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115 articles for “Bearings”
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Sensitivity of Bearings to Vibration: Its Effect on Ultrasonic Waves, Its Effect on Bearing Life
Abstract: High vibrations caused by various factors in the bearing of a car is a common problem in the automotive industry. Nowadays, the issue of reducing excess vibrations that cause bearing failure in industry has been considered by engineers and industry owners. By examining these vibrations and controlling the vibrations in the cars, it will increase the bearing life and reduce the number of out-of-program stops. The experiments were performed using …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 7, Issue 1, 2021 · pp. 26–30 Read article
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Essential of bearing in materials engineering
Abstract: Essentials of bearing have been to maintain lubricant film to prevent metal to metal contact and hence local welding of two surfaces. Tribological and mechanical properties have improved by powder metallurgy route of bearing fabrications. Alloyed non-ferrous plane bearings have better friction coefficients than pure metals. Betterment has appeared in babbit/ bronze particulate reinforced composites. Ni addition has improved performances of graphite-lead free tin bronze composite layers on surface of …
Published in International Journal of Metallurgy and Alloys · Vol. 5, Issue 2, 2019 · pp. 1–17 Read article
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Identification of Axial Air-Foil Bearings and Radial Air-Foil Bearings
Abstract: Air-foil bearings (AFBs) are self-acting hydrodynamic bearings, a shaft is supported by a compliant, spring-loaded foil journal lining. Once the shaft is spinning fast enough, the working fluid (usually air) pushes the foil away from the shaft so that there is no contact. The shaft and foil are divided by air's high pressure which is produced by the rotation which pulls gas into the bearing via viscosity effects. AFBs provide …
Published in International Journal of Mechanics and Design · Vol. 3, Issue 1, 2017 · pp. 1–8 Read article
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CFD Analysis of Hydrodynamic Journal Bearing
Abstract: Journal bearings have the longest history on scientific study of any class of fluid-film bearings. These journal bearings are widely used in most of the rotating machineries due to its high load-carrying capacity and formation of fluid-film thickness during the operation. This research paper represents performance evaluation of hydrodynamic journal bearing using Computational Fluid Dynamics (CFD) approach. For this study, two different geometrical bearings are considered (circular and non-circular) operating …
Published in International Journal of Manufacturing and Materials Processing · Vol. 4, Issue 2, 2018 · pp. 23–29 Read article
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Experimental Investigation of Bearing Inner and Outer Wall Defects by Ultrasonic Waves
Abstract: Sometimes the bearings show their defects by exchanging between the network gears, and this can be useful for experimental and similar experiments. These defects will cause the bearing to malfunction, the bearing to malfunction and need to be repaired and maintained, which can be useful for the industry and save potential costs. These defects can be significant through ultrasound to combine time and frequency variables, which is addressed in this …
Published in International Journal of Manufacturing and Materials Processing · Vol. 7, Issue 1, 2021 · pp. 32–37 Read article
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Optimization of Dynamic Load Carrying Capacity of Tapered Roller Bearing Using Advanced Optimization Technique
Abstract: In the design of tapered roller bearings, long life is the one of the most important criterion. Roller bearings are used mostly in mechanical equipment due to its low friction capability. Tapered roller bearing is selected and the objective function is to maximize dynamic load capacity. Design variables for the bearing include four geometrical parameters: the bearing pitch diameter, the diameter of the roller, the effective length of the roller, …
Published in International Journal of Analog Integrated Circuits · Vol. 4, Issue 2, 2018 · pp. 23–42 Read article
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Experimental Test Results on the Effect of Ultrasonic Waves on Defects in Car Bearings: The Effect of Defect Size
Abstract: To check for defects in car bearings, they are identified and measured by sound waves that are affected by the defect. Based on sound, it is called ultrasound technology because it uses high frequencies. High frequencies are the basis of ultrasound. Two features are useful for low-speed cars, which by definition usually have poor signal tolerance. High frequencies are sensitive to the effects of sound waves. In addition, the ultrasound …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 7, Issue 1, 2021 · pp. 14–21 Read article
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Multi-class Fault Diagnosis of Rolling Element Bearing Based on Empirical Mode Decomposition and Entropy Features
Abstract: Rolling element bearings are one of the most commonly used machine elements in engineering industry. Fault detection and diagnosis of rolling element bearings is essential for prevention of malfunction and failure during operation. The present work deals with rolling element bearing fault diagnosis by using Support Vector Machine (SVM) and Artificial Neural Network (ANN). Four types of bearing conditions are considered in the present analysis: inner race fault (IR), outer …
Published in International Journal of Manufacturing and Materials Processing · Vol. 2, Issue 1, 2016 · pp. 01–10 Read article
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Numerical Techniques Applied on Hydrostatic Bearing using Computational Fluid Dynamics
Abstract: In hydrostatic bearing, the oil or lubricant is supplied to the required place in bearing from external source that place is the recess. The oil enters axially and leaves perpendicularly. The important task for the purpose of analysis is finding pressure distribution in the recess. The problem here is that, it is possible to find out analytical solution for one dimension, but it is not possible to find out pressure …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 4, Issue 2, 2018 · pp. 1–10 Read article
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Rolling Element Bearing Diagnosis Using Machinery Fault Simulator
Abstract: The paper presents the diagnosis strategy for the rolling element bearing system used in machinery fault simulator (MFS). The concept is generic and it is applicable for most of the system involving bearing sub-system. The MFS details and its various maintenance strategies described. The monitoring of the rolling element bearing (REB), done with the accelerometer sensors. Acquisition of data from the sensor analog voltage to the CPU in digital format …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 2, Issue 1, 2016 · pp. 01–22 Read article
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Soft Computing Based Prediction of Ultimate Bearing Capacity of Footings Resting on Rock Masses
