Mathematical model for analysing availability of threshing combine machine under reduced capacity

Obtaining system availability in an engineering design is trickish and challenging, especially when there a reduction capacity; however, it supports maintainability. In this paper, mathematical model for finding the under reduced capacity has been proposed using Chapman Kolmogorov approach with help of transition diagrams associated various possible combinations probabilities. The paper observes most critical subsystem by selecting variable failure repair rates from different subsystems. It deals sensitivity analysis complex repairable threshing combined machine comprising subsystems series configuration consisting 21 device works total drum feeding Hooper work complete state, concave blower power. This study dealt uncertain data was analyzed analytically system. entire investigated analytically, indices such as extruder have computed reported. discovered that impact on some subsystems? overall availability.