Open AccessStudy of Failure Analysis of a Fracture Crankshaft Pulley Used on a Truck Engine
Author(s) -
Husaini Husaini,
T. E. Putra,
S. Novriandika
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/739/1/012018
Subject(s) - crankshaft , pulley , finite element method , groove (engineering) , structural engineering , materials science , fracture (geology) , fracture toughness , stress (linguistics) , engineering , composite material , mechanical engineering , metallurgy , linguistics , philosophy
A pulley is a mechanism consisting of a wheel, with a groove between its two edges, which is fastened to a shaft. The belt usually passes along the groove of the pulley to give it the power of movement and rotation. In December 2016 there was a case of failure of the crankshaft pulley in a truck. This study aims to investigate the causes of fracture. Therefore, it was necessary to perform a failure analysis. Investigation methods included visual examination, scanning electron microscope analysis, chemical analysis of the material and mechanical tests. A finite element analysis (FEA) was also performed to quantify the stress intensity factor (K I ) distribution in the crankshaft pulley that is near the crack tip. From the finite element analysis, it was found that K 1 was greater than the fracture toughness (K IC ) of the material. Therefore, the propagation of crack occurs from the initial crack until final failure.