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2024 IEEE International Conference on Industrial engineering and engineering Management, IEEM 2024

作者： Alfina, Kartika Nur Chandima Ratnayake, R.M. Bandung Indonesia Department of Mechanical and Structural Engineering and Materials Science University of Stavanger Stavanger Norway

ISBN: (纸本)9798350386097

Healthcare-associated infections (HAIs) pose a significant challenge to the quality of care, leading to patient complications, extended hospital stays, and high consumable costs. Cloud-based technologies have become essential for overcoming barriers to circularity in healthcare, offering transformative opportunities for healthcare systems. Measuring the impact of linear consumption is crucial for circularity, however the healthcare industry lacks focus on measuring the impact of HAIs, particularly related to hand hygiene. Integrating cloud-based hand sanitizer and group technology offers potential to prevent the spread of HAIs and minimize linear consumption, aligning with Circular Economy Goals (CEGs). This study examines the potential of integrating cloud-based HST with group technology (GT) to minimize the impact of HAIs caused by poor hand hygiene. Using the Opitz Code classification system, a coding system is created to measure the impact of poor hand hygiene, serving as a control and improvement tool aligned with CEGs. This article presents an illustrative case to demonstrate the HST coding classification to facilitate predictive analysis for HAIs prevention and control. These findings contribute to reducing HAIs by improving hand hygiene performance in healthcare facilities. Furthermore, by aligning technological advances with CEGs, this study offers a proactive strategy to mitigate environmental degradation by reducing carbon dioxide (CO2) emissions and strengthening the resilience of healthcare systems. © 2024 IEEE.

关键词： Circular economy

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High-speed grinding:from mechanism to machine tool

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Advances in Manufacturing 2025年第1期13卷 105-154页

作者： Yu-Long Wang Yan-Bin Zhang Xin Cui Xiao-Liang Liang Run-Ze Li Ruo-Xin Wang Shubham Sharma Ming-Zheng Liu Teng Gao Zong-Ming Zhou Xiao-Ming Wang Yusuf Suleiman Dambatta Chang-He Li School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao266520ShandongPeople’s Republic of China Key Laboratory of High Efficiency and Clean Mechanical Manufacture of MOE School of Mechanical EngineeringShandong UniversityJinan250061People’s Republic of China Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMAUSA State Key Laboratory of Ultra-precision Machining Technology Department of Industrial and Systems EngineeringThe Hong Kong Polytechnic UniversityHong KongPeople’s Republic of China Department of Mechanical Engineering and Advanced Materials Science Council of Scientific and Industrial Research(CSIR)-Central Leather Research Institute(CLRI)Regional Center for Extension and DevelopmentJalandhar144021India Hanergy(Qingdao)Lubrication Technology Co. Ltd.Qingdao266200ShandongPeople’s Republic of China Department of Mechanical Engineering Ahmadu Bello UniversityZariaNigeria

High-speed grinding(HSG)is an advanced technology for precision machining of difficult-to-cut materials in aerospace and other fields,which could solve surface burns,defects and improve surface integrity by increasing the linear speed of the grinding *** advantages of HSG have been preliminarily confirmed and the equipment has been built for experimental research,which can achieve a high grinding speed of more than 300 m/***,it is not yet widely used in manufacturing due to the insufficient understanding on material removal mechanism and characteristics of HSG machine *** fill this gap,this paper provides a comprehensive overview of HSG technologies.A new direction for adding auxiliary process in HSG is ***,the combined influence law of strain hardening,strain rate intensification,and thermal softening effects on material removal mechanism was revealed,and models of material removal strain rate,grinding force and grinding temperature were ***,the constitutive models under high strain rate boundaries were summarized by considering various properties of material and grinding ***,the change law of material removal mechanism of HSG was revealed when the thermodynamic boundary conditions changed,by introducing lubrication conditions such as minimum quantity lubrication(MQL),nano-lubricant minimum quantity lubrication(NMQL)and cryogenic air(CA).Finally,the mechanical and dynamic characteristics of the key components of HSG machine tool were summarized,including main body,grinding wheel,spindle and dynamic balance *** on the content summarized in this paper,the prospect of HSG is put *** study establishes a solid foundation for future developments in the field and points to promising directions for further exploration.

