Replacement time optimization of bucket hydraulic cylinder components in the mining excavator of "xYZ" company using power law process model

The bucket hydraulic cylinder, which is a part of the large excavator, is a repairable part, so the failure of the bucket hydraulic cylinder parts can be overcome by regular repair and replacement. The problem is that you can't randomly decide when to replace the bucket's hydraulic cylinder component. This is because failures can lead to cost overruns. Therefore, this study optimizes the replacement time of bucket hydraulic cylinder components in order to minimize the cost of component failure. Model the collapse of a hydraulic cylinder vane component using the power law process model, which is a model that follows a non-homogeneous Poisson process. Analysis found that the best time to replace a bucket hydraulic cylinder component is when the component has passed his 3,367 hours or when the component has failed his sixth time, whichever comes first. The expected cost of failure is equivalent to Rp. 24,229 per hour meter or Rp. 78,429,273 per average time to replacement, or 3,237 hourmeters. The replacement time resulting from this optimization reduces the cost of failure by 6.81%.