Biosurface and Biotribology最新文献_第6页

Effect of plantar pressure on stepping friction under cross-slope condition 横坡条件下足底压力对踩踏摩擦力的影响

Biosurface and Biotribology Pub Date : 2022-02-12 DOI: 10.1049/bsb2.12032

Yanzhao Wang, Deqiang Chen, Yongzhen Zhang, Yongping Niu, Xiaohui Yang

{"title":"Effect of plantar pressure on stepping friction under cross-slope condition","authors":"Yanzhao Wang, Deqiang Chen, Yongzhen Zhang, Yongping Niu, Xiaohui Yang","doi":"10.1049/bsb2.12032","DOIUrl":"10.1049/bsb2.12032","url":null,"abstract":"There are various walking pavements in daily life. Slip accidents will happen if required friction for safe walking is greater than available friction between the foot and ground surface. Existing researches mostly focus on horizontal or slope pavements, whereas the cross-slope walkways are less. A self-developed gait friction test platform was used to test friction, distribution of plantar pressure and spatiotemporal parameters of human walking under cross-slope condition. With the increase of cross-slope angles, the mediolateral friction increases (R\u0000 2 = 0.972, P < 0.001), the anterior-posterior friction shows no significant change (R\u0000 2 = 0.758, P = 0.017), the normal pressure decreases (R\u0000 2 = 0.915, P = 0.007), and the high foot is more prone to slip and fall than low foot. Therefore, plantar pressure distribution of both feet was shifted to left. The gait cycle was prolonged (P < 0.001), swing period of both feet decreased (P = 0.029) and support period increased (P = 0.015) with the increase of cross-slope angle.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"8 1","pages":"15-22"},"PeriodicalIF":0.0,"publicationDate":"2022-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46852443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrophilic polymer-coated PVC surface for reduced cell and bacterial adhesions 亲水聚合物涂层PVC表面，减少细胞和细菌粘附

Biosurface and Biotribology Pub Date : 2022-02-06 DOI: 10.1049/bsb2.12033

Rashed Almousa, Xin Wen, Sungsoo Na, Gregory Anderson, Dong Xie

{"title":"Hydrophilic polymer-coated PVC surface for reduced cell and bacterial adhesions","authors":"Rashed Almousa, Xin Wen, Sungsoo Na, Gregory Anderson, Dong Xie","doi":"10.1049/bsb2.12033","DOIUrl":"10.1049/bsb2.12033","url":null,"abstract":"Hydrophilic polymers are very useful in biomedical applications. In this study, biocompatible polyethylene glycol (PEG) and polyvinylpyrrolidone (PVP) polymers end-capped with succinimidyl groups were either modified or synthesised and attached to polyvinylchloride surfaces. The modified surfaces were evaluated with cell adhesion and bacterial adhesion. 3T3 mouse fibroblast cells and three bacteria species were used to evaluate surface adhesion activity. Results showed that the modified surface exhibited significantly reduced 3T3 cell adhesion with a 50%–69% decrease for PEG and a 64%–81% for PVP, as compared to unmodified polyvinylchloride. The modified surface also showed significantly reduced bacterial attachment with 22%–78%, 18%–76% and 20%–75% decrease for PEG and 22%–76%, 18%–76% and 20%–73% for PVP to Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa, respectively, as compared to unmodified polyvinylchloride. It seems that an appropriate chain length or molecular weight (neither the longest nor the shortest chain length) determines the lowest cell and bacterial adhesion in terms of PEG. On the other hand, a mixture of polymers with different chain lengths exhibited the lowest cell and bacterial adhesion in terms of PVP.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"8 1","pages":"34-43"},"PeriodicalIF":0.0,"publicationDate":"2022-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45056525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Tribo-corrosion mechanisms and electromechanical behaviours for metal implants materials of CoCrMo, Ti6Al4V and Ti15Mo alloys CoCrMo、Ti6Al4V和Ti15Mo合金金属植入材料的摩擦学机制和机电性能

