Advances in Tribology最新文献_第2页

Experimental Investigation of the Diagnosis of Angular Contact Ball Bearings Using Acoustic Emission Method and Empirical Mode Decomposition 声发射法和经验模态分解在角接触球轴承故障诊断中的实验研究

IF 2.6

Advances in Tribology Pub Date : 2020-09-29 DOI: 10.1155/2020/8231752

Ramtin Tabatabaei, Aref Aasi, S. M. Jafari, E. Ciulli

{"title":"Experimental Investigation of the Diagnosis of Angular Contact Ball Bearings Using Acoustic Emission Method and Empirical Mode Decomposition","authors":"Ramtin Tabatabaei, Aref Aasi, S. M. Jafari, E. Ciulli","doi":"10.1155/2020/8231752","DOIUrl":"https://doi.org/10.1155/2020/8231752","url":null,"abstract":"Early detection of angular contact bearings, one of the important subsets of rolling element bearings (REBs), is critical for applications of high accuracy and high speed performance. In this study, acoustic emission (AE) method was applied to an experimental case with defects on angular contact bearing. AE signals were collected by AE sensors in different operating conditions. Signal to noise ratio (SNR) was calculated by kurtosis to entropy ratio (KER), then acquired signals were denoised by empirical mode decomposition (EMD) method, and optimal intrinsic mode function (IMF) was selected by the proposed method. Finally, envelope spectrum was applied to the denoised signals, and frequencies of defects were obtained in different rotating speeds, loadings, and defect sizes. For the first time, a small defect with width of 0.3 mm and loading of 475 N was detected in early stage of 0.04 KHz. Moreover, a comparison between theoretical and extracted defect frequencies suggested that our method successfully detected localized defects in both inner and outer race. Our results show promise in detecting small size defects in REBs.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2020-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/8231752","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48955890","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: 15

Tribological Behavior of Tool Steel Substrate and Solid Films against 304 BA Austenitic Stainless Steel under Dry Sliding 干滑动下工具钢基体和固体膜对304 BA奥氏体不锈钢的摩擦学行为

IF 2.6

Advances in Tribology Pub Date : 2020-09-04 DOI: 10.1155/2020/8845548

N. Angsuseranee, Bhadpiroon Watcharasresomroeng, Pracha Bunyawanichkul, Siradej Chartniyom

{"title":"Tribological Behavior of Tool Steel Substrate and Solid Films against 304 BA Austenitic Stainless Steel under Dry Sliding","authors":"N. Angsuseranee, Bhadpiroon Watcharasresomroeng, Pracha Bunyawanichkul, Siradej Chartniyom","doi":"10.1155/2020/8845548","DOIUrl":"https://doi.org/10.1155/2020/8845548","url":null,"abstract":"The objective of this work is to study the tribological behavior of the contacting surfaces of SKD11 grade hardened cold work tool steel against grade SUS304BA austenitic stainless steel. DLC, CrN, TiN, and TiCN films were coated on the surface of the tool material to test the tribological performance. Simulation testing with a pin-on-disk was used in this study. The study was done under dry conditions with sliding velocities at 50, 100, and 150 mm/s and contact pressures of 807, 1095, and 1280 MPa. The results show that the main problem is the adhesion of the workpiece material on the tool surface. The severity of the adhesion from the workpiece material is proportional to the sliding velocity and the contact pressure between the contacting surfaces. The coefficient of friction between the contacting surfaces has a positive relationship with the adhesion occurring on the tool surface. The hardness of the film coating is useful for preventing wear of the tool material, especially under high pressure between the contacting surfaces. However, it does not prevent the adhesion of workpiece material of low sliding velocity and low contact pressure conditions. Noncoated SKD11 tool steel has better effectiveness of adhesion performance than CrN, TiN, and TiCN film coatings.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"1 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2020-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/8845548","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42687564","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: 5

Effect of Load on the Tribological Properties of Eutectic Al-Si Reinforced n-Al2O3 under Dry Sliding Conditions 干滑动条件下载荷对共晶Al-Si增强n-Al2O3摩擦学性能的影响

