Michał Gdula , Grażyna Mrówka-Nowotnik , Andrzej Nowotnik
{"title":"Modeling and comprehensive mechanism analysis of torus milling cutter wear in multi-axis milling of Ni-based superalloy using the active cutting edge segment change technique","authors":"Michał Gdula , Grażyna Mrówka-Nowotnik , Andrzej Nowotnik","doi":"10.1016/j.triboint.2025.110509","DOIUrl":"10.1016/j.triboint.2025.110509","url":null,"abstract":"<div><div>Tool wear is a significant challenge in the milling of difficult-to-cut materials such as Ni-based superalloys, as it directly impacts the machining process and surface integrity. In multi-axis torus milling, the complex and varying cutting conditions of cutter-workpiece engagement make predicting wear particularly difficult. This paper proposes models for predicting the life and flank wear of a torus milling cutter equipped with round cutting inserts in a multi-axis milling process. A novel technique for changing the active segment of the cutting edge, specifically designed for torus milling cutters, was used. The cutter-workpiece engagement (CWE) zone was determined and equal width cutting belts were determined on the torus surface. Analysis of wear mechanisms revealed the uneven distribution of flank wear. Based on cutting tests under defined CWE and high-speed machining conditions, predictive models for tool life and flank wear were developed for each active cutting edge segment. These models were calibrated using multi-axis milling experiments on the Inconel718 superalloy. Results demonstrate that the predictive models achieve high accuracy, with average percentage errors below 15 % for tool life and 13 % for flank wear. The models enable precise predictions of torus milling cutter life and flank wear in multi-axis milling of Inconel718 while utilizing the active cutting edge segment change technique. Analysis of wear mechanisms indicated that abrasive and adhesive wear dominates, and flaking and notching wear was also observed.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"204 ","pages":"Article 110509"},"PeriodicalIF":6.1,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wenguang Liu , Liejiang Wei , Yan Zhang , Shengsheng Chen , Gengrui Zhao , Gui Gao , Honggang Wang
{"title":"Investigation of tribological behavior and failure mechanisms of PEEK-based composites, Babbitt alloy, and CuSn10Pb10 bimetal for wind turbine main shaft sliding bearings under simulated operational conditions","authors":"Wenguang Liu , Liejiang Wei , Yan Zhang , Shengsheng Chen , Gengrui Zhao , Gui Gao , Honggang Wang","doi":"10.1016/j.triboint.2025.110522","DOIUrl":"10.1016/j.triboint.2025.110522","url":null,"abstract":"<div><div>As wind turbine capacities increase, the demand for improved stability and reliability has intensified. Traditional rolling bearings used as wind turbine main bearings often prove insufficient under conditions of the low speeds, heavy loads, frequent start-stop cycles, and complex load environments, along with significantly high maintenance costs. Sliding bearings offer a promising alternative, yet research on high-performance materials tailored for Wind Turbine Main Shaft Sliding Bearings (WTMSSB) is limited. This study investigates the tribological behavior and failure mechanisms of several sliding bearing materials under complex operational conditions. Multi-condition friction and wear tests were conducted to evaluate the friction coefficient, friction temperature rise, and volume wear rate of Babbitt alloy (ZChSnSb11–6), bimetal CuSn10Pb10, pure PEEK, and the 10 % PTFE-filled modified PEEK composites. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were employed to analyze the microstructural features and elemental distributions on wear surfaces and wear debris. The 10 % PTFE-filled modified PEEK composite demonstrated superior self-lubricating properties and wear resistance under both lubricated and dry friction conditions, showing strong potential for complex load environments. While Babbitt alloy exhibited low friction under oil lubrication, its high wear rate and susceptibility to adhesive failure under dry conditions limit its applicability. Bimetal CuSn10Pb10 displayed consistently high friction and poor wear resistance across all conditions, with a tendency for seizure. This study provides robust experimental evidence for optimizing sliding bearing materials for WTMSSB and offers guidance for future material development and practical applications.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"204 ","pages":"Article 110522"},"PeriodicalIF":6.1,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hui Cen , Nicola de Laurentis , Norbert Bader , Piet M. Lugt
