Tribology Letters最新文献_第8页

A Synchronous Sensing Method of Measuring Lubricating Oil Film Thickness and Temperature by Using Eddy Current Effect 利用涡流效应测量润滑油膜厚度和温度的同步传感方法

IF 2.9 3区工程技术

Tribology Letters Pub Date : 2024-05-28 DOI: 10.1007/s11249-024-01870-4

Xiuqi Yuan, Hongkai Li, Tong Zhang, Zihan Li, Shaohua Zhang

{"title":"A Synchronous Sensing Method of Measuring Lubricating Oil Film Thickness and Temperature by Using Eddy Current Effect","authors":"Xiuqi Yuan, Hongkai Li, Tong Zhang, Zihan Li, Shaohua Zhang","doi":"10.1007/s11249-024-01870-4","DOIUrl":"10.1007/s11249-024-01870-4","url":null,"abstract":"<div><p>The eddy current method can be well applied in the lubricating oil film thickness measurement, due to its excellent performance, such as high-precision, non-destructive and strong environmental adaptability in situ. Generally, the temperature variation would cause a failure of the lubricating oil, therefore it is necessary to detect synchronously the oil film temperature for controlling an effective lubrication state, meanwhile it also affects the measurement performance of an eddy current sensor. In this study, a high-precision detection method of measuring the thickness and temperature of lubricating oil film by using the eddy current effect is proposed. Firstly, an oil film thickness detection model with an eddy current coil is established by coupling electromagnetic field and temperature field, and the effect of temperature variation on film thickness measurement is revealed. It is found that the coil inductance and film thickness have a good linear relationship within a certain range, so do the coil resistance and temperature. Then, a signal conversion module of detection circuit is designed, and a decoupling algorithm on extracting the two characteristic components (thickness and temperature) is proposed by separating the real and imaginary parts of the output voltage. Finally, according to a series of calculation and analysis, the fitting relationship between the real and imaginary parts of voltage and the temperature and thickness of oil film is established, which improves film thickness measurement accuracy and temperature stability, meanwhile achieve a synchronous sensing of oil film thickness and temperature.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"72 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141172945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Running-in Period During Sliding Wear of Austenitic Steels 奥氏体钢滑动磨损过程中的磨合期

IF 2.9 3区工程技术

Tribology Letters Pub Date : 2024-05-28 DOI: 10.1007/s11249-024-01867-z

O. A. Zambrano, B. Iglesias-Guerrero, S. A. Rodríguez, J. J. Coronado

引用次数: 0

Influence of Lubricated Rolling/Sliding Tribotesting on Hydrogen Trapping in 100Cr6 Bearing Steel 润滑滚动/滑动摩擦试验对 100Cr6 轴承钢中氢捕集的影响

IF 2.9 3区工程技术

Tribology Letters Pub Date : 2024-05-28 DOI: 10.1007/s11249-024-01871-3

Lisa-Marie Weniger, Birhan Sefer, Leonardo Pelcastre, Pia Åkerfeldt, Jens Hardell

{"title":"Influence of Lubricated Rolling/Sliding Tribotesting on Hydrogen Trapping in 100Cr6 Bearing Steel","authors":"Lisa-Marie Weniger, Birhan Sefer, Leonardo Pelcastre, Pia Åkerfeldt, Jens Hardell","doi":"10.1007/s11249-024-01871-3","DOIUrl":"10.1007/s11249-024-01871-3","url":null,"abstract":"<div><p>As hydrogen reduces the fatigue life of 100Cr6 bearing steel significantly, extensive research on the interaction of hydrogen with 100Cr6 is necessary. This study investigated the influence of rolling/sliding tribotesting performed on a micro-pitting-rig on the hydrogen absorption and trapping behaviour of 100Cr6 bearing steel. Thermal desorption mass spectrometry was used to compare the hydrogen desorption spectra of 100Cr6 samples after tribological tests and static heated oil-immersion tests to untested reference samples. The approach was chosen to further understand the influence of both microstructural deformation as well as steel-oil contact on the hydrogen absorption and trapping behaviour of 100Cr6. The tribological test showed a stable friction behaviour and mild wear which was dominated by local plastic deformation of surface asperities. Despite the mild wear, a change in de-trapping temperatures was found for tribotested samples compared to oil-immersed and untested reference samples. This finding indicates that even mild tribotesting conditions alter the hydrogen trapping behaviour of 100Cr6 bearing steel.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"72 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11249-024-01871-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141172942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of TiC/Bi on Self-Lubricating Properties of Al–Bi-TiC Alloy TiC/Bi 对 Al-Bi-TiC 合金自润滑性能的影响

