Tribology in Industry最新文献_第2页

Parametric Design Optimization of Convergent Textured Thrust Bearing in THD Behaviour 在 THD 行为中优化聚合纹理推力轴承的参数设计

Tribology in Industry Pub Date : 2023-12-15 DOI: 10.24874/ti.1497.06.23.09

Mertad Omar, Y. Abdelkader, Maamar Fatouma, Mostefa Kouider

引用次数: 0

Experimental Study on Gear EP Lubricant Mixed with Al2O3/SiO2/ZrO2 Composite Additives to Design a Predictive System 混合了 Al2O3/SiO2/ZrO2 复合添加剂的齿轮极压润滑油的实验研究--设计一种预测系统

Tribology in Industry Pub Date : 2023-12-15 DOI: 10.24874/ti.1461.03.23.07

Tushar D. Gadekar, Dinesh N. Kamble, Nitin H. Ambhore

{"title":"Experimental Study on Gear EP Lubricant Mixed with Al2O3/SiO2/ZrO2 Composite Additives to Design a Predictive System","authors":"Tushar D. Gadekar, Dinesh N. Kamble, Nitin H. Ambhore","doi":"10.24874/ti.1461.03.23.07","DOIUrl":"https://doi.org/10.24874/ti.1461.03.23.07","url":null,"abstract":"The friction and wear volume loss is the main cause for a failure & energy losses in heavy-duty gearboxes and it can be controlled by using a modified lubricant mixed with nano additives. This study investigates the wear and friction behaviour of gear EP oil blended with composite nano additives (Al2O3/SiO2/ZrO2) in combination with Zinc dialkyl dithiophosphate. All trials were conducted under various concentrations of composite nanoparticles, at loads of 60-100 N and sliding velocities of 0.65-1.5 m/s. The experimental study on antiwear and anti-friction properties for the oil was conducted on a pin-on-disc apparatus. The design of experiment was developed using response surface approach to investigate optimum friction coefficient and wear volume loss in lubricant. It is found that blending of nano composite add-ons blended with Zinc dialkyl dithiophosphate in gear EP lubricant significantly diminishes a wear volume loss, friction coefficient by 15.62 % and 20.6 % respectively as compared to a base lubricant. The findings of this investigation and the obtained correlations were converted in to customized visual basis based soft tool as a predictor for future aspects.","PeriodicalId":23320,"journal":{"name":"Tribology in Industry","volume":"62 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138999038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effective Strains Determination in Continuous Constrained Double Bending with Active Friction Forces 带主动摩擦力的连续约束双弯曲中有效应变的测定

Tribology in Industry Pub Date : 2023-12-15 DOI: 10.24874/ti.1524.07.23.08

V. Kamburov, A. Nikolov

{"title":"Effective Strains Determination in Continuous Constrained Double Bending with Active Friction Forces","authors":"V. Kamburov, A. Nikolov","doi":"10.24874/ti.1524.07.23.08","DOIUrl":"https://doi.org/10.24874/ti.1524.07.23.08","url":null,"abstract":"In this work, a new process for severe plastic deformation (SPD) with active friction forces - CCDB Conform R3D2, a variation of the so-called \"active bending\", which is a continuous two-stage bending in calibers with small relative bending radius, is analyzed. A mechanical scheme of a device for realization of the process with a bending roller is proposed, based on a developed 3D virtual tool for its realization. Using CAD/CAE software 3D simulation, two virtual solutions of the process were compared, differing in terms of the location of the bending roller relative to the axes of the feeding and output rolls. The distribution and magnitude of the effective strains in the volume of the deformed long workpiece in the two bending stages at small relative bending radiuses were analyzed. An analytical expression is developed to determine the effective strains achieved in the SPD operation by constrained continuous bending in calibers with grooved rolls. The strain calculation methodology is based on the results obtained by simulation modelling of the CCB Conform R3D2 process in trapezoidal calibers with a bending roller located above and below the rolls line.","PeriodicalId":23320,"journal":{"name":"Tribology in Industry","volume":"47 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138996038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of Wear Resistance of Polyamide PA6 Based Composite Materials for Metal - Polymer Plain Bearings and Gears 用于金属-聚合物滑动轴承和齿轮的聚酰胺 PA6 基复合材料的耐磨性研究