{"title":"Effect of thermal aging on the grease film thickness in ball bearings","authors":"Hui Cen , Nicola de Laurentis , Norbert Bader , Piet M. Lugt","doi":"10.1016/j.triboint.2025.110511","DOIUrl":"10.1016/j.triboint.2025.110511","url":null,"abstract":"<div><div>In this paper the effect of thermal aging of grease on the film thickness in a ball bearing is studied by aging two different types of greases in an oven for various duration and by measuring their film thicknesses in a sealed for life ball bearing and single contact. The results show that the bearing film thickness initially remains constant for a very long time. Thermal aging leads to evaporation and oxidation. Tests with thermally aged grease show that the film thickness will only change in the case oxidation has occurred. After this, the level of starvation decreases despite an increase of viscosity and decrease of bleed properties. Traction increases, which would result in a loss of lubricity.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"204 ","pages":"Article 110511"},"PeriodicalIF":6.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vivek Kashyap , Nicolò Giuseppe Di Novo , Nicola Maria Pugno
{"title":"Frictional anisotropy of ant legs and related inspired 3D-printed textured surfaces with self-locomotion on ultrasound vibrating substrates","authors":"Vivek Kashyap , Nicolò Giuseppe Di Novo , Nicola Maria Pugno","doi":"10.1016/j.triboint.2025.110513","DOIUrl":"10.1016/j.triboint.2025.110513","url":null,"abstract":"<div><div>Micro-spike textures in ant’s leg were investigated using Atomic Force Microscopy and frictional anisotropy was explored. Bio-inspired textured surfaces were 3D-printed with different material properties and orientation. Fundamental tribological test was carried out to evaluate static and dynamic frictional behavior of printed textures. Results showed frictional anisotropy; forward sliding friction was lower compared with backward direction, similar to ant’s leg. Uni-directional driving speed was evaluated under ultrasonic vibration. Ant and all textured samples showed driving capability. 3D-printed sample with a maximum speed of ∼165 mm/s was the stiffer one (Vero-Black) with optimum orientation (65°). Texture sample and plate contact interface was analyzed for driving mechanism using high-speed camera. Material properties, structural mechanics, and friction significantly affect locomotive speed.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"204 ","pages":"Article 110513"},"PeriodicalIF":6.1,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Guangpei Lin , Zhaobing Cai , Bingwen Lu , Le Gu , Yueliang Wang , Xingchen Yan , Hao Qiu , Junfei Guo , Zhen Dong , Fuhai Li
{"title":"Enhanced wear resistance of laser cladded WC-Ni composite coatings by picosecond laser surface texturing","authors":"Guangpei Lin , Zhaobing Cai , Bingwen Lu , Le Gu , Yueliang Wang , Xingchen Yan , Hao Qiu , Junfei Guo , Zhen Dong , Fuhai Li","doi":"10.1016/j.triboint.2025.110517","DOIUrl":"10.1016/j.triboint.2025.110517","url":null,"abstract":"<div><div>In this work, a picosecond laser was applied to prepare pit textures on laser cladded WC-Ni composite coatings with 20 wt% WC content. The mechanism of laser interaction with the composite phase of the coating was investigated, and the effect of surface texture on tribological behavior and wear resistance was further analyzed. The constituent phases of the textured coating remain essentially the same as the original coating. The presence of WC particles in the WC-Ni composite coating makes the removal mechanism of the composite coating by the picosecond laser consist of thermal ablation of the Ni-based metallic binder phase and phase explosion of the WC particle phase. The hardness of the binder phase region near the texture is enhanced (>500 HV<sub>0.2</sub>) due to laser thermal effect. The friction coefficient (about 29.24 %) and wear rate (about 53.56 %) were significantly reduced compared to the original coating. It can be attributed to the circular pit texture that traps the abrasive debris and stores the lubricant, indicating that the surface texture plays a positive role in tribological performance.