investigation on rolling bearing remaining useful life

However how to use the monitored information to evaluate the degradation of rolling bearings is a significant issue for its predictive maintenance and autonomic logistics This work presents a reliable health prognosis approach to estimate the health indicator (HI) and remaining useful life (RUL) of rolling 2017-11-30estimation of the remaining life of the damaged bearing In order to keep the machines performing at A machine running with a faulty bearing the rolling element comes across the defect and hits the edge of the defect thereby produce impulse in the signals to obtain useful diagnostic information [32 33] In highly transient signals

Remaining Useful Life Prediction for Aircraft Engine

2009-12-15requires early detection of a bearing defect but also the ability to predict bearing health conditions for all operational scenarios This paper summarizes a physics-based remaining useful life (RUL) prediction method developed in the DARPA Engine System Prognosis (ESP) program This investigation

2018-7-20An Ensemble Model for Predicting the Remaining Useful Performance of Lithium-ion Batteries Microelectronics Reliability special issue: Enabling Technologies for Sustainable Battery: Advances in Battery Reliability 53(6):811-820 2013

The primary focus of this investigation was to develop and test a real time monitoring system to monitor the health of the bearings during operation and alert the operator of the location of a pending bearing failure This system uses temperature as the monitoring parameter and does not estimate the remaining useful life after the initial

2020-8-20A thorough oil analysis can provide useful data to assist in diagnosing bearing or machine distress The usefulness of the analysis is directly related to the information requested as well as examine the remaining bearings in a troubled unit In a perfect world hydrodynamic bearings theoretically have an infinite life Equipment operators

A wind turbine creates electricity when wind flows across the turbine blade and spins the rotor The rotor is connected to a generator directly in a direct drive turbine or through a shaft and a series of gears (i e a gearbox) that speed up the rotation and allow for a physically smaller generator (see Figure 1) 15 This translation of aerodynamic force to rotation of a generator is what

Understanding data science: feature extraction with R

2018-5-21To collect the data into a format useful for further analysis I need to process the 2 156 time ordered source files into 4 files of bearing-specific data Each bearing file will contain 2 156 rows (one per source file) containing the timestamp and key features calculated from both the x and y axes

A wind turbine creates electricity when wind flows across the turbine blade and spins the rotor The rotor is connected to a generator directly in a direct drive turbine or through a shaft and a series of gears (i e a gearbox) that speed up the rotation and allow for a physically smaller generator (see Figure 1) 15 This translation of aerodynamic force to rotation of a generator is what

When the outer bearing fails the hub can just slip past the axle nut and remaining parts of the outer bearing In hubs with large outer bearings separation of the hub occurs when the oscillating hub causes the axle nut to be pulled off the axle like a bottle cap In other cases the axle nut is pulled off the axle ripping the threads out of

2009-12-9Nathan A Branch 1 Nagaraj K Arakere 1 Vaughn Svendsen 2 and Nelson H Forster2 Stress Field Evolution in a Ball Bearing Raceway Fatigue Spall ABSTRACT: The governing mechanisms of fatigue spall propagation in ball bearing inner raceways are investigated through the use of elastic-plastic finite element modeling X-ray diffraction and the visual

2007-1-4A useful parameter for determining the strength of subgrade material is the California Bearing Ratio (CBR) CBR values are indices of soil strength and swelling potential They represent the ratio of the resistance of a compacted soil to penetration by a test piston to penetration resistance of a standard material usually compacted crushed

2016-1-12to improve the fatigue life of the nut one study reported on an investigation to change the nut profile By placing a groove near the face of the nut and making the nut face concaved an improvement in the fatigue life of 25% was reported This approach has been used to improve the fatigue life of very large diameter bolts

Concurrent Estimation of Remaining Useful Life for Multiple Faults in an Ion Etch Mill " Practical Scheme for Fast Detection and Classification of Rolling-Element Bearing Faults Using Support Vector Machines " In-Situ Investigation of the Kinematics of Ply interfaces during Composite Manufacturing

2017-4-1The remaining useful life of a rolling bearing is defined as the available service time form the present moment to the moment it failed For example for a bearing at sampling point t 1 it failed at sampling point t 2 then remaining useful life of the bearing is calculated by t 2

Estimating Gear Fatigue Life

The fatigue failure analysis based on stress-life method is especially useful for a wide range of gear design applications and represents high-cycle applications adequately In particular the steel for gears requires a great variety of tests to define the fatigue strength versus the number of load cycles

Evaluation of the spall size of a radially loaded rolling-element bearing is required for the assessment of the bearing damage severity and estimation of its remaining useful life A new multi-body nonlinear dynamic model of the interaction between the rolling-element and a spalled outer race is presented The study focuses on the physics of rolling-element contact in a broader range of spall

Rolling contact fatigue (RCF) is a common cause of failure in tribological machine components such as rolling-element bearings (REBs) The two most dominant modes of RCF failure are surface originated pitting and subsurface initiated spalling both of which have been studied in this investigation Surface originated pitting is characterized by the initiation of a crack at a surface

2020-8-18Microelectronics Reliability is dedicated to disseminating the latest research results and related information on the reliability of microelectronic devices circuits and systems from materials process and manufacturing to design testing and operation The coverage of the journal includes the following topics: measurement understanding and analysis evaluation and prediction modelling

A multi-task deep learning model for rolling element-bearing diagnostics Ahmed Zakariae Hinchi Abstract CNC spindle signal investigation for the prediction of cutting tool health Jacob L Hill Paul W Prickett Roger I Grosvenor Comparison of Stochastic capacity estimation tools applied on remaining useful life prognosis of Lithium

A multi-task deep learning model for rolling element-bearing diagnostics Ahmed Zakariae Hinchi Abstract CNC spindle signal investigation for the prediction of cutting tool health Jacob L Hill Paul W Prickett Roger I Grosvenor Comparison of Stochastic capacity estimation tools applied on remaining useful life prognosis of Lithium

Rolling bearings are critical components in rotating machinery Their failure can result in unexpected downtime and productivity reduction Remaining useful life prediction of rolling bearing has aroused extensive attention since it can avoid failure risks and improve stability and security of operation This paper attempts to summarize various methods of bearing remaining useful life

The vibration analysis aims to extract features from the measurements in order to be used for fault detection and diagnosis Vibration response measurement is an important and effective technique for the detection of the defects in rolling element bearings The corresponding analysis methods operate in the time domain in the frequency domain and recently in the time-frequency domain

What happened On 24 October 2014 the Melbourne to Sydney XPT service ST24 was approaching Culcairn station when there was a severe vibration The driver stopped at the station and upon inspecting the train found that the axle had broken adjacent to the bearing box on the fourth passenger carriage

Abstract: Remaining useful life (RUL) prediction of rolling element bearings plays a pivotal role in reducing costly unplanned maintenance and increasing the reliability availability and safety of machines This paper proposes a hybrid prognostics approach for RUL prediction of rolling element bearings First degradation data of bearings are sparsely represented using relevance vector