Reliability-based maintenance scheduling of hydraulic system of rotary drilling machines

Rahimdel, Mohammad Javad; Ataei, Mohammad; Khalokakaei, Reza; Hoseinie, Seyed Hadi

doi:10.1016/j.ijmst.2013.08.023

Cited by 34 publications

(19 citation statements)

References 3 publications

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“…In recent years, the safety and reliability of complicated electro-mechanism systems such as power plant, transmission, and hydraulic machinery have aroused wide concern. [1][2][3][4][5] Actually, there are various issues in complex system reliability, 6 as it is hard to determine due to the different quantitative analyses of the reliabilities of its components.…”

Section: Introductionmentioning

confidence: 99%

Oil-based maintenance interval optimization for power-shift steering transmission

Zheng

Liu

et al. 2018

Advances in Mechanical Engineering

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The concentration of micron-size particles in used oil is generally obtained by atomic emission spectrometry. These accurate results can be considered as the most important index for real-time reliability evaluation including failure prediction and residual life assessment of power-shift steering transmission in tracked vehicles. Stochastic process and especially Wiener process can be applied in processing the oil spectral data. In this article, 50 used oil samples in total were collected and analyzed in sequence which covered 250 motor hours. The eigenvalue and mean value of elemental concentration in those samples were also revealed by linear regression analysis. Then, the increasing trends and the first hitting times for indicating elements were solved by simulating stochastic differential equations, which were based on the positive drift Wiener process. Comparing to the existing conditional maintenance time, the first hitting time increased about 27 motor hours more (13.7%). The results show that the maintenance frequency can be decreased by a longer time and finally can increase the cost-effectiveness ratio of maintenance.

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Section: Introductionmentioning

confidence: 99%

Oil-based maintenance interval optimization for power-shift steering transmission

Zheng

Liu

et al. 2018

Advances in Mechanical Engineering

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“…Many studies have been performed using the statistical analysis method in the reliability analysis of tunneling and civil engineering equipment. The reliability, availability, and maintainability analysis of EPB were discussed [21,22]. In order to model the EPB reliability, the device is divided into five separate subsystems including mechanical, electrical, hydraulic, pneumatic, and hydro subsystems in a series configuration.…”

Section: Statistical Distributions and Fitting Methodsmentioning

confidence: 99%

An Overview of the Reliability Analysis Methods of Tunneling Equipment

Ahmadi¹,

Hajihassani²,

Moosazadeh³

et al. 2020

TOBCTJ

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The absolute prevention of damage occurrence is not possible, thus reducing the probability of failure in a system and its impact is very important regarding the operation of a whole system. A failure in a system or in its subsystems makes negative results such as the stop in the production process, rising labor costs, and increasing the cost of maintenance. Reliability, in recent years, is mentioned as one of the most significant aspects of the quality of goods and services. In the past, reliability concerned sensitive and complex industries such as military, nuclear, and aerospace where the lack of their reliability could cause irreparable damage to the entire system. However, today it has become a universal concern. Tunneling equipment has grown in size and complexity and therefore, lack of reliability may cause massive costs to this equipment. Therefore, reliability determination in order to identify the components and subsystems with low reliability is essential. The aim of this study is to review the methods of tunneling equipment reliability analysis including statistical analysis, failure mode and effects analysis, Markov and fault tree methods. In addition, previous available research on the reliability analysis of tunneling equipment is presented.

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“…There are a number of techniques that have been successfully used to analyze the reliability and the maintainability of the system. For example, Rahimdel (2013) performed reliability and maintainability analysis of the pneumatic system of the rotary machine. This research confirms the importance of reliability analysis to ensure safe and reliable operation of the system.…”

Section: Introductionmentioning

confidence: 99%

A reliability-based preventive maintenance methodology for the projection spot welding machine

Ulugbek¹,

Sheng²,

Xiao³

et al. 2018

10.5267/j.msl

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An effective operations of a projection spot welding (PSW) machine is closely related to the effectiveness of the maintenance. Timely maintenance can prevent failures and improve reliability and maintainability of the machine. Therefore, establishing the maintenance frequency for the welding machine is one of the most important tasks for plant engineers. In this regard, reliability analysis of the welding machine can be used to establish preventive maintenance intervals (PMI) and to identify the critical parts of the system. In this reliability and maintainability study, analysis of the PSW machine was carried out. The failure and repair data for analysis were obtained from automobile manufacturing company located in Uzbekistan. The machine was divided into three main sub-systems: electrical, pneumatic and hydraulic. Different distributions functions for all subsystems was tested and their parameters tabulated. Based on estimated parameters of the analyzed distributions, PMI for the PSW machines sub-systems at different reliability levels was calculated. Finally, preventive measures for enhancing the reliability of the PSW machine sub-systems are suggested.

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Reliability-based maintenance scheduling of hydraulic system of rotary drilling machines

Cited by 34 publications

References 3 publications

Oil-based maintenance interval optimization for power-shift steering transmission

Oil-based maintenance interval optimization for power-shift steering transmission

An Overview of the Reliability Analysis Methods of Tunneling Equipment

A reliability-based preventive maintenance methodology for the projection spot welding machine

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