Exploration of reliability algorithms using modified Weibull distribution: application on gas turbine

Reliability analysis of gas turbine engine by means of bathtub‐shaped failure rate distribution

“…Depending on the availability of data, the MLE is preferred, however, it is generally considered difficult to apply as it involves numerical iteration for parameter estimations . Conventional method to estimate Weibull parameters is to plot failure data on Weibull probability paper . In the current study, both MLE and LSM are employed, and comparison is made based on the performance measure of the root mean square error (RMSE).…”

“…In addition, based on historical failure data of gas turbines, maintenance plans can be modified to attain better reliability and availability. However, considering the economical aspect, reliability for industrial plant has now become a major challenge . The increased focus on reliability and maintenance to reduce cost has driven the modeling and analysis of repairable systems .…”

“…The increased focus on reliability and maintenance to reduce cost has driven the modeling and analysis of repairable systems . That said, the understanding of failure behavior and reliability analysis of gas turbine is a vital aspect . Hungund and Patil compared exponential and Weibull distribution for reliability analysis using operational data of thermal power generating units and found the Weibull distribution to be more appropriate for the studied system.…”

“…The inputs of DRCM process are the failures that have been diagnosed and prognosis results, whereas outputs are maintenance strategies that are determined by developed DRCM decision techniques depending on the operator choice of either maximum availability or the lowest cost of maintenance. Djeddi et al used Weibull distribution for reliability analysis based on failure data of gas turbine. The plant was installed for transportation application in an harsh environment in Algeria with frequent sandstorms and an average humidity of 20%.…”

Faults detection in gas turbine rotor using vibration analysis under varying conditions

“…Gas turbines are the most important pivotal rotating machines belonging to the family of internal combustion engines that are used intensively in oil and gas industrial plants. Indeed, it is used to achieve the main function of generating mechanical energy in form of shaft rotation from kinetic energy of gases produced in the combustion chamber (Djaidir et al, 2015(Djaidir et al, , 2016Djeddi et al, 2015Djeddi et al, , 2016Eshati et al, 2013;Jurado and Carpio, 2006;Kim et al, 2011). However, these machines are subject to some phenomena inducing important vibrations that can be very critical to their mechanical state.…”