FAILURE ANALYSIS OF MECHANICAL SHAFT
I will put the dimension here
Abstract
Cases of component failure from previous researchers encourage the analysis of the causes of shaft failure according to the operational conditions of production machining as an urgent matter to find the problem. The purpose of the analysis is to obtain the causes of shaft failure in production facility applications. The analysis method includes tracing the results of previous shaft research, studying the methods of testing mechanical properties, composition, hardness, simulation, stress concentration, torsional stress, bending stress, defects, cracks, scratches, inclusions, voids, corrosion, wear, heat treatment, comparison between the results, discussion and conclusions. Implementation of shaft analysis in machining, production facility construction, and research/test equipment. The conclusions obtained include: the crankshaft of the wheel loader diesel engine after operating for 4800 hours, broke at the fifth crankshaft with diameter 82 mm, the actual tensile strength of the shaft 832.3 MPa is still < DIN 1.7225 standard (42CrMo4) worth 900-1100 MPa; diameter 55.5 mm condensate pump shaft of SS 416 was broken, due to torsional fatigue from the sharp edge of the outer surface of the shaft where MnS inclusions were as a design error and MnS inclusions near the shaft surface as a metallurgical error; and so on.
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