Tribology in Industry Pub Date : 2023-12-15 DOI: 10.24874/ti.1526.07.23.09

M. Chernets, Yu. M. Chernets’, Yuriy Skvarok, Jaroslaw Zubrzycki

{"title":"Investigation of Wear Resistance of Polyamide PA6 Based Composite Materials for Metal - Polymer Plain Bearings and Gears","authors":"M. Chernets, Yu. M. Chernets’, Yuriy Skvarok, Jaroslaw Zubrzycki","doi":"10.24874/ti.1526.07.23.09","DOIUrl":"https://doi.org/10.24874/ti.1526.07.23.09","url":null,"abstract":"Metal-polymer plain bearings and gears are becoming increasingly used in many areas of human activity. The wear resistance of one group of such materials - unreinforced polyamides PA6, PA66, and composites with fillers РА6+30GF, РА6+30CF, РА6+MoS2, РА6+Оil was studied. To determine their wear resistance indicators the author's method of model triboexperimental research according to the scheme of end friction at dry sliding friction paired with carbon steel (0.45%C) is used. According to the determined wear resistance indicators, are calculated as the basic parameters of the author's mathematical model of materials’ wear kinetics at sliding friction and the analytical method of the research of specified friction units. Based to the research, polymeric materials’ wear resistance diagrams are plotted as graphical indicators of wear resistance in the accepted range of specific friction forces. The qualitative and quantitative influence of the type and structure of the fillers on the wear resistance has been established. Qualitatively, the nature of the change in wear resistance of the indicated types of polyamides is similar, quantitatively the difference is significantly differentiated. It was found that PA6+Oil has the highest wear resistance compared to the РA6. It consistently increases in the following sequence: PA66, РA6+30GF, РA6+MoS2, РA6+30CF, РA6+Oil.","PeriodicalId":23320,"journal":{"name":"Tribology in Industry","volume":"66 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138997589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Build Orientation and Heat Treatment on Erosion Behavior of Al10SiMg Fabricated Using Laser Powder Bed Fusion 构建方向和热处理对使用激光粉末床熔融技术制造的 Al10SiMg 的腐蚀行为的影响

Tribology in Industry Pub Date : 2023-12-15 DOI: 10.24874/ti.1470.04.23.06

Pooja Angolkar, M. Manzoor Hussain

{"title":"Effect of Build Orientation and Heat Treatment on Erosion Behavior of Al10SiMg Fabricated Using Laser Powder Bed Fusion","authors":"Pooja Angolkar, M. Manzoor Hussain","doi":"10.24874/ti.1470.04.23.06","DOIUrl":"https://doi.org/10.24874/ti.1470.04.23.06","url":null,"abstract":"Laser Powder Bed Fusion (LPBF) is a form of additive manufacturing that can directly make metal components and has begun to be employed in a variety of industrial situations. Moreover, the erosion characteristics of SLM-produced items have been documented relatively infrequently. In the current work, the erosion behavior of a heat-treated Al-Si-10% Mg alloy generated via laser powder bed fusion (LPBF) has been investigated. The samples were printed in three directions (horizontal (0o), vertical (90o), and inclined (45o) on the build platform using the Direct Metal Laser Sintering (DMLS) system (EOS M 290) machine. Al%Si-10%Mg samples were given treatment (T5, T6). Optical and scanning electron microscopes (SEM) were used to examine the microstructure under both printed and heat-treated conditions. Energy Dispersive Spectroscopy (EDS) and X-ray Diffraction (XRD) were used to investigate the alloy's elemental composition and compound production. The erosion test was executed in each of the three orientations, plus heat-treated samples and as-printed samples. The selected input parameters were impingement angle and flow velocity. The erosion rate was examined and contrasted across orientations for printed and heat-treated conditions to establish the best orientation. The post-eroded surface was analysed using SEM, EDS, and XRD to evaluate possible erosion processes. The key findings were: T5 heat-treated samples sustain well and have the least mass loss; Horizontal (0°) oriented samples undergo less erosion compared to other orientations; T6 heat-treated samples show maximum erosion on printed samples, and hence it is not recommended. T5 heat treatment is proven to be superior in providing high erosion resistance, followed by printed and T6 heat-treatment, respectively. The heat treatment effects are more significant than the orientation effects in determining the erosion resistance of the Al10SiMg alloy. The erosion mechanisms, such as ploughing, melting, and cratering, were identified.","PeriodicalId":23320,"journal":{"name":"Tribology in Industry","volume":"183 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138998254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tribology Characteristic of Ball Bearing SKF RB-12.7/G20W using SAE 5W-30 Lubricant with Carbon-Based Nanomaterial Addition 使用添加碳基纳米材料的 SAE 5W-30 润滑油的 SKF RB-12.7/G20W 球轴承的摩擦学特性

