B)The fibre will undergo plastic deformation, but not fracture

71.43%(C)The fibre will undergo elastic deformation, but not fracture ( 10 voters )

0%(D)The fibre will undergo buckling

Based On 14 Votes

Participate in Poll, Choose Your Answer.

<img alt='Askmemetallurgy Official' title='Askmemetallurgy Official' width='42' height='42' data-srcset='https://askmemetallurgy.com/wp-content/uploads/2020/04/20200419_001906-1-42x42.png 1x, https://askmemetallurgy.com/wp-content/uploads/2020/04/20200419_001906-1-84x84.png 2x' data-src='https://askmemetallurgy.com/wp-content/uploads/2020/04/20200419_001906-1-42x42.png' class='avatar avatar-42 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=='><noscript><img class='avatar avatar-42 photo' alt='Askmemetallurgy Official' title='Askmemetallurgy Official' width='42' height='42' srcset='https://askmemetallurgy.com/wp-content/uploads/2020/04/20200419_001906-1-42x42.png 1x, https://askmemetallurgy.com/wp-content/uploads/2020/04/20200419_001906-1-84x84.png 2x' src='https://askmemetallurgy.com/wp-content/uploads/2020/04/20200419_001906-1-42x42.png'>

Askmemetallurgy Official

Asked: June 11, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2019 Q22. A material, made up of alternating layers of metal A and B, is loaded as shown below. If the volume % of B is 25%, the elastic modulus (in GPa rounded off to one decimal) of the material is ____________. Given elastic moduli of A and B are 200 GPa and 100 GPa, respectively.

GATE MT 2019 Q22. A material, made up of alternating layers of metal A and B, is loaded as shown below. If the volume % of B is 25%, the elastic modulus (in GPa rounded off to one decimal) of the material is ____________. Given elastic moduli of A and B are 200 GPa and 100 GPa, respectively.

<img alt='Askmemetallurgy Official' title='Askmemetallurgy Official' width='42' height='42' data-srcset='https://askmemetallurgy.com/wp-content/uploads/2020/04/20200419_001906-1-42x42.png 1x, https://askmemetallurgy.com/wp-content/uploads/2020/04/20200419_001906-1-84x84.png 2x' data-src='https://askmemetallurgy.com/wp-content/uploads/2020/04/20200419_001906-1-42x42.png' class='avatar avatar-42 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=='><noscript><img class='avatar avatar-42 photo' alt='Askmemetallurgy Official' title='Askmemetallurgy Official' width='42' height='42' srcset='https://askmemetallurgy.com/wp-content/uploads/2020/04/20200419_001906-1-42x42.png 1x, https://askmemetallurgy.com/wp-content/uploads/2020/04/20200419_001906-1-84x84.png 2x' src='https://askmemetallurgy.com/wp-content/uploads/2020/04/20200419_001906-1-42x42.png'>

Askmemetallurgy Official

Asked: April 11, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2016 Q.51 For a polymer reinforced with 40 vol.% glass fiber, the elastic modulus (in GPa) along the transverse direction is ______. [Eglass fiber = 70 GPa; Epolymer = 3.5 GPa]

Poll Results

54.55%(A) 5.6 ( 6 voters )

9.09%(B) 8.1 ( 1 voter )

27.27%(C) 30.1 ( 3 voters )

9.09%(D) 43.4 ( 1 voter )

Based On 11 Votes

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