Friction最新文献_第9页

Erratum to: Tribological behaviour of Ti3C2Tx nano-sheets: Substrate-dependent tribo-chemical reactions 勘误：Ti3C2Tx 纳米片的摩擦学行为：依赖于基底的三化学反应

IF 6.8 1区工程技术

Friction Pub Date : 2023-12-14 DOI: 10.1007/s40544-023-0859-y

Alberto Rota, Nicolas Bellina, Bo Wang, Andreas Rosenkranz

引用次数: 0

Classification and spectrum optimization method of grease based on infrared spectrum 基于红外光谱的油脂分类及光谱优化方法

IF 6.8 1区工程技术

Friction Pub Date : 2023-12-05 DOI: 10.1007/s40544-023-0786-y

Xin Feng, Yanqiu Xia, Peiyuan Xie, Xiaohe Li

{"title":"Classification and spectrum optimization method of grease based on infrared spectrum","authors":"Xin Feng, Yanqiu Xia, Peiyuan Xie, Xiaohe Li","doi":"10.1007/s40544-023-0786-y","DOIUrl":"https://doi.org/10.1007/s40544-023-0786-y","url":null,"abstract":"The infrared (IR) absorption spectral data of 63 kinds of lubricating greases containing six different types of thickeners were obtained using the IR spectroscopy. The Kohonen neural network algorithm was used to identify the type of the lubricating grease. The results show that this machine learning method can effectively eliminate the interference fringes in the IR spectrum, and complete the feature selection and dimensionality reduction of the high-dimensional spectral data. The 63 kinds of greases exhibit spatial clustering under certain IR spectrum recognition spectral bands, which are linked to characteristic peaks of lubricating greases and improve the recognition accuracy of these greases. The model achieved recognition accuracy of 100.00%, 96.08%, 94.87%, 100.00%, and 87.50% for polyurea grease, calcium sulfonate composite grease, aluminum (Al)-based grease, bentonite grease, and lithium-based grease, respectively. Based on the different IR absorption spectrum bands produced by each kind of lubricating grease, the three-dimensional spatial distribution map of the lubricating grease drawn also verifies the accuracy of classification while recognizing the accuracy. This paper demonstrates fast recognition speed and high accuracy, proving that the Kohonen neural network algorithm has an efficient recognition ability for identifying the types of the lubricating grease.","PeriodicalId":12442,"journal":{"name":"Friction","volume":" 50","pages":""},"PeriodicalIF":6.8,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138485491","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}

引用次数: 0

Study on frictional behavior of SiCf/SiC composite clad tube clamping condition under nuclear irradiation 核辐照下SiCf/SiC复合材料包层管夹紧摩擦行为研究

IF 6.8 1区工程技术

Friction Pub Date : 2023-12-05 DOI: 10.1007/s40544-023-0805-z

Chenglong Xiao, Liangliang Shen, Tianqi Zhu, Jianbo Tang, Ximing Xie, Xinyu Fan, Jian Xu, Zhiying Ren

{"title":"Study on frictional behavior of SiCf/SiC composite clad tube clamping condition under nuclear irradiation","authors":"Chenglong Xiao, Liangliang Shen, Tianqi Zhu, Jianbo Tang, Ximing Xie, Xinyu Fan, Jian Xu, Zhiying Ren","doi":"10.1007/s40544-023-0805-z","DOIUrl":"https://doi.org/10.1007/s40544-023-0805-z","url":null,"abstract":"Silicon carbide fiber reinforced silicon carbide matrix (SiCf/SiC) composite is the key cladding material of nuclear fuel, which determines the safety and reliability of nuclear fuel storage and transportation. The replacement of its storage and transportation scenario needs to be completed by the manipulator, but the application of SiCf/SiC wear, fracture, and nuclear leakage in the snatching process of brittle-flexible-rigid contact in the irradiation environment has been seriously restricted due to unclear understanding of the damage mechanism. Therefore, the effects of irradiation dose and clamping load on the friction characteristics of the contact interface between SiCf/SiC clad tube are studied in this paper, and the effects of irradiation parameters and clamping force on the static friction coefficient of the contact interface between the clad tube and flexible nitrile are obtained. Based on the Greenwood-Williamson tribological model, a numerical model of the shape and structure of the contact micro-convex at the micro-scale of the clamping interface is constructed by introducing the multi-surface integral, and finally verified by experiments. The research results show that there is a unique “Irradiation suppression zone” under the clamping condition of SiCf/SiC cladding tube under the nuclear irradiation environment, and the growth of static friction coefficient slows down until stagnates after irradiation reaches a certain extent (600 kGy), and there will be a decline when the irradiation dose continues to increase, among which the clamping force of 15.2 N within the irradiation interval of 1,000 kGy can meet the safety of nuclear environment operation. The results of this paper can provide an important theoretical basis and application guidance for the safe operation of SiCf/SiC cladding tubes in the storage and transportation clamping process.","PeriodicalId":12442,"journal":{"name":"Friction","volume":" 51","pages":""},"PeriodicalIF":6.8,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138485490","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}

引用次数: 0

Nano-frictional mechano-reinforcing porous nanowires scaffolds 纳米摩擦机械增强多孔纳米线支架

IF 6.8 1区工程技术

Friction Pub Date : 2023-12-04 DOI: 10.1007/s40544-023-0815-x

Licheng Hua, Conghu Hu, Jingkang Zhang, Jin Li, Chenjie Gu, Bin Huang, Guangyong Li, Jianke Du, Wanlin Guo