IF 2.6

Advances in Tribology Pub Date : 2020-02-07 DOI: 10.1155/2020/3761745

P. D. Srivyas, M. Charoo

{"title":"Effect of Load on the Tribological Properties of Eutectic Al-Si Reinforced n-Al2O3 under Dry Sliding Conditions","authors":"P. D. Srivyas, M. Charoo","doi":"10.1155/2020/3761745","DOIUrl":"https://doi.org/10.1155/2020/3761745","url":null,"abstract":"Advanced composites are the materials of the new generation. Hence, the focus of the study is to determine the tribological properties of the eutectic Al-Si alloy reinforced with (2, 4, 6, 8, and10 wt. %) of n-Al2O3 against chrome-plated steel ball under dry sliding conditions. The novelty of this work is the fabrication of the composite sample with this elemental composition, which is not done before. Spark plasma sintering (SPS) nonconventional fabrication method is used to fabricate advanced composite samples. Friction coefficient (COF) and wear rate of the composite samples were studied under high load, varying from 50 N to 300 N, using the ball-on-disc tribometer configuration, with other parameters such as stroke, frequency, sliding distance, and sliding velocity remaining constant at 2 mm, 30 Hz, 120 meter, and 0.120 m/s, respectively. Reduction in wear volume for the advanced composite was reported in the range 15.45–44.58% compared to the base alloy (eutectic Al-Si alloy). An increase in friction coefficient was reported in the range 28.80–35.65% compared to the base matrix alloy material. It was also reported that the wear rate increases and the friction coefficient of the composite sample decreases with an increase in load for the tribo-pair. It was observed that an increase in the wt. % of reinforcement influences the friction and wear behavior of the composite. Wear mechanism at high load was characterized by plastic deformation, adhesion, delamination, and abrasion wear. For pre- and postcharacterization of surface and worn tracks, scanning electron microscopy (SEM) electron dispersion spectroscopy (EDS), 3D surface profilometer, and optical microscopy were used. This work aimed to investigate the influence of load on the tribological properties of Al-Si eutectic reinforced n-Al2O3 under dry sliding conditions. Its main objective was to provide a new contribution to the tribological behavior of these composites fabricated using the nonconventional spark plasma sintering method.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2020-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/3761745","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44053518","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: 3

Estimation of the Oxidative Deterioration of Turbine Oil Using Membrane Patch Color 利用膜斑色评价汽轮机油的氧化劣化

IF 2.6

Advances in Tribology Pub Date : 2020-02-07 DOI: 10.1155/2020/1708408

Tomohiko Kon, T. Honda, A. Sasaki

{"title":"Estimation of the Oxidative Deterioration of Turbine Oil Using Membrane Patch Color","authors":"Tomohiko Kon, T. Honda, A. Sasaki","doi":"10.1155/2020/1708408","DOIUrl":"https://doi.org/10.1155/2020/1708408","url":null,"abstract":"Lubricating oils degrade into two main products: oxidation products and solid particles. Oxidation products, called varnish, of turbine oils for power generation have become a particularly serious problem in recent years. The first step in determining the potential to produce varnish is to determine the remaining life of the antioxidant in the oil, but even though turbine oil may have antioxidants of sufficient longevity, varnish problems still occur frequently. Accordingly, to prevent varnish, it is necessary to diagnose oil oxidation products. Thus, the authors have developed a diagnostic method using membrane patch color, but the relationship between membrane patch color and the remaining life of turbine oils has yet to be clarified. This paper investigates a new method for estimating the oxidative degradation of turbine oils that uses membrane patch color and the dry turbine oxidation stability test (dry TOST) based on oxidation products and the remaining life of the turbine oils. Sample oils were prepared and degraded by oxidation in the laboratory using a dry TOST apparatus, and the membrane patch color was measured using a colorimetric patch analyzer (CPA). The relationship between membrane patch color and the rotating pressure vessel oxidation test (RPVOT) residual rate was then investigated. The results show that the new estimation method using the CPA and dry TOST is able to monitor the decrease of the RPVOT residual rate from the early stages of oxidative deterioration.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":" ","pages":"1-8"},"PeriodicalIF":2.6,"publicationDate":"2020-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/1708408","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46216787","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: 4

The Performance of Squeeze Film between Parallel Triangular Plates with a Ferro-Fluid Couple Stress Lubricant 含铁流体耦合应力润滑剂的平行三角形板间挤压油膜的性能

IF 2.6

Advances in Tribology Pub Date : 2020-01-30 DOI: 10.1155/2020/8151069

Akbar Toloian, M. Daliri, N. Javani

引用次数: 3

Tribological Behaviour of Neem Oil with and without Graphene Nanoplatelets Using Four-Ball Tester 使用四球测试器测试含和不含石墨烯纳米片的印楝油的摩擦学行为

