Advances in Tribology最新文献_第5页

Extruded and Injection Moulded Virgin PA 6/6 as Abrasion Resistant Material 挤出和注塑的纯pa6 /6作为耐磨材料

IF 2.6

Advances in Tribology Pub Date : 2017-01-01 DOI: 10.1155/2017/1035017

J. Sukumaran, R. Keresztes, G. Kalácska, H. Al-Maliki, P. Neis, P. Baets

{"title":"Extruded and Injection Moulded Virgin PA 6/6 as Abrasion Resistant Material","authors":"J. Sukumaran, R. Keresztes, G. Kalácska, H. Al-Maliki, P. Neis, P. Baets","doi":"10.1155/2017/1035017","DOIUrl":"https://doi.org/10.1155/2017/1035017","url":null,"abstract":"Polyamide (PA6/6) is often used as a tribological pair in abrasion prevalent applications such as hinges and sliders. PA6/6 is frequently processed by injection moulding and extrusion process. It is known that these processes influence the polymers mechanical behaviour, but their influence on the polymers wear response has not been studied. Hence the present research attempts to study the influence of different manufacturing processes on tribological behaviour for PA6/6. Wear tests were performed on a pin abrading tester (DIN 50322). Abrasion resistance of both extruded and injection moulded PA6/6 were tested at different loads (20 and 35 N). Single-pass (nonoverlapping mode) and multipass testing (overlapping mode) were used to understand the influence of clogging of wear debris. It is evidenced that with increasing load the specific wear rate decreases; moreover, fine abrasives tend to reduce the wear rate. In multipass testing a transfer layer clogged on the counterface that acted as a protective agent and lowers wear rate. Poor mechanical strength of injection moulded polymers is apparently compensated by microstructural response for having a similar wear behaviour between extruded and injection moulded PA 6/6. Hence a proper balance between microstructural and mechanical characteristics is an absolute must in PA 6/6 for better wear performance.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"2017 1","pages":"1-9"},"PeriodicalIF":2.6,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2017/1035017","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64647595","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

Correlation Study of Physicochemical, Rheological, and Tribological Parameters of Engine Oils 机油的理化、流变和摩擦学参数的相关性研究

IF 2.6

Advances in Tribology Pub Date : 2017-01-01 DOI: 10.1155/2017/1257607

P. Thapliyal, G. D. Thakre

引用次数: 19

A Novel Approach to Reduction of Frictional Losses in a Heavy-Duty Diesel Engine by Reducing the Hydrodynamic Frictional Losses 一种通过减小流体动力摩擦损失来降低重型柴油机摩擦损失的新方法

IF 2.6

Advances in Tribology Pub Date : 2017-01-01 DOI: 10.1155/2017/9240703

Staffan Johansson, P. Nilsson, R. Ohlsson, B. Rosén

{"title":"A Novel Approach to Reduction of Frictional Losses in a Heavy-Duty Diesel Engine by Reducing the Hydrodynamic Frictional Losses","authors":"Staffan Johansson, P. Nilsson, R. Ohlsson, B. Rosén","doi":"10.1155/2017/9240703","DOIUrl":"https://doi.org/10.1155/2017/9240703","url":null,"abstract":"An important parameter in the reduction of fuel consumption of heavy-duty diesel engines is the Power Cylinder Unit (PCU); the PCU is the single largest contributor to engine frictional losses. Much attention, from both academia and industry, has been paid to reducing the frictional losses of the PCU in the boundary and mixed lubrication regime. However, previous studies have shown that a large portion of frictional losses in the PCU occur in the hydrodynamic lubrication regime. A novel texturing design with large types of surface features was experimentally analyzed using a tribometer setup. The experimental result shows a significant reduction of friction loss for the textured surfaces. Additionally, the textured surface did not exhibit wear. On the contrary, it was shown that the textured surfaces exhibited a smaller amount of abrasive scratches on the plateaus (compared to the reference plateau honed surface) due to entrapment of wear particles within the textures. The decrease in hydrodynamic friction for the textured surfaces relates to the relative increase of oil film thickness within the textures. A tentative example is given which describes a method of decreasing hydrodynamic frictional losses in the full-scale application.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"2017 1","pages":"1-17"},"PeriodicalIF":2.6,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2017/9240703","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64719100","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

A Factorial Design to Numerically Study the Effects of Brake Pad Properties on Friction and Wear Emissions 用因子设计数值研究刹车片性能对摩擦和磨损排放的影响

IF 2.6

Advances in Tribology Pub Date : 2016-11-13 DOI: 10.1155/2016/8181260

J. Wahlström

{"title":"A Factorial Design to Numerically Study the Effects of Brake Pad Properties on Friction and Wear Emissions","authors":"J. Wahlström","doi":"10.1155/2016/8181260","DOIUrl":"https://doi.org/10.1155/2016/8181260","url":null,"abstract":"Airborne particulate emissions originating from the wear of pads and rotors of disc brakes contribute up to 50% of the total road emissions in Europe. The wear process that takes place on a mesoscopic length scale in the contact interfaces between the pads and rotors can be explained by the creation and destruction of contact plateaus. Due to this complex contact situation, it is hard to predict how changes in the wear and material parameters of the pad friction material will affect the friction and wear emissions. This paper reports on an investigation of the effect of different parameters of the pad friction material on the coefficient of friction and wear emissions. A full factorial design is developed using a simplified version of a previously developed cellular automaton approach to investigate the effect of four factors on the coefficient of friction and wear emission. The simulated result indicates that a stable third body, a high specific wear, and a relatively high amount of metal fibres yield a high and stable mean coefficient of friction, while a stable third body, a low specific wear, a stable resin, and a relatively high amount of metal fibres give low wear emissions.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"2016 1","pages":"1-10"},"PeriodicalIF":2.6,"publicationDate":"2016-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2016/8181260","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64553390","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: 16

The Friction of Saline Ice on Aluminium 盐冰与铝的摩擦

IF 2.6

Advances in Tribology Pub Date : 2016-04-18 DOI: 10.1155/2016/1483951

Christopher Wallen-Russell, B. Lishman

引用次数: 5

The Segmentation of Wear Particles Images Using -Segmentation Algorithm 基于-分割算法的磨损颗粒图像分割

IF 2.6

Advances in Tribology Pub Date : 2016-04-18 DOI: 10.1155/2016/4931502

Hong Liu, Haijun Wei, Lidui Wei, Jing-ming Li, Zhiyuan Yang

引用次数: 5

A Rational Theory of Tire-Pavement Friction 一个合理的轮胎-路面摩擦理论