IF 2.9 3区工程技术

Tribology Letters Pub Date : 2024-05-25 DOI: 10.1007/s11249-024-01868-y

Jilin Miao, Yanguo Yin, Congmin Li, Ming Xu, Rongrong Li, Xiaoliang Fang, Shan Huang, Qi Chen

引用次数: 0

Tribological and Wear Properties of Cu-Based Composite Reinforced by Core–Shell Structure in Multi-disk Clutch 核壳结构增强的铜基复合材料在多盘离合器中的摩擦学和磨损特性

IF 2.9 3区工程技术

Tribology Letters Pub Date : 2024-05-21 DOI: 10.1007/s11249-024-01844-6

Yi Dong, Biao Ma, Cenbo Xiong, Qin Zhao, Hao Chen, Yi Zhang, GuoXin Xie

引用次数: 0

Quantitative Relationship Between Sliding-Generated Acoustic Emission and Friction Conditions at Bolted Joint Interfaces 滑动产生的声发射与螺栓连接界面摩擦条件之间的定量关系

IF 2.9 3区工程技术

Tribology Letters Pub Date : 2024-05-17 DOI: 10.1007/s11249-024-01866-0

Jiaying Sun, Dongwu Li, Huiyi Yang, Chao Xu

{"title":"Quantitative Relationship Between Sliding-Generated Acoustic Emission and Friction Conditions at Bolted Joint Interfaces","authors":"Jiaying Sun, Dongwu Li, Huiyi Yang, Chao Xu","doi":"10.1007/s11249-024-01866-0","DOIUrl":"10.1007/s11249-024-01866-0","url":null,"abstract":"<div><p>Bolted joints are widely used in various engineering structures. The bolted joint may become loosening under long-term oscillating load, and cause reciprocating friction between the contact interfaces. Acoustic emission (AE) is a phenomenon of rapid release of transient elastic waves, which will be generated continuously during the reciprocating friction. The friction conditions will affect the characteristics of the contact interface and the related AE signals. Therefore, analyzing the quantitative relationship between friction conditions and AE signal is significant for applying AE technique in bolt loosening monitoring. However, researches on the relationship between AE Vrms and friction operating parameters are mostly focused on rotating machineries currently, whether the obtained conclusions are suitable for bolted joints is not clear. This paper finds that the commonly used quantitative relationship between the AE Vrms and friction operating parameters is not suitable for bolted joint structures by comparing the theoretical and experimental AE Vrms. The relationship is then modified through exponential parameter fitting and verified using the same experiments in this paper. The results show that the modified equation can accurately describe the quantitative relationship between the AE Vrms and the friction operating parameters, thus revealing the mechanism of acoustic emission signals generated during the gross-slip.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"72 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140965319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insights into the Tribological Properties and Electrical Conductivity of Cu–C Coating Under Grease Lubrication 对油脂润滑下 Cu-C 涂层的摩擦学特性和导电性的深入研究

IF 2.9 3区工程技术

Tribology Letters Pub Date : 2024-05-09 DOI: 10.1007/s11249-024-01855-3

Kuo Yang, Yanqiu Xia, Yi Zhang, Wenhao Chen, Xin Feng

{"title":"Insights into the Tribological Properties and Electrical Conductivity of Cu–C Coating Under Grease Lubrication","authors":"Kuo Yang, Yanqiu Xia, Yi Zhang, Wenhao Chen, Xin Feng","doi":"10.1007/s11249-024-01855-3","DOIUrl":"10.1007/s11249-024-01855-3","url":null,"abstract":"<div><p>In this paper, a Cu–C coating was prepared on a copper substrate through a magnetron sputtering coating process, and the effect of a composite grease containing WS<sub>2</sub> and MoS<sub>2</sub> on its tribological behavior and electrical conductivity was studied. Experimental results revealed that the Cu–C coating exhibited certain friction-reducing effects under dry sliding conditions with a 5 N load. In the lubricated state with polyurea-based grease, the Cu–C coating demonstrated lower friction coefficients and contact resistances at 2 N and 5 N loads, accompanied by reduced wear rates, indicating a synergistic effect between the lubricant and the coating, enhancing the friction-reducing performance. Furthermore, the incorporation of additives such as WS<sub>2</sub> and MoS<sub>2</sub> can effectively decrease both friction and contact resistance. Notably, 1% WS<sub>2</sub> grease, in combination with Cu–C coating, exhibits superior compatibility, resulting in optimized tribological properties and electrical conductivity. Therefore, the results of this study suggest that the combination of Cu–C coatings with WS<sub>2</sub> grease can effectively improve the electrical conductivity and friction-reducing and anti-wear capabilities of Cu–Cu sliding pairs, providing an effective solution for enhancing the electrical conductivity of electric vehicle connectors and improving the overall efficiency of the battery system.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"72 2","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140927707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Temperature on the Current-Carrying Tribological Behaviour of C/Cu Contact Pairs in High Humidity Environments 温度对高湿度环境中铜/铜接触对载流摩擦学行为的影响

