Lubrication failure accompanying with blackening phenomenon significantly reduces the long-running operational reliability of porous polymide (PPI) lubricated with poly-α-olefin (PAO) oil. Here, the effects of lubrication condition and …
verfasst von:
Pengfei Shi, Yang Yin, Shaohua Zhang, Diankai Zhang, Yuanyuan Jiang, Yang Wang, Ningning Zhou, Tao Qing, Jintao Wu, Linmao Qian, Jiyang Zhang, Lei Chen
To reduce the usage of classical lubricants in deep drawing, a new tribological system based on volatile lubricants was developed. Therefore, a volatile medium is injected under high pressure into the interstice between drawing tool and sheet …
verfasst von:
Paul Reichle, Jakob Barz, Georg Umlauf, Günter E. M. Tovar
The outstanding tribological performance of transition metal dichalcogenides (TMDs) is attributed to their unique sandwich microstructure and low interlayer shear stress. This advantageous structure allows TMDs to demonstrate exceptional friction …
verfasst von:
Yuzhen Liu, Jae-Ho Han, Shusheng Xu, Young Chan Jung, Dae-Eun Kim
Humans rely on their fingers to sense and interact with external environment. Understanding the tribological behavior between finger skin and object surface is crucial for various fields, including tactile perception, product appearance design …
Wearable biomechanical energy harvesting devices have received a lot of attention recently, benefiting from the rapid advancement of theories and devices in the field of the micro electromechanical system (MEMS). They not only fulfil the …
Cartilage is well lubricated over a lifetime and this phenomenon is attributed to both of the surface hydration lubrication and the matrix load-bearing capacity. Lubricious hydrogels with a layered structure are designed to mimic cartilage as …
The main cable bent around the saddle of the suspension bridge is subjected to the wind, the vehicle, the bridge’s own weight and the corrosive media. The coupling of the three loads and the environments causes the friction, the corrosion, and the …
verfasst von:
Bo Wang, Dagang Wang, Jihong Ye, Liang Tang, Hailang Chong, Wei Xu, Xinxin Zhang, Jianhao Chen, Haiyan Deng, Jie Zhang, Guowen Yao, Magd Abdel Wahab
A stochastic uncertain tribodynamic model is established for a spur gear pair for the first time. The stochastic uncertainty of pinion rotation speed propagated to lubrication performance is investigated. The probability density function of the …
This study is an optimized extension based on the authors’ previous research on the tribo-chemical reaction under constant temperature field of two-stroke internal combustion engines (ICEs). It establishes a coupled analysis model that considers …
verfasst von:
Xiuyi Lyu, Jiang Hu, Yunchuan Wang, Jinlu Sheng, Xuan Ma, Tongyang Li, Chang Ge, Xiqun Lu
Friction and wear are unavoidable in mechanical movement. The use of lubricants with nano-additives can effectively reduce friction and wear, which is of great significance to saving energy and protecting the environment. At present, great …
Consumption of plant-based food products having high composition of polyphenols leads to the sensation of astringency. For sliding oral surfaces, friction is an essential property during the oral perception of roughness and dryness which are …
verfasst von:
Samuel S. Gamaniel, Paloma S. Dueñas Robles, Hans Tromp, Els H. A. de Hoog, Sissi de Beer, Emile van der Heide
Most studies of liquid lubricants were carried out at temperatures below 200 °C. However, the service temperature of lubricants for aerospace and aeroengine has reached above 300 °C. In order to investigate the friction mechanism and provide data …
verfasst von:
Yan Meng, Xiangli Wen, Jie Cheng, Pengpeng Bai, Yonggang Meng, Yu Tian
Pulsed magnetic treatment (PMT) has been adopted as an effective strengthening method for engineering materials and components in recent years, and the development of its application depends on the comprehensive understanding of the nature of PMT.
verfasst von:
Zhipeng Cai, Chengkai Qian, Xu Zhang, Ning Dai, Yao Wu, Wen Ji
Elbow wear is a major threat to the multiphase pipeline transportation industry, which has a negative impact on the stable operation of the transportation system. In order to find the wear reduction methods of elbows in the fluidization pipeline …
In this work, the advantage of Coulomb repulsion in the intermolecular forces experienced by molecules on the solid-liquid nanosized contact interface is taken, and the superior friction-reducing property of Cu3(PO4)2·3H2O (CuP) oil-based …
verfasst von:
Linlin Duan, Dan Jia, Jian Li, Jianfang Liu, Haitao Duan
Accurately measuring the coefficient of friction (COF) is the fundamental prerequisite of superlubricity research. This study aimed to reduce the COF measurement resolution Δμ of atomic force microscopy (AFM). Based on the theoretical model, a …
Copper, permalloy, cobalt, and silicon are the materials that have been widely utilised in magnetic devices. When the size of interest is down to the nanoscale, the inter-diffusion between certain materials becomes influential. This paper studies …
The ocular lubrication, where the eyelid constantly slides on the curved corneal surface, is considered as one of primary lubrication systems in bio-tribology. Under reliable lubrication conditions, sensitive ocular tissues remain intact from …
Fluid jet polishing (FJP) is a non-contact polishing technology that can fabricate free-form optical surfaces with sub-micron-level form accuracy and nano-level surface roughness, especially for hard and brittle materials. The surface generation …