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"204 ","pages":"Article 110517"},"PeriodicalIF":6.1,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Muhammad Imam Ammarullah , Muhammad Kozin , Mohamad Izzur Maula , M. Danny Pratama Lamura , Hasyid Ahmad Wicaksono , Athanasius Priharyoto Bayuseno , Jamari Jamari , Muhammad Hanif Ramlee
{"title":"A review of enhanced total hip prosthesis design and material bearing combination to accommodate Muslim prayer (Salat) movements: Biomechanical, biotribological, and biological perspectives","authors":"Muhammad Imam Ammarullah , Muhammad Kozin , Mohamad Izzur Maula , M. Danny Pratama Lamura , Hasyid Ahmad Wicaksono , Athanasius Priharyoto Bayuseno , Jamari Jamari , Muhammad Hanif Ramlee","doi":"10.1016/j.triboint.2025.110518","DOIUrl":"10.1016/j.triboint.2025.110518","url":null,"abstract":"<div><div>Total hip prostheses have greatly improved mobility and quality of life for patients with hip disorders. However, the unique biomechanical demands of Muslim prayer (Salat), involving complex, repetitive movements, pose challenges for standard designs. This review highlights advancements in prosthesis design, emphasizing dual mobility bearings for enhanced stability and range of motion, and Ceramic-on-Polymer (CoP) bearings for durability and reduced wear. By addressing biomechanical, biotribological, and biological factors, these innovations optimize prosthetic performance, meeting the functional and cultural needs of Muslim patients while ensuring long-term durability and satisfaction.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"205 ","pages":"Article 110518"},"PeriodicalIF":6.1,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shouyao Liu , Jian Wu , Fei Teng , Shixue He , Xuebo Yuan , Stanisław Stupkiewicz , Youshan Wang
{"title":"Effect of surface adhesion characteristics on stick-slip mechanism of flexible film/substrate bilayer structure: Multiscale insight","authors":"Shouyao Liu , Jian Wu , Fei Teng , Shixue He , Xuebo Yuan , Stanisław Stupkiewicz , Youshan Wang","doi":"10.1016/j.triboint.2025.110520","DOIUrl":"10.1016/j.triboint.2025.110520","url":null,"abstract":"<div><div>The key to tactile sensors' sliding perception is the stick-slip modulation of the soft material through surface design. Herein, in-situ sliding tests were conducted on polydimethylsiloxane (PDMS) film/substrate bilayer structures (PF/SBS) with three surface adhesion characteristics tailored by crosslinking degrees of PDMS film. Microscopic damage mechanisms during Schallamach wave propagation were analyzed using mixed-mode cohesive contact models. Intermolecular interaction mechanisms at microscopic crack tips were also explored using PDMS-Silica (SiO<sub>2</sub>) molecular models with varying PDMS crosslinking degrees. The Schallamach waves and tangential force strongly depended on the crosslinking degree of PDMS film. The varying effects of crosslinking degree on normal and tangential separation mechanisms lead to a transition in Schallamach wave damage from mixed mode to Mode II during propagation.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"204 ","pages":"Article 110520"},"PeriodicalIF":6.1,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yu Shan , Xingkang Guo , Wenlin Ma , Gewen Yi , Shanhong Wan , Junyang Wang , Huwei Sun , Feng Cao