关键词： High speed grinding(HSG) Material removal mechanism Typical material Lubrication methods Machine tool

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Gradient CNT/PVDF piezoelectric composite with enhanced force-electric coupling for soccer training

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Nano Research 2023年第8期16卷 11312-11319页

作者： Wanghong Zeng Weili Deng Tao Yang Shenglong Wang Yue Sun Jieling Zhang Xiarong Ren Long Jin Lihua Tang Weiqing Yang Key Laboratory of Advanced Technologies of Materials(Ministry of Education) School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Department of Mechanical and Mechatronics Engineering University of AucklandAuckland 1010New Zealand Research Institute of Frontier Science Southwest Jiaotong UniversityChengdu 610031China

Real-time monitoring of ball–shoe interactions can provide essential information for high-quality instruction in personalized soccer training,yet existing monitoring systems struggle to reflect specific forces,loci,and durations of ***,we design a self-powered piezoelectric sensor constructed by the gradient carbon nanotube/polyvinylidene fluoride(CNT/PVDF)composite to monitor the interactions between the ball and the ***-dimensional Raman mapping demonstrates the gradient structure of CNT/PVDF prepared by programmable electrospinning combined with a hot *** from the synergistic effect of local polarization caused by the enrichment of CNT and the reduced diffusion of silver patterns in gradient structure,the as-prepared composite exhibits enhanced force-electric coupling with an excellent sensitivity of 80 mV/N and durability over 15,000 *** this basis,we conformally attach a 3×3 sensor array to a soccer shoe,enabling real-time acquisition of kick position and contact force,which could provide quantitative assessment and personalize guidance for the training of soccer *** self-powered piezoelectric sensor network system offers a promising paradigm for wearable monitoring under strong impact forces.

关键词： mechanical and electrical performance pressure sensor carbon nanotube/polyvinylidene fluoride(CNT/PVDF)composite soccer training

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On the Free Vibration of 3D-Printed Structural Elements 14

On the Free Vibration of 3D-Printed Structural Elements

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14th International Conference on Recent Advances in Structural Dynamics, RASD 2024

作者： Virgin, Lawrie Department of Mechanical Engineering and Materials Science Duke University DurhamNC27708 United States

This paper focuses on using 3D-printing to produce relatively simple, flexible structural components such as cantilevers, rings and plane frames. The relatively high resolution of modern 3D-printers facilitates the production of small-scale but slender structures, and thus provides an opportunity to exploit geometric parameter variations to enhance a practical understanding of stiffness and vibration. This approach has proved successful in both the classroom via demonstration models, as well as in the research lab in which elementary facilities can be utilized to acquire data. An especially useful facet of this approach is the assessment and justification for modeling simplifications, e.g., estimating flexural modulus, or judging the circumstances under which the familiar sway assumption is valid in portal frames. Non-simple structural geometries, for example circular rings, can also be conveniently produced and tested for natural frequencies and vibration mode shapes. We then extend this approach to forced vibration, with examples including the vibrating reed tachometer and sympathetic resonance. The advantage of this approach obviates the need for any external sources of excitation. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Research laboratories

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GRIPPY: A VR Grip Controller for Combating Sarcopenia in Elderly

GRIPPY: A VR Grip Controller for Combating Sarcopenia in Eld...

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2025 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops, VRW 2025

作者： Leong, Hoilam Wu, Jiang Lai, Yoke Chin Faulon, Loïc Sun, Xu Lee, Boon Giin University of Nottingham Faculty of Science and Engineering Department of Mechanical Materials and Manufacturing Engineering Ningbo China School of Computer Science China

ISBN: (纸本)9798331514846

As the global population ages, sarcopenia - age-related muscle decline - demands innovative solutions. This paper introduces GRIPPY, a VR grip controller that transforms basic handgrip exercises into immersive, gamified tasks. By integrating sensor-based interaction and VR gameplay, older adults can strengthen grip while maintaining higher motivation. A preliminary test with three participants (ages 68-80) revealed key usability insights, underscoring GRIPPY's potential for enhanced rehabilitation. Future work will refine its design and validate long-term efficacy. © 2025 IEEE.

