Sunday, February 16, 2020
Find 4 examples of failure due to creep that are relevant to the Essay
Find 4 examples of failure due to creep that are relevant to the transport industries - Essay Example The spring was subjected to the vehicleââ¬â¢s weight and initially underwent plastic deformation as the strain became higher. The strain rate reduces with time and levels out. Under effects of its operating environment (on average 480à °K), the strain rate increased exponentially leading the spring to fracture. The spring actually failed at the third stage of creep failure. The melting point of the material is 265à ° C (538à °K) as noted by Turner (2001) and McCrum, Buckley, and Bucknall (2003). The ratio of operating temperature to melting point is 0.89. 2. Steam Pipe Failure The steam pipe of a locomotive failed as a result of creep in Uganda. The material used for making the steam pipes was austenitic steel. The working temperature of the tubes was set at about 6000C (873à °K) and was subjected to high pressures, about 24.1MPa. The steam pipe burst as a result of creep failure leading to the emission of steam in the environment. Given that working temperature at time of bur st was about 830à °K, the ratio of operating temperature to melting point is 0.95. 3. Aero Engine Turbine Blade Failure The turbine blade for a fighter plane was fractured as a result of creep failure (Tauqir & Khan 2002).
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