Tribology in Industry Pub Date : 2023-12-15 DOI: 10.24874/ti.1538.09.23.11

P. Puspitasari, Avita Ayu Permanasari, Muhammad Ilman Hakimi Chua Abdullah, Diki Dwi Pramono, Oscar Jaya Silaban

{"title":"Tribology Characteristic of Ball Bearing SKF RB-12.7/G20W using SAE 5W-30 Lubricant with Carbon-Based Nanomaterial Addition","authors":"P. Puspitasari, Avita Ayu Permanasari, Muhammad Ilman Hakimi Chua Abdullah, Diki Dwi Pramono, Oscar Jaya Silaban","doi":"10.24874/ti.1538.09.23.11","DOIUrl":"https://doi.org/10.24874/ti.1538.09.23.11","url":null,"abstract":"The thermophysical, rheological, and tribological properties in lubricant are essential for preserving the engines, power steering systems, and engine components from damage caused by friction and wear. The incorporation of nano-sized particles into lubricating oils has been reported to enhance these properties. Therefore, this study explores the impacts resulting from the incorporation of graphene, multiwalled carbon nanotubes (MWCNT), double-walled carbon nanotubes (DWCNT), and single-walled carbon nanotubes (SWCNT) at a quantity of 0.04 grams into the SAE 5W-30 base oil. These nanoparticles were synthesized using a two-step method, resulting in nanolubricants. The addition of carbon-based nanomaterials increases the density and decreases the viscosity of the base lubricant. The flow of nanolubricants exhibits non-Newtonian shear thinning behavior during the test at elevated temperatures. The results of the four-ball tribo-tester test reveal the increase of Coefficient of Friction (CoF) values and the extent of wear scar area. Further, the Scanning Electron Microscopy (SEM) analysis was employed to observe the wear morphology of the nanolubricants on the SKF RB-12.7/G20W ball bearing. Its results indicate a prevalence of groove-type wear as compared to conventional lubricants.","PeriodicalId":23320,"journal":{"name":"Tribology in Industry","volume":"122 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138999677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Internal Structure of Circular Dimples on Hydrodynamic Lubrication Characteristics of Thrust Bearings 圆形凹坑内部结构对推力轴承流体动力润滑特性的影响

Tribology in Industry Pub Date : 2023-12-15 DOI: 10.24874/ti.1504.06.23.09

Ryota Ishi, Reo Miwa, N. Miyanaga, J. Tomioka

{"title":"Effect of Internal Structure of Circular Dimples on Hydrodynamic Lubrication Characteristics of Thrust Bearings","authors":"Ryota Ishi, Reo Miwa, N. Miyanaga, J. Tomioka","doi":"10.24874/ti.1504.06.23.09","DOIUrl":"https://doi.org/10.24874/ti.1504.06.23.09","url":null,"abstract":"In this study, the effects of three types of dimples with different internal structures on the fluid lubrication characteristics of seal-like thrust bearings were experimentally and numerically investigated. In the experiments, the load-carrying capacity and the frictional torque were measured. The measurements were performed with a fixed constant film thickness. The behaviors of cavitation bubbles occurred within the dimples were observed through the rotating glass plate. Three types of internal structures of dimples were tested: cylindrical, spherical and conical. The measurement results were simulated by using the Reynolds equation. In addition, applying the periodic condition, a single dimple was analyzed. As the results, in three types of dimples, the load-carrying capacity increased as the rotational speed increased. The cylindrical internal structure built up the largest pressure at the trailing edge of dimples, and consequently the largest load-carrying capacity. The frictional torque also increased with increasing the rotational speed in the dimpled bearings. However, the effect of the internal structure on the frictional torque was not significant. Analytical results showed that the pressure reached the maximum value at the trailing edge of the cylindrical internal structure. The conical and sphere internal structure had the maximum value slightly inside the trailing edge.","PeriodicalId":23320,"journal":{"name":"Tribology in Industry","volume":"4 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138999819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Model for Prediction of Outer Race Defects of Rolling Contact Bearing based on Vibration Data Using Machine Learning Algorithms 基于振动数据的滚动接触轴承外圈缺陷预测模型（使用机器学习算法