Abstract: The present study attempts to predict the ultimate bearing capacity of shallow foundations on rock masses using five different soft computing techniques namely i) random forest regression approach, ii) artificial neural networks, iii) support vector machine with polykernel, iv) support vector machine with (radial basis function) RBF kernel and v) M5P model tree. The ultimate bearing capacity was assumed to be dependent rock mass rating, unconfined compressive strength of rock, …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 5, Issue 2, 2019 · pp. 1–14 Read article
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A Comprehensive Study of Fault Diagnostics of Roller Bearings Using Continuous Wavelet Transform
Abstract: One of the prominent causes of breakdown of rotating machinery, bearing failure, proves to be costly to the industry. Unexpected machine stoppage disrupts production schedule and maintenance strategies. Therefore, condition monitoring has become a very important research field in recent years. It can be used to avoid unexpected failures of critical systems. Bearing fault diagnostics using vibration signals has proven to be very effective. This paper deals with the fault …
Published in International Journal of Manufacturing and Materials Processing · Vol. 2, Issue 2, 2016 · pp. 36–55 Read article
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Determination Of Soil Bearing Capacity for a Proposed 3-Storey Agricultural Engineering Complex
Abstract: At the course of the research work, bore- holes were dug at the proposed site and soil samples were collected at depth 1m, 2m, and 3m for geotechnical analysis to determine the suitability of the site for 3-storey Agricultural Engineering complex construction. The laboratory analysis performed yielded the results listed below; It was discovered that the soil's natural moisture content ranged from 11.69% to 13.01%. All samples had an exact …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 9, Issue 2, 2023 · pp. 35–41 Read article
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Seismic Bearing Capacity of Strip Footing Subjected to Eccentric Load
Abstract: Reinforced soil bed is improved soil strata from its weak unreinforced original form. By introducing reinforcing ties or strips the soil bed improves on its strength and is rendered less settleable. The compensations of introducing reinforcements have been widely studied by many researchers. The present work has evaluations, formulations and calculations for bearing capacity under certain seismic excitation when the strip footing on reinforced soil was subjected to eccentric loading. …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 4, Issue 1, 2018 · pp. 13–22 Read article
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ANALYZING THE EFFECTIVENESS OF LEAD RUBBER BEARING BASE ISOLATION IN VERTICALLY IRREGULAR MULTISTORY BUILDING
Abstract: In regions characterized by high seismicity, the structural integrity of multistorey buildings isparamount. This study delves into the effectiveness of lead rubber bearing (LRB) base isolation as a promisingstrategy to enhance the seismic resilience of vertically irregular multistorey building. The investigationscrutinizes a G+13 vertically irregular multistorey building situated in Zones 3, Zone 4, and Zone 5,employing meticulous numerical simulations to evaluate parameters including storey displacement, storeyshear, storey drift, and overturning …
Published in International Journal of Structural Engineering and Analysis · Vol. 9, Issue 2, 2023 · pp. 1–18 Read article
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Stabilization of Foundation Base Soil for Enhanced Bearing Capacity and Lateral Load Resistance
Abstract: Abstract The foundation of any structure plays a pivotal role in ensuring its stability and durability. The soil beneath the foundation must possess sufficient bearing capacity to support the structure's load, while also resisting the uplift pressure exerted by groundwater, especially in saturated conditions. Inadequate bearing capacity can lead to settlement or even structural failure. Additionally, the surrounding soil must be stabilized to prevent lateral movement and ensure the foundation's …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 10, Issue 2, 2024 · pp. 28–33 Read article
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Individual and Combined Effects of Lead Rubber Bearing and Fluid Viscous Damper Techniques on Seismic Response of Irregular Reinforced Concrete Buildings
Abstract: Most old structures that do not meet current seismic regulations may sustain significant damage or perhaps collapse as a result of an earthquake. The seismic enhancement could potentially help people survive a major earthquake. Since earthquake engineering began, not only in India but also in other nations, earthquake-resistant construction of reinforced concrete buildings has been a constant topic of research. Buildings are still being damaged as a result of earthquakes. …
Published in International Journal of Construction Engineering and Planning · Vol. 8, Issue 2, 2022 · pp. 17–28 Read article
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Bearing Capacity of Footing on Reinforced Bottom Ash
Abstract: Tons of coal has been burned daily to meet the energy requirement. As a consequence, huge amount of coal ash has been produced as waste material. At present day, recycling and reuse of waste material is favorable and also economical from engineering aspect. In the present experimental study, an attempt has been made to study the bearing capacity of footing on geotextile reinforced bottom ash. From the results obtained in …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 8, Issue 2, 2022 · pp. 48–55 Read article
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Mathematical Models and Forecast of Effect of Flow Rate on Turbidity and Total Suspended Solids Within Water Bearing Aquifer
Abstract: The aim of study is to develop mathematical models to predict turbidity and total suspended solids upon the influences of recharge and flow rate as a functional parameter in distribution interaction of water parameters within the water bearing aquifer taking a main well A as dispersing point to other wells. Predictive models have been generated to account for the effect of flow rate on turbidity and total suspended solids within …
Published in International Journal of Water Resources Engineering · Vol. 4, Issue 1, 2018 · pp. 52–60 Read article
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Investigation of Thrust Bearing High Temperature in Gas Turbine
Abstract: Gas turbines in electric power generation and various industrial applications has made remarkable improvement in the current scenario in terms of size, efficiency and prominence. In order to maintain the sustainability of high level performance and increased reliability of the gas turbine, it has become mandatory to carryout in depth diagnostic methods and frame maintenance plans. This paper mainly concentrates on the analysis of the repeated tripping of gas turbine …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 3, Issue 1, 2017 · pp. 1–13 Read article