引用次数: 0

Finite element analysis and experimental validation of polymer–metal contacts in block-on-ring configuration 块环结构聚合物-金属接触的有限元分析与实验验证

IF 6.8 1区工程技术

Friction Pub Date : 2023-12-04 DOI: 10.1007/s40544-023-0795-x

K. Y. Eayal Awwad, Khosro Fallahnezhad, B. F. Yousif, Ahmad Mostafa, Omar Alajarmeh, A. Shalwan, Xuesen Zeng

{"title":"Finite element analysis and experimental validation of polymer–metal contacts in block-on-ring configuration","authors":"K. Y. Eayal Awwad, Khosro Fallahnezhad, B. F. Yousif, Ahmad Mostafa, Omar Alajarmeh, A. Shalwan, Xuesen Zeng","doi":"10.1007/s40544-023-0795-x","DOIUrl":"https://doi.org/10.1007/s40544-023-0795-x","url":null,"abstract":"The wear profile analysis, obtained by different tribometers, is essential to characterise the wear mechanisms. However, most of the available methods did not take the stress distribution over the wear profile in consideration, which causes inaccurate analysis. In this study, the wear profile of polymer–metal contact, obtained by block-on-ring configuration under dry sliding conditions, was analysed using finite element modelling (FEM) and experimental investigation. Archard’s wear equation was integrated into a developed FORTRAN–UMESHMOTION code linked with Abaqus software. A varying wear coefficient (k) values covering both running-in and steady state regions, and a range of applied loads involving both mild and severe wear regions were measured and implemented in the FEM. The FEM was in good agreement with the experiments. The model reproduced the stress distribution profiles under variable testing conditions, while their values were affected by the sliding direction and maximum wear depth (hmax). The largest area of the wear profile, exposed to the average contact stresses, is defined as the normal zone. Whereas the critical zones were characterized by high stress concentrations reaching up to 10 times of that at the normal zone. The wear profile was mapped to identify the critical zone where the stress concentration is the key point in this definition. The surface features were examined in different regions using scanning electron microscope (SEM). Ultimately, SEM analysis showed severer damage features in the critical zone than that in the normal zone as proven by FEM. However, the literature data presented and considered the wear features the same at any point of the wear profile. In this study, the normal zone was determined at a stress value of about 0.5 MPa, whereas the critical zone was at about 5.5 MPa. The wear behaviour of these two zones showed totally different features from one another.\u0000","PeriodicalId":12442,"journal":{"name":"Friction","volume":" 68","pages":""},"PeriodicalIF":6.8,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138485416","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}

引用次数: 0

Hydration lubrication modulated by water structure at TiO2-aqueous interfaces 水结构对tio2 -水界面水化润滑的调节作用

IF 6.8 1区工程技术

Friction Pub Date : 2023-12-04 DOI: 10.1007/s40544-023-0750-x

Pingsu Ma, Yuan Liu, Ke Han, Yu Tian, Liran Ma

{"title":"Hydration lubrication modulated by water structure at TiO2-aqueous interfaces","authors":"Pingsu Ma, Yuan Liu, Ke Han, Yu Tian, Liran Ma","doi":"10.1007/s40544-023-0750-x","DOIUrl":"https://doi.org/10.1007/s40544-023-0750-x","url":null,"abstract":"The nature of solid–liquid interfaces is of great significance in lubrication. Remarkable advances have been made in lubrication based on hydration effects. However, a detailed molecular-level understanding is still lacking. Here, we investigated water molecule behaviors at the TiO2–aqueous interfaces by the sum-frequency generation vibrational spectroscopy (SFG-VS) and atomic force microscope (AFM) to elucidate the fundamental role of solid–liquid interfaces in lubrication. Combined contributions of water structures and hydration effects were revealed, where water structures played the dominant role in lubrication for TiO2 surfaces of varying hydrophilicity, while hydration effects dominated with the increasing of ion concentrations. Superior lubrication is observed on the initial TiO2 surfaces with strongly H-bonded water molecules compared to the hydrophilic TiO2 surfaces with more disordered water. The stable ordered water arrangement with strong hydrogen bonds and the shear plane occurring between the ordered water layer and subsequent water layer may play a significant role in achieving lower friction. More adsorbed hydrated molecules with the increasing ionic concentration perturb ordered water but lead to the enhancement of hydration effects, which is the main reason for the improved lubrication for both TiO2. This work provides more insights into the detailed molecular-level understanding of the mechanism of hydration lubrication.\u0000","PeriodicalId":12442,"journal":{"name":"Friction","volume":" 49","pages":""},"PeriodicalIF":6.8,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138485492","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}

引用次数: 0

Generating synthetic as-built additive manufacturing surface topography using progressive growing generative adversarial networks 利用渐进生长生成式对抗网络生成合成竣工增材制造表面地形图

IF 6.8 1区工程技术

Friction Pub Date : 2023-12-04 DOI: 10.1007/s40544-023-0826-7

Junhyeon Seo, Prahalada Rao, B. Raeymaekers

引用次数: 0

Photoinduced superlubricity on TiO2 surfaces 二氧化钛表面的光诱导超润滑性

IF 6.8 1区工程技术

Friction Pub Date : 2023-12-04 DOI: 10.1007/s40544-023-0736-8

Ke Han, Liran Ma, Yu Tian, Jianbin Luo

引用次数: 0

Molecular design of recyclable thermosetting polyimide and its composite with excellent mechanical and tribological properties 具有优异机械和摩擦学特性的可回收热固性聚酰亚胺及其复合材料的分子设计