Tribology in Industry Pub Date : 2023-12-15 DOI: 10.24874/ti.1540.09.23.11

Kunal Kumar Gupta, S. M. Muzakkir

{"title":"A Model for Prediction of Outer Race Defects of Rolling Contact Bearing based on Vibration Data Using Machine Learning Algorithms","authors":"Kunal Kumar Gupta, S. M. Muzakkir","doi":"10.24874/ti.1540.09.23.11","DOIUrl":"https://doi.org/10.24874/ti.1540.09.23.11","url":null,"abstract":"The detection of bearing defects while the machinery is in use is essential for predicting the incipient failure and thereby providing an opportunity to take remedial measures for preventing the costly downtime and ensuring the safe and efficient operation of rotating machinery. With the increasing availability of vibration sensor data and the development of machine learning techniques, the ML methods have become a popular approach for automated fault diagnosis in bearings. In this paper, an attempt has been made to detect the faults in the outer race of bearing using different ML algorithms. An experimental setup has been designed and fabricated to conduct experiments on healthy and faulty bearings and the vibration signals were captured. The captured vibration signals were directly employed as images for training the ML algorithms without the need for conducting the spectral analysis. Six machine learning algorithms, namely, Linear Regression (LR), Decision Tree (DTR), KNN Regression (KNNR), Random Forest Regression (RFR), Convolution Neural Network (CNN), Naive Bayes (NB) were separately applied to classify the location of defects within the outer race of the ball bearing. The accuracy table are used to find the best suitable algorithm for the predictions. The methodology includes data preprocessing techniques, network architectures, training strategies, and evaluation metrics. It has been established that the use of ML technique is very effective in detecting the bearing defects and CNN is able to achieve 100% accuracy.","PeriodicalId":23320,"journal":{"name":"Tribology in Industry","volume":"10 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139000183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Nano-Additives on Tribological Behaviour of Hazelnut Oil and Sunflower Oil 纳米添加剂对榛子油和葵花籽油摩擦学性能的影响

Tribology in Industry Pub Date : 2023-09-15 DOI: 10.24874/ti.1464.03.23.05

Niveditha Noble, U.V. Akhil, S. Aravind Krishna, N. Radhika, M. Ramu

{"title":"Effect of Nano-Additives on Tribological Behaviour of Hazelnut Oil and Sunflower Oil","authors":"Niveditha Noble, U.V. Akhil, S. Aravind Krishna, N. Radhika, M. Ramu","doi":"10.24874/ti.1464.03.23.05","DOIUrl":"https://doi.org/10.24874/ti.1464.03.23.05","url":null,"abstract":"The performance loss in industrial equipment due to friction and wear is one of the critical concerns among researchers. This drives the need to develop lubrication fluids that reduce friction to provide extended performance. The global sustainability movement drives the research towards novel bio-based oils to aid in lubrication. This study analyses the dispersion stability, tribological behaviour and antiwear properties of zinc oxide (ZnO), titanium dioxide (TiO 2 ) and molybdenum di sulphide (MoS 2 ) nanoparticles as an additive in hazelnut and sunflower oils. The viscosity index and flash point of the prepared nano lubricants were analyzed. The tribological test conducted on four ball tester resulted in a 12.6% and 35.8% reduction in coefficient of friction (COF) for 0.5% ZnO in hazelnut oil and 1% MoS 2 in sunflower oil. The corresponding wear scar images were analysed. The extreme pressure (EP) test resulted that 1% MoS 2 in sunflower oil exhibiting improved performance as it sustained a 1800N load. The kinematic viscosity of the 0.5% ZnO in hazelnut oil and 1% MoS 2 in sunflower oil had an improvement against others. Therefore, infusion of nano additives in bio-oils offers enhanced tribological properties foreseeing sustainability in applications.","PeriodicalId":23320,"journal":{"name":"Tribology in Industry","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135438026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wear Metal Concentrations Used for Enhancing Spectrometric Oil Analysis Method Credibility and Statistical Feedback - A Step Towards Big Data Analysis 磨损金属浓度用于提高光谱油分析方法的可信度和统计反馈-迈向大数据分析的一步

Tribology in Industry Pub Date : 2023-09-15 DOI: 10.24874/ti.1501.06.23.08

Polychronis S. Dellis

{"title":"Wear Metal Concentrations Used for Enhancing Spectrometric Oil Analysis Method Credibility and Statistical Feedback - A Step Towards Big Data Analysis","authors":"Polychronis S. Dellis","doi":"10.24874/ti.1501.06.23.08","DOIUrl":"https://doi.org/10.24874/ti.1501.06.23.08","url":null,"abstract":"The well-established oil condition monitoring tool of spectrometric oil analysis is used to expand previous published experimental analysis with a view to enhancing multiple wear metal elements study in numerous different applications. This study includes gas turbine engines, piston engines, turboprop and turboshaft engines and helicopter gearbox assemblies. The database used in the original study was enhanced with numerous applications that were used to establish the credibility of spectrometric oil analysis as an important diagnostic tool. The importance of the method lies in its ability to locate unusual concentrations of a metal element that is translated as an indication of abnormal wear of the equipment under scrutiny. The operator benefits from major failures avoidance and taking correct decisions regarding equipment maintenance and servicing or repairing, can also profit from economic factors rationality during equipment operation. Lubricant quality, identification or imminent failures, prolonged life cycle and acquisition of statistical data are conditions that emanate from the correct interpretation of the results that in turn, can avoid human lives and equipment losses due to major incidents. © 2023 Published by Faculty of Engineering","PeriodicalId":23320,"journal":{"name":"Tribology in Industry","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135438188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0