关键词： Elderly Rehabilitation Grip Strength Immersive Exercise Interactive Training Sarcopenia Virtual Reality

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Material properties analysis of high-temperature stable (Nb, Mn)-doped BaTiO3–Bi0.5Na0.5TiO3-based dielectric X8R ceramics

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Ceramics International 2025年第16期51卷 22967-22977页

作者： Wu, Yu-Chuan Lu, Ming-Zhe Huang, Chun-Ming Chen, Po-Yen Yeh, Yu-Chen Feng, Kuei-Chih Institute of Materials Science and Engineering National Taipei University of Technology Taipei10608 Taiwan Department of Materials and Mineral Resources Engineering National Taipei University of Technology Taipei10608 Taiwan Prosperity Dielectrics Co. Ltd Taoyuan33860 Taiwan Department of Mechanical Engineering Ming Chi University of Technology New Taipei City24301 Taiwan

The solid-state reaction method was utilized to synthesize (0.9BaTiO3–0.1Bi0.5Na0.5TiO3)–x mol% Nb2O5–y mol% Mn2O3 (x = 1.9, 2, 2.1;y = 0, 0.09, 0.1, 0.11) ceramics, and their microstructures, bonding and dielectric properties were investigated. All samples sintered at 1200 °C for 2 h have perovskite BaTiO3, Ba6Ti17O40−x and Ba6Ti14Nb2O39 phases with a dense structure. The grains of the BaTiO3 phase have the characteristics of core-shell structure. The capacitance change rate (ΔC/C25°C) of the samples (x = 1.9–2.1 and y = 0;x = 2 and y = 0.09, 0.1) are within ±15% over the range −55 °C to 150 °C and meets the Electronic Industries Association (EIA) X8R specification. The average grain size of the ceramic with x = 2 and y = 0.1 is 556 ± 74 nm, and its dielectric properties are Εr = 1640 (−55 °C), 1609 (25 °C) and 1552 (150 °C);tanδ = 3.36% (−55 °C), 0.7% (TC) and 0.14% (150 °C);ΔC/C25°C = 1.95% (−55 °C), 11.81% (TC) and −3.51% (150 °C). Adding a small amount of Mn element to the Nb-doped sample will produce [NbTi·-MnTi′]×, which helps to increase Εr and reduce tanδ at 120 °C–220 °C. In addition, the Ba6Ti17O40–x and Ba6Ti14Nb2O39 phases will also slightly reduce the Εr of BT-based ceramics. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Perovskite

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Fretting Corrosion Wear of Titanium-Based Alloy (Ti-6Al-4V) in 0.9 wt.% NaCl Solution

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Journal of Marine science and Technology (Taiwan) 2024年第1期32卷 16-25页

作者： Lu, Chen-En Li, Wen-Ken Sheu, Hung-Hua Lee, Jeou-Long Lee, Hung-Bin Energy College Quanzhou Vocational and Technical University China Department of Mechanical Engineering Chung Yuan University Taoyuan City200 Taiwan Department of Mechanical Engineering Lunghwa University of Science and Technology Taoyuan333 Taiwan Department of Semiconductor Engineering Lunghwa University of Science and Technology Taoyuan333 Taiwan Department of Optoelectronics and Materials Technology National Taiwan Ocean University Keelung202 Taiwan

