GATE MT 2016 Q.24 Aluminium powder having an apparent density of 810 kg.m^-3 is compacted in a cylindrical die at 600 MPa. The density of the as-pressed aluminium compact is 1755 kg.m^-3. If the height of the as-pressed compact is 12 mm, the fill height (in mm) required is ______.
GATE MT 2016 Q.24 Aluminium powder having an apparent density of 810 kg.m^-3 is compacted in a cylindrical die at 600 MPa. The density of the as-pressed aluminium compact is 1755 kg.m^-3. If the height of the as-pressed compact is 12 mm, the fill height (in mm) required is ______.
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Correct answer is 26 mm. Mass of powder is constant. mi=mf ⇒ ρiVi = ρfVf ρihi = ρf hf ⇒ hi = (ρf hf)/ρi On substitution, (1755×12)/ 810= 26 mm
Correct answer is 26 mm.
Mass of powder is constant.
mi=mf ⇒ ρiVi = ρfVf
ρihi = ρf hf ⇒ hi = (ρf hf)/ρi
On substitution, (1755×12)/ 810= 26 mm
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