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QUESTION 1: [Temperature Stresses] [14] A link in a jig that experiences changes in temperature is comprise of two bars in series. The steel component has a Young’s modulus, coefficient of thermal expansion, diameter, and length of 200 GPa, 12×10−6/�, 0.06 m and 10 meters, respectively, and is fixed rigidly on the end that is further from its joint with the other bar. The aluminium component has a Young’s modulus, coefficient of thermal expansion, inner (i) and outer diameters (o), and length of 80 GPa, 23×10−6/�, 0.03 and 0.08 m, and 15 meters, respectively, and has a gap of 15 mm between its free end and the jig housing. Determine: 1.1. The maximum temperature change that is allowed on the jig before the aluminium bar touches the housing. 1.2. The type and magnitude of stresses induced in the two bars if the jig housing is exposed to a temperature rise of 800C
achieve a hardness of 45 HRC.
water (liquid state) of 100C. The specific heat capacity of ice is 2090 J/kg0C and the specific latent heat
of fusion is 335 kJ/kg.
#339914 on Dec 2023