Biosurface and Biotribology Pub Date : 2022-01-26 DOI: 10.1049/bsb2.12031

Hongxiang Wang, Jingjing Zheng, Xiaolei Sun, Yong Luo

{"title":"Tribo-corrosion mechanisms and electromechanical behaviours for metal implants materials of CoCrMo, Ti6Al4V and Ti15Mo alloys","authors":"Hongxiang Wang, Jingjing Zheng, Xiaolei Sun, Yong Luo","doi":"10.1049/bsb2.12031","DOIUrl":"10.1049/bsb2.12031","url":null,"abstract":"Corrosion and wear play significant roles in the aseptic loosening of artificial hip joints for the long-term service. In this present study, tribo-corrosion tests were carried out through a reciprocating ball-on-plate system to evaluate the corrosion and wear properties of CoCrMo, Ti6Al4V and Ti15Mo alloys in a simulated body fluid (SBF) solution. It was found that the tribo-corrosion behaviours of CoCrMo/Al2O3 and Ti15Mo/Al2O3 systems had significant wear-corrosion synergistic interaction, and wear-induced corrosion was dominant. For Ti6Al4V/Al2O3 systems, their wear mechanism under SBF lubrication was a combination of abrasive, adhesive and fatigue wear. While the wear mechanism of the Ti15Mo/Al2O3 system under synergistic interaction was a combination of abrasive and adhesive wear. Finally, it was suggested that the Ti15Mo alloy would be the better alternative for metal implant applications compared with the CoCrMo alloy for the consideration of both wear and potential poisonous ions such as Co(III) and Cr(VI).","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"8 1","pages":"44-51"},"PeriodicalIF":0.0,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41384573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Digital analysis of tooth microwear, a potential application for dental microwear monitor 牙齿微磨损的数字分析，是牙齿微磨损监测的潜在应用

Biosurface and Biotribology Pub Date : 2022-01-04 DOI: 10.1049/bsb2.12030

Gang Xue, Conghu Hu, Jianke Du, Licheng Hua

引用次数: 0

The structure, formation, and effect of plasma protein layer on the blood contact materials: A review 血浆蛋白层的结构、形成及其对血液接触材料的影响

Biosurface and Biotribology Pub Date : 2021-11-19 DOI: 10.1049/bsb2.12029

Xiao Chen, Jiang Chen, Nan Huang

引用次数: 8

Friction behaviour between a laparoscopic grasper and the large intestine during minimally invasive surgery 微创手术中腹腔镜抓取器与大肠之间的摩擦行为

Biosurface and Biotribology Pub Date : 2021-11-16 DOI: 10.1049/bsb2.12028

Yan Guo, Chengmo Cai, Wei Li

{"title":"Friction behaviour between a laparoscopic grasper and the large intestine during minimally invasive surgery","authors":"Yan Guo, Chengmo Cai, Wei Li","doi":"10.1049/bsb2.12028","DOIUrl":"10.1049/bsb2.12028","url":null,"abstract":"Slippage is a common phenomenon between laparoscopic graspers and tissues during minimally invasive surgery, which may lead to inefficient surgical operations, prolonged operation time, and increased patient suffering. The stability factors related to the friction behaviour between laparoscopic graspers and the large intestine, including bio-surface liquids, pulling angle, and surface profile of graspers, were studied. The friction behaviour at the large intestine–grasper interface was tested using a UMT-II tribometer under the conditions of clamping force of 1–4 N, sliding displacement of 15 mm, and sliding velocity of 2 mm/s to simulate the grasping and pulling operations of soft tissue. The results showed that the bio-surface liquid (serum) of the large intestine significantly decreased the friction coefficient, thus reducing the grasping efficiency. A pulling angle of 15° could generate the peak frictional force and enhance the grasping stability. The frictional force increased with the ratio of the profile surface area of the grasper. These results demonstrate that the grasping stability can be improved by changing either the bio-surface liquid condition or the pulling angle. In addition, a grasper with a larger profile surface area can also prevent slippage due to its significant influence on the pressure distribution and actual contact area for tissue retention.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"8 1","pages":"58-68"},"PeriodicalIF":0.0,"publicationDate":"2021-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12028","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45947188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Numerical wear study of metal-on-ultrahigh molecular weight polyethylene-based cervical total disc arthroplasty by coupling finite element analysis and multi-body dynamics 基于有限元分析和多体动力学的金属-超高分子量聚乙烯基颈椎全椎间盘置换术磨损数值研究

Biosurface and Biotribology Pub Date : 2021-10-08 DOI: 10.1049/bsb2.12026

Hua Xin, Lei Zhang, Hao Diao, Junhong Jia, Zhongmin Jin

{"title":"Numerical wear study of metal-on-ultrahigh molecular weight polyethylene-based cervical total disc arthroplasty by coupling finite element analysis and multi-body dynamics","authors":"Hua Xin, Lei Zhang, Hao Diao, Junhong Jia, Zhongmin Jin","doi":"10.1049/bsb2.12026","DOIUrl":"10.1049/bsb2.12026","url":null,"abstract":"In this study, the effects of in vivo (head flexion-extension, lateral bending, and axial rotation) and in vitro (ISO 18192-1) working conditions on the wear of ultrahigh molecular weight polyethylene (UHWMPE)-based cervical disc prosthesis were studied via numerical simulation. A finite-element-based wear prediction framework was built by using a sliding distance and contact area dependent Archard wear law. Moreover, a pre-developed cervical spine multi-body dynamics model was incorporated to obtain the in vivo conditions. Contact mechanic analysis stated that in vitro conditions normally led to a higher contact stress and a longer sliding distance, with oval or crossing-path-typed sliding track. In contrast, in vivo conditions led to a curvilinear-typed sliding track. In general, the predicted in vivo wear rate was one order of magnitude smaller than that of in vitro. According to the yearly occurrence of head movement, the estimated total in vivo wear rate was 0.595 mg/annual. While, the wear rate given by the ISO standard test condition was 3.32 mg/annual. There is a significant impact of loading and kinematic condition on the wear of UHMWPE prosthesis. The work conducted in the present study provided a feasible way for quantitatively assessing the wear of joint prosthesis.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"251-260"},"PeriodicalIF":0.0,"publicationDate":"2021-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42669959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Interactions between hyaluronic acid and CoCrMo alloy surface in simulated synovial fluids 模拟滑液中透明质酸与CoCrMo合金表面的相互作用

