Wear simulations of UHMWPE can economically and conveniently predict the performance of wear resistant bushings used for sealing or other reciprocating unidirectional sliding motion. In this study, pin on plate tribological experiments and microscopic analysis was done to obtained the wear profiles, wear volume and wear mechanism of UHMWPE against the counterface with different surface roughness of which Ra range is 0.03 ~ 2 μm. Meanwhile, the 3D wear simulation model of the pin on plate tribological experiments was established to discuss the adaptability of the energy and Archard wear model by analyzing the difference of wear profiles and wear volume between the experiment and simulation. The results indicate that with an increase in the counterface roughness, the wear simulation of UHMWPE estimated by the energy model were more accurate in reciprocating unidirectional sliding motion.
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http://dx.doi.org/10.1038/s41598-024-66613-w | DOI Listing |
J Colloid Interface Sci
January 2025
School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013 China.
Superhydrophobic surfaces have been demonstrated to exhibit excellent anti-icing effects, but they are susceptible to the loss of ice repellency as a result of external impacts. This paper proposes a novel bionic armour structure that combines an armour structure with an arrowroot bionic structure. A composite method combining laser etching and chemical modification was employed to achieve superhydrophobicity on the surface of the aluminium alloy.
View Article and Find Full Text PDFJ Hazard Mater
January 2025
School of Textile Science and Engineering, Jiangnan University, Wuxi 214021, China. Electronic address:
Perfluoroalkyl and poly-fluoroalkyl substances (PFAS) release from textiles is a source of human exposure, but the mechanisms behind this release remain insufficiently studied. This research investigates the release and transport mechanisms of PFAS in outdoor jacket fabrics treated with a short side-chain fluorinated polymers (CF-SFPs) for durable water repellency (DWR). PA-based and PET-based fabrics were exposed to outdoor conditions and subjected to accelerated aging, followed by abrasion, washing, and drying experiments to simulate wear and degradation.
View Article and Find Full Text PDFJ Biomech
January 2025
Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region.
This study explored how systematic changes in running shoe degradation and foot inversion alter the distribution and peak value of heel pressure and calcaneus stress, as well as the total stress-concentration exposure (TSCE) within the calcaneal bone. A foot-shoe finite element model was employed and three shoe wear conditions (new shoe (CON), moderate worn shoe (MWSC), excessive worn shoe (EWSC)) coupled with three foot inversion angles (0°, 10°, 20°) were further modulated. Simulations were conducted at the impact peak instant during running.
View Article and Find Full Text PDFSci Rep
January 2025
FLUIDIAN, 95450, Commeny, France.
Even though the COVID-19 pandemic now belongs to the long history of infectious diseases that have struck humanity, pathogenic biological agents continue to pose a recurring threat in private places, but also and mainly in places where the public congregates. In our recent research published in this journal in 2022 and 2023, we considered the illustrative example of a commuter train coach in which a symptomatic or asymptomatic passenger, assumed to be infected with a respiratory disease, sits among other travellers. The passenger emits liquid particles containing, for example, COVID-19 virions or any other pathogen.
View Article and Find Full Text PDFMillions of women worldwide have breast cancer, a common and possibly fatal illness according to WHO Reports. A genetic mutation usually causes breast adenocarcinomas. Only 5-10% of cancers are induced by genetic mutations that develop with age, and the "wear and tear" of general life causes 85-90% of breast cancers.
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