Question
a.
In a thin spherical shell under internal pressure, hoop stress is equal to the half of axial stress.
b.
Thermoplastic material does not follow Hooke's law of elasticity.
c.
Components under longitudinal compression is called 'struts' and the load under which strut fails is called crippling or buckling load.
d.
At low temperatures (sub-zero) in pressure vessels, the ductility of metal diminishes and brittle fracture occurs while at high temperature in pressure vessels, embrittlement of material may take place.
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