IF 2.6

Advances in Tribology Pub Date : 2020-01-25 DOI: 10.1155/2020/1984931

B. Suresha, G. Hemanth, A. Rakesh, K. Adarsh

引用次数: 22

High Temperature Friction and Wear Performance of PVD Coatings under Press Hardening Contact Conditions 压硬化接触条件下PVD涂层的高温摩擦磨损性能

IF 2.6

Advances in Tribology Pub Date : 2019-04-17 DOI: 10.1155/2019/4981246

S. Mozgovoy, J. Hardell, B. Prakash

{"title":"High Temperature Friction and Wear Performance of PVD Coatings under Press Hardening Contact Conditions","authors":"S. Mozgovoy, J. Hardell, B. Prakash","doi":"10.1155/2019/4981246","DOIUrl":"https://doi.org/10.1155/2019/4981246","url":null,"abstract":"Press hardening is widely employed to produce automotive structural and safety components from advanced high-strength steels. This process depends on friction between the forming tools and the work piece. Wear of the forming tools affects the dimensional accuracy of produced components and reduces their service life. It is therefore desirable to reduce wear of forming tools for press hardening applications. One way to achieve this is by applying hard physical vapour deposited (PVD) coatings on the tool. In this work, the tribological behaviour of PVD coated tool-work piece material pairs has been studied at elevated temperatures in an experimental set-up simulating the tribological conditions in press hardening. Four different PVD coatings deposited on tool steel and uncoated tools as reference were studied during sliding against uncoated and Al-Si coated 22MnB5 steel. Results show that uncoated tools exhibited the lowest coefficient of friction when sliding against uncoated 22MnB5 steel. A CrWN coating initially showed low coefficient of friction but it increased with increasing sliding distance. A TiAlN coating and one of two AlCrN coatings showed similar frictional behaviour when sliding against uncoated 22MnB5 steel. During sliding against uncoated 22MnB5 steel, adhesive wear has been found to be the dominant wear mechanism. Adhesive wear was considerably reduced in the case of hard PVD coated tools in comparison to that of uncoated tools. During sliding against Al-Si coated 22MnB5 steel, no clear advantage in terms of friction behaviour of uncoated or PVD coated tools was observed. However, the transfer of Al-Si coating material from the work piece to the tools was significantly reduced for PVD coated tools. Frictional instabilities in all cases involving Al-Si coated work piece material further confirmed the occurrence of adhesive material transfer.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2019-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2019/4981246","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45231517","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: 4

Wear Resistance of (Diamond-Ni)-Ti6Al4V Gradient Materials Prepared by Combined Selective Laser Melting and Spark Plasma Sintering Techniques 选择性激光熔化与火花等离子烧结相结合制备(金刚石- ni)-Ti6Al4V梯度材料的耐磨性

IF 2.6

Advances in Tribology Pub Date : 2019-03-04 DOI: 10.1155/2019/5415897

R. Rahmani, M. Antonov, L. Kollo

{"title":"Wear Resistance of (Diamond-Ni)-Ti6Al4V Gradient Materials Prepared by Combined Selective Laser Melting and Spark Plasma Sintering Techniques","authors":"R. Rahmani, M. Antonov, L. Kollo","doi":"10.1155/2019/5415897","DOIUrl":"https://doi.org/10.1155/2019/5415897","url":null,"abstract":"An approach of sintering 3D metal printed lattices and diamond nickel-coated particles is proposed which can be used for the production of tunnel boring machine (TBM) cutters and mining equipment blades. Nickel-coated diamond particles are mixed with titanium powder and incorporated into a lightweight Ti6Al4V (3D printed) lattice with the help of spark plasma sintering (SPS) method. Effect of Ti6Al4V lattices size, diamond particles size, and nickel coating layer thickness on wear resistance of composites is discussed. Functionally graded lattice (FGL) structures were produced by selective laser melting (SLM) method, representing an increasingly growing additive manufacturing engineering area introduced in material engineering. Impact-abrasive tribo-device (IATD), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), and optical surface profiler (OSP) were used to characterize samples. An ab initio design of diamond-metal composite is based on the improvement of impact and abrasive wear resistance of Ti6Al4V by adding diamond particles and by applying of gradient lattice structure. The specimen with larger size of the diamond particle and thicker Ni coating has better wear resistance. In addition, ANSYS software simulations were done to analyze the effect of the presence of 3D printed lattice via nonlinear finite element AUTODYN solver under impact test. Diamond-based gradient composite material produced by combined SLM-SPS methods can be applied in applications where resistance against impact-abrasive wear is important.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"1 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2019-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2019/5415897","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41870385","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: 18

