Reliability and Availability Models of Belt Drive Systems Considering Failure Dependence

Abstract

Conventional reliability models of belt drive systems in the failure mode of fatigue are mainly based on the static stress strength interference model and its extended models, which cannot consider dynamic factors in the operational duration and be used for further availability analysis. In this paper, time-dependent reliability models, failure rate models and availability models of belt drive systems are developed based on the system dynamic equations with the dynamic stress and the material property degradation taken into account. In the proposed models, dynamic failure dependence and imperfect maintenance are taken into consideration. Furthermore, the issue of time scale inconsistency between system failure rate and system availability is proposed and addressed in the proposed system availability models. Besides, Monte Carlo simulations are carried out to validate the established models. The results from the proposed models and those from the Monte Carlo simulations show a consistency. Furthermore, the case studies show that the failure dependence, imperfect maintenance and the time scale inconsistency have significant influences on system availability. The independence assumption about the belt drive systems results in underestimations of both reliability and availability. Moreover, the neglect of the time scale inconsistency causes the underestimate of the system availability. Meanwhile, these influences show obvious time-dependent characteristics.

Uji Kerja Mesin Pencacah Kulit Kelapa Berdasarkan Perbedaan Puli

“…Dalam sistem Transmisi sabuk, terdapat dua atau lebih puli yang dimanfaatkan, yaitu puli penggerak dan puli yang digerakkan (Arif Firdausi, 2013;Nugraha et al 2022). Dalam Penerapannya, mekanisme sabuk dan puli banyak digunakan pada industri otomotif seperti untuk berbagai mesin mobil, mesin penggerak, pada transmisi CVT kendaraan, dan alat alat pertanian (Shieh & Chen, 2002;Auzhen et al, 2019;Gao & Pan, 2019) Motor yang digunakan pada mesin pencacah kulit kelapa adalah motor bakar. Motor bakar merupakan suatu mesin yang mengubah energi dari energi kimia yang terdapat dalam bahan bakar menjadi energi mekanik pada poros motor bakar.…”

Using Failure and Repair Data for System Improvement in Plant Facilities

“…Meanwhile, Wang et al [2] and Choudhary et al [19] propose reliability and availability estimation using the Markov model approach to evaluate a cooling system's performance. Studies on reliability and availability were also carried out [22] in evaluating belt drive systems. Analysis of reliability, availability, and maintainability was carried out [1], [10], [15], [16], [17] in evaluating subsystem performance with case studies of different industries.…”

Evaluation of the Thermal Stability and Surface Characteristics of Thermoplastic Polyurethane V-Belt

“…The application of belts in different types of cars, machines and device drives is known and well described in the literature in the field of mechanical engineering [1][2][3][4]. A wide group of belts with round and V-sections as well as toothed and flat belts can be made of thermoplastic polymers [1,5] The condition for manufacturing belts made of this type of materials is their easy processing by extrusion at a temperature of about 200 • C, followed by cooling to obtain the desired shape of the belt.…”

“…The advantage of this solution is the ability to process belts multiple times. The introduction to the widespread use of new technical solutions requires the testing of the behavior of the belts under various conditions of use to obtain the required reliability and safety over the assumed life of the belt transmission [4]. Gao et al [4] discussed that the time-dependent reliability models, failure rate models and availability models of V-belt drive systems are developed based on the system's dynamic equations with the dynamic stress and the material property degradation taken into account.…”