Biosurface and Biotribology Pub Date : 2021-10-03 DOI: 10.1049/bsb2.12027

Simona Radice, Gretchen Tibbits, Alex Y. W. Lin, Haluk Beyenal, Markus A. Wimmer

{"title":"Interactions between hyaluronic acid and CoCrMo alloy surface in simulated synovial fluids","authors":"Simona Radice, Gretchen Tibbits, Alex Y. W. Lin, Haluk Beyenal, Markus A. Wimmer","doi":"10.1049/bsb2.12027","DOIUrl":"10.1049/bsb2.12027","url":null,"abstract":"The performance of CoCrMo alloy in orthopaedic implants may be unfavourably affected by hyaluronic acid (HA) in synovial fluid. In this study, the authors aimed to understand the interactions between HA and CoCrMo using dedicated electrochemical experiments and surface analyses. A sequence of electrochemical measurements (open-circuit potential, linear polarization resistance, potentiodynamic and potentiostatic polarizations) was run on LC-CoCrMo (ASTM F1537) in Dulbecco's phosphate-buffered saline (DPBS) solution with and without HA and in DPBS mixed with newborn calf serum (NCS) and HA, partially under simultaneous recording of surface pH using custom-made microelectrodes. Samples were analysed by optical and electron microscopy. HA had no significant impact on the corrosion potential of CoCrMo alloy (ECORR = −173 ± 8, −211 ± 16, and −254 ± 30 mVAg/AgCl, in DPBS, DPBS + HA, and DPBS + NCS + HA, respectively). Average current density values at the transpassive domain were double in DPBS compared to DPBS + HA and DPBS + NCS + HA. At potentials above +0.6 VAg/AgCl, surface pH values decreased from 7.5 to 6.5 in DPBS and from 7.5 to below 4 in DPBS + HA. In conclusion, the presence of HA did not compromise the corrosion resistance of CoCrMo alloy at free potential, but it enhanced acidic conditions at the near surface under anodic-applied potential in the transpassive domain.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"239-250"},"PeriodicalIF":0.0,"publicationDate":"2021-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49306217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

From rock-boring organisms to tunnel boring machines: A new rock breaking technology by bioinspiration 从钻岩生物到隧道掘进机:生物灵感破岩新技术

Biosurface and Biotribology Pub Date : 2021-09-17 DOI: 10.1049/bsb2.12025

Jing Zheng, Zhixin Wu, Jiahui Nie, Lei Lei, Zhongrong Zhou, Jianbin Li

{"title":"From rock-boring organisms to tunnel boring machines: A new rock breaking technology by bioinspiration","authors":"Jing Zheng, Zhixin Wu, Jiahui Nie, Lei Lei, Zhongrong Zhou, Jianbin Li","doi":"10.1049/bsb2.12025","DOIUrl":"10.1049/bsb2.12025","url":null,"abstract":"The purpose of this study is to achieve better understanding of associated mechanisms and to recommend and identify new strategies to develop new rock breaking technology for Tunnel Boring Machines (TBMs). Tunnel Boring Machine tunnelling mainly depends upon the rock breakage caused by cutters moving on a rock surface in a rolling and sliding motion while under the action of thrust force. The rock breaking behaviour is controlled by the mechanical interaction between the cutters and the rock. Due to the high hardness and high abrasiveness of rock, the cutters have to work under very high thrust force and suffer heavy-load-impact and abrasive wear, causing serious wear and low rock breaking efficiency. Rock-boring organisms exist in nature, which achieve drilling and/or tunnelling in rocks through a tribochemical interaction. This phenomenon is called bioerosion and the organisms are natural ‘TBMs’ to some degree. In this study, the interaction between TBM cutters and rock is presented, and current measures to improve cutter wear and rock breaking efficiency and their limitations are reported. Then, the connotation, mechanism and typical cases of bioerosion are presented. Finally, inspired by bioerosion, a new chemically assisted rock breaking technology is proposed for TBMs.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"233-238"},"PeriodicalIF":0.0,"publicationDate":"2021-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57691702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The co-effect of microstructures and mucus on the adhesion of abalone from a mechanical perspective 从力学角度看微观结构与黏液对鲍鱼黏附的共同影响

Biosurface and Biotribology Pub Date : 2021-08-23 DOI: 10.1049/bsb2.12024

Jing Li, Chuandong Ma, Jun Liu, Xiangwei Dong, Jianlin Liu

引用次数: 5