Comparative Experimental Study of Tribo-Mechanical Performance of Low-Temperature PVD Based TiN Coated PRCL Systems for Diesel Engine 柴油机低温PVD基TiN涂层PRCL系统摩擦学性能的对比实验研究

IF 2.6

Advances in Tribology Pub Date : 2018-12-12 DOI: 10.1155/2018/9437815

G. Uddin, Muhammad Sajid Kamran, J. Ahmad, M. Ghufran, M. Asim, Muhammad Qasim Zafar, M. Irfan, B. Waseem, A. Khan, M. Jawad, I. Zeid, S. Kamarthi

{"title":"Comparative Experimental Study of Tribo-Mechanical Performance of Low-Temperature PVD Based TiN Coated PRCL Systems for Diesel Engine","authors":"G. Uddin, Muhammad Sajid Kamran, J. Ahmad, M. Ghufran, M. Asim, Muhammad Qasim Zafar, M. Irfan, B. Waseem, A. Khan, M. Jawad, I. Zeid, S. Kamarthi","doi":"10.1155/2018/9437815","DOIUrl":"https://doi.org/10.1155/2018/9437815","url":null,"abstract":"Piston ring and cylinder liner (PRCL) interface is a major contributor to the overall frictional and wear losses in an IC engine. Physical vapor deposition (PVD) based ceramic coatings on liners and rings are being investigated to address these issues. High temperature requirements for applications of conventional coating systems compromise the mechanical properties of the substrate materials. In the current study, experimental investigation of tribo-mechanical properties is conducted for various titanium nitride (TiN) coated PRCL interfaces in comparison with a commercial PRCL system. Low-temperature PVD based TiN coating is successfully achieved on the grey cast iron cylinder liner samples. Surface roughness of the grey cast iron cylinder liner substrates and the thickness of TiN coating are varied. A comprehensive comparative analysis of various PRCL interfaces is presented and all the trade-offs between various mechanical and tribological performance parameters are summarized. Coating thickness between 5 and 6 micrometres reports best tribo-mechanical behaviour. Adhesion and hardness are found to be superior for the TiN coatings deposited on cylinder liner samples with higher roughness, i.e., ~ 5-micron Ra. Maximum 62 % savings on the COF is reported for a particular PRCL system. Maximum 97% saving in cylinder liner wear rate is reported for another PRCL system.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2018/9437815","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43249335","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: 3

Numerical Analysis of Elastic Contact between Coated Bodies 涂层体间弹性接触的数值分析

IF 2.6

Advances in Tribology Pub Date : 2018-11-01 DOI: 10.1155/2018/6498503

S. Spinu

{"title":"Numerical Analysis of Elastic Contact between Coated Bodies","authors":"S. Spinu","doi":"10.1155/2018/6498503","DOIUrl":"https://doi.org/10.1155/2018/6498503","url":null,"abstract":"Substrate protection by means of a hard coating is an efficient way of extending the service life of various mechanical, electrical, or biomedical elements. The assessment of stresses induced in a layered body under contact load may advance the understanding of the mechanisms underlying coating performance and improve the design of coated systems. The iterative derivation of contact area and contact tractions requires repeated displacement evaluation; therefore the robustness of a contact solver relies on the efficiency of the algorithm for displacement calculation. The fast Fourier transform coupled with the discrete convolution theorem has been widely used in the contact modelling of homogenous bodies, as an efficient computational tool for the rapid evaluation of convolution products that appear in displacements and stresses calculation. The extension of this technique to layered solids is tantalizing given that the closed-form analytical functions describing the response of layered solids to load are only available in the frequency domain. Whereas the false problem periodization can be treated as in the case of homogenous solids, the aliasing phenomenon and the handling of the frequency response function in origin require adapted techniques. The proposed algorithm for displacement calculation is coupled with a state-of-the-art contact solver based on the conjugate gradient method. The predictions of the newly advanced computer program are validated against existing results derived by a different method. Multiple contact cases are simulated aiming to assess the influence of coating thickness and of its elastic properties on the contact parameters and the strass state. The performed simulations prove that the advanced algorithm is an efficient tool for the contact analysis of coated bodies, which can be used to further understand the mechanical behavior of the coated system and to optimize its design.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2018/6498503","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43231016","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: 1