{"title":"Microstructure, high temperature mechanical properties and sliding wear behavior of (NiCrW)1-x(Bi2O3)x","authors":"Yu Shan , Xingkang Guo , Wenlin Ma , Gewen Yi , Shanhong Wan , Junyang Wang , Huwei Sun , Feng Cao","doi":"10.1016/j.triboint.2025.110514","DOIUrl":"10.1016/j.triboint.2025.110514","url":null,"abstract":"<div><div>Composite materials of (NiCrW)<sub>1-x</sub>(Bi<sub>2</sub>O<sub>3</sub>)<sub>x</sub> (x = 0, 1, 2.5, 5 wt%) were prepared using powder metallurgy techniques. The study investigated the effects of Bi<sub>2</sub>O<sub>3</sub> content on the microstructure, phase composition, high-temperature mechanical properties, and tribological performance over a wide temperature range of the composites. The results indicate that during the hot pressing sintering process, Bi<sub>2</sub>O<sub>3</sub> in the composites undergoes a decomposition reaction, leading to the formation of new phases such as NiBi, NiBi<sub>3</sub>, and Cr<sub>2</sub>O<sub>3</sub>, which enhance the high-temperature lubrication and wear resistance of the composites. However, this transformation has a detrimental effect on the mechanical properties of the composites, altering the fracture mechanism from microporous aggregation-type fracture to predominantly cleavage and intergranular fractures. Thanks to the formation of lubricating phases like NiBi, the addition of 1 wt% Bi<sub>2</sub>O<sub>3</sub> effectively reduces the wear rate of the composites at room temperature. At 800 °C, NiBi is reoxidized during the high-temperature friction process, forming a friction layer composed of Bi<sub>2</sub>O<sub>3</sub> and NiO on the wear surface of the composites, effectively lowering the friction coefficient at high temperatures.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"204 ","pages":"Article 110514"},"PeriodicalIF":6.1,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhou Lan , Zhengyan Chen , Maoyu Zhang , Wei Huang , Du Ding , Baoli Fan , Hongxia Yan , Yanling Jin , Zhenfeng Sun , Fang Ren , Penggang Ren
{"title":"Improved mechanical and tribological properties of epoxy resin with new hyperbranched polysiloxane grafted MXene/Ag hybrids","authors":"Zhou Lan , Zhengyan Chen , Maoyu Zhang , Wei Huang , Du Ding , Baoli Fan , Hongxia Yan , Yanling Jin , Zhenfeng Sun , Fang Ren , Penggang Ren","doi":"10.1016/j.triboint.2025.110515","DOIUrl":"10.1016/j.triboint.2025.110515","url":null,"abstract":"<div><div>In this study, different MXene/Ag hybrids were synthesized via an in-situ reduction method, followed by a “one-pot” strategy to design hydroxyl-terminated hyperbranched polysiloxane (HBPSi-OH) as a “bridging” structure to enhance the compatibility between MXene/Ag and epoxy resin (EP), forming the HMA/EP composite. Benefiting from the rigidity-flexibility synergistic effect between MXene/Ag and HBPSi-OH, 0.6 wt% HMA-2/EP composite exhibited the highest impact strength (35.3 kJ/m<sup>2</sup>) and flexural strength (146.3 MPa). Meanwhile, its average coefficient of friction (COF) and volume wear rate were significantly reduced by 32.8 % and 96.0 %, respectively, compared to pure EP resin. This work offers valuable insights for advancing high-performance polymer composites in the field of tribology.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"204 ","pages":"Article 110515"},"PeriodicalIF":6.1,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Prediction of grinding parameters for additively manufactured Ti-6Al-4V alloy using machine learning techniques","authors":"Aditya Anand, Santosh Kumar, Pankaj Kumar Singh","doi":"10.1016/j.triboint.2025.110512","DOIUrl":"10.1016/j.triboint.2025.110512","url":null,"abstract":"<div><div>In this study advanced machine learning (ML) techniques - Random Forest, Gradient Boosting, XGBoost, and Neural Network have been used to develop predictive models for grinding parameters in additively manufactured Ti-6Al-4V alloy. It examines the key process variables, including table speed, depth of cut, and environmental conditions (dry, wet, and cryo) on grinding forces, temperature, and surface roughness. The entire dataset, comprising 99 experimental runs is evaluated using the K-fold cross-validation technique to ensure comprehensive model training and validation. The performance of each algorithm is compared using metrics like R<sup>2</sup> and Mean Square Error, providing a comparison of predictive accuracy. This finding offers the role of cooling conditions and the potential of ML for enhancing predictive accuracy in advanced manufacturing processes.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"204 ","pages":"Article 110512"},"PeriodicalIF":6.1,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}