IF 2.9 3区工程技术

Tribology Letters Pub Date : 2024-05-07 DOI: 10.1007/s11249-024-01856-2

De-Hui Ji, Li Xiao, Qiang Hu, Siyang Chen, Qiuping Li, Mingxue Shen

{"title":"The Effect of Temperature on the Current-Carrying Tribological Behaviour of C/Cu Contact Pairs in High Humidity Environments","authors":"De-Hui Ji, Li Xiao, Qiang Hu, Siyang Chen, Qiuping Li, Mingxue Shen","doi":"10.1007/s11249-024-01856-2","DOIUrl":"10.1007/s11249-024-01856-2","url":null,"abstract":"<div><p>The environmental temperature alters the frictional behaviour by changing the state of the current-carrying contact interface, which makes the electrical contact invalid. In this work, the effects of three different temperatures (− 20, 0, 20 °C) on the current-carrying tribological behaviour of C–Cu tribo-pairs in high humidity environment (85%) were discussed. The evolution laws of friction coefficient, wear volume, contact surface properties, and contact resistance of tribo-pairs were studied, and the current-carrying wear mechanism of C–Cu at low temperature was analyzed in depth. The variation of friction coefficient with temperature shows a similar rule before and after current-carrying, that is, regardless of the current, the friction coefficient increases as temperature falls. However, the average friction coefficient at each temperature is lower than that without current. Although it will hasten the material surface's oxidation, a drop in temperature will effectively lessen the transfer behaviour of copper to carbon surface and reduce the wear volume of carbon materials. The amount of copper transferred increases as current rises. Compared with current, the change of temperature has a greater impact on the damage of tribo-pairs. At room temperature, the contact resistance under high current is greater than that of low current. However, the rule is just the opposite under low temperature (0 and − 20 °C). In addition, at 0 °C, although the contact resistance of low current (5 A) decreases significantly in the early stage of friction, its average resistance and fluctuation amplitude are the largest. As the temperature decreases, the current-carrying wear mechanism of C–Cu contact pairs gradually changes from adhesive wear to fatigue wear.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"72 2","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140927517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Lubricity of Calcium Sulfonate on ZnDTP and MoDTC 磺酸钙对 ZnDTP 和 MoDTC 润滑性的影响

IF 2.9 3区工程技术

Tribology Letters Pub Date : 2024-05-06 DOI: 10.1007/s11249-024-01860-6

Yumi Hayashi, Kaisei Sato, Shinya Sasaki

{"title":"The Effect of Lubricity of Calcium Sulfonate on ZnDTP and MoDTC","authors":"Yumi Hayashi, Kaisei Sato, Shinya Sasaki","doi":"10.1007/s11249-024-01860-6","DOIUrl":"10.1007/s11249-024-01860-6","url":null,"abstract":"<div><p>Reduction of friction and wear by lubrication is necessary to improve the efficiency and prolong the lifespan of industrial machinery. However, several aspects regarding the lubrication effects in additive-combined oil are still unresolved. This study focuses on the effects of combining zinc dialkyldithiophosphate (ZnDTP), molybdenum dithiocarbamate (MoDTC), and Ca sulfonate on the frictional behavior of poly-α-olefin 4 (PAO4) lubricant oils. Ball-on-disk friction tests demonstrated that the exclusive addition of high-base Ca sulfonate solution reduced friction and wear of the lubricating oil. When combined with ZnDTP and MoDTC, the friction coefficients of PAO with high-base and low-base Ca sulfonate are affected by competitive reactions on the sliding surface. Quartz crystal microbalance with dissipation monitoring measurements suggests that high-base Ca sulfonate forms a stronger adsorption film than low-base Ca sulfonate. Atomic force microscope observations confirmed that the addition of low-base Ca sulfonate reduced friction and wear, whereas high-base Ca sulfonate induced competitive reactions with ZnDTP and MoDTC. This study provides valuable insights into the effects of the combination of additives on the lubricity of PAO and their impact on friction and wear characteristics, which are valuable for the design of suitable lubricants for industrial machinery.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"72 2","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11249-024-01860-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140888977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to: Roughness Evolution Induced by Third-Body Wear 更正：第三体磨损引起的粗糙度演变

IF 2.9 3区工程技术

Tribology Letters Pub Date : 2024-05-03 DOI: 10.1007/s11249-024-01864-2

Joaquin Garcia-Suarez, Tobias Brink, Jean-François Molinari

引用次数: 0