In this study, a high-precision fretting tribo-corrosion tester used to analyze the wear and corrosion behavior of Ti alloys in a fretting motion condition. The tester, operated in a ball-on-plate mode, was employed in the fretting corrosion study of metallic bio-materials (Ti and Ti-6Al-4V) under different loads (0 and 10 N), electrolytes (0.9 wt% NaCl and SBF) and fixed displacement frequency (1 Hz). Using profilometer, optical microscope in the experimental analysis and three-body mechanism in the theoretical analysis, the fretting corrosion performances of these biomedical metals, such as velocity accommodation characteristics, friction, wear, and scratch profile were examined in depth. The dynamic polarization curves indicated that under the same electrolyte and displacement amplitude the mass loss was more severe in fretting corrosion than in simple corrosion. Under different applied potentials ¡0.5 mVSCE, +0 mVSCE and +1.5 mVSCE, it was found that the friction coefficient and cross-sectional area of worn trace increased with the corrosion potential. Both the mechanisms of adhesive wear and fatigue wear contributed mainly to the wear loss of pure Ti while fatigue wear and abrasive wear were more responsible for the wear loss of Ti-6Al-4V alloy. © 2024 National Taiwan Ocean University.

关键词： Fretting corrosion

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Design of protective and high sensitivity encapsulation layers in wearable devices

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science China(Technological sciences) 2023年第1期66卷 223-232页

作者： WANG XiuFeng HUANG JieLong LIU YangChengYi TAN JinYuan CHEN ShangDa AVILA Raudel XIE ZhaoQian School of Materials Science and Engineering Xiangtan UniversityXiangian 41105China Department of Mechanical Engineering Northwestern UniversityEvanstonIL 60208USA State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsDalian University of TechnologyDalian116024China

Elastomeric encapsulation layers are widely used in soft, wearable devices to physically isolate rigid electronic components from external environmental stimuli(e.g., stress) and facilitate device sterilization for reusability. In devices experiencing large deformations, the stress-isolation effect of the top encapsulation layer can eliminate the damage to the electronic components caused by external forces. However, for health monitoring and sensing applications, the strain-isolation effect of the bottom encapsulation layer can partially block the physiological signals of interest and degrade the measurement accuracy. Here, an analytic model is developed for the strain-and stress-isolation effects present in wearable devices with elastomeric encapsulation layers. The soft, elastomeric encapsulation layers and main electronic components layer are modeled as transversely isotropicelastic mediums and the strain-and stress-isolation effects are described using isolation indexes. The analysis and results show that the isolation effects strongly depend on the thickness, density, and elastic modulus of both the elastomeric encapsulation layers and the main electronic component layer. These findings, combined with the flexible mechanics design strategies of wearable devices, provide new design guidelines for future wearable devices to protect them from external forces while capturing the relevant physiological signals underneath the skin.

关键词： strain-isolation effect stress-isolation effect elastomeric encapsulation transversely isotropic medium wearable devices

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Solvothermal growth of Zn_(2)SnO_(4) for efficient dye-sensitized solar cells

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Rare Metals 2022年第3期41卷 942-950页

作者： Yu-Fen Wang Hui Feng Yi-Rui Deng Fei-Fei Xin De-Jun Li Zhuo-Fan Hu Lei Zhang Rui-Ping Liu Energy and Materials Engineering Centre College of Physics and Materials ScienceTianjin Normal UniversityTianjin 300387China Department of Materials Science and Engineering China University of Mining and Technology(Beijing)Beijing 100083China Department of Mechanical Engineering University of AlaskaFairbanksAlaska 99775-5905USA

Zn_(2)SnO_(4)plates,particles and spheres are suc-cessfully prepared via a facile synthesis way by carefully adjusting the solvothermal conditions,which are further applied as photoanodes in dye-sensitized solar cells(DSSCs)to explore the relationships between the pho-toanode nanostructure and the photovoltaic *** a result,the DSSCs based on Zn_(2)SnO_(4)spheres pho-toanode showcased the best power conversion efficiency(PCE,4.85%),compared to Zn_(2)SnO_(4)plates(3.80%)and particles(4.13%).It is found that Zn_(2)SnO_(4)spheres exhibit the highest light-scattering abilities,as evidenced by ultraviolet–visible(UV–Vis)diffuse reflectance ***,investigations on dynamic electron transport and recombination properties via intensity-modulated photovoltage/photocurrent spectroscopy(IMVS/IMPS),and electrochemical impedance spectroscopy(EIS)mea-surements demonstrate that the Zn_(2)SnO_(4)spheres-based DSSCs possess the fastest electron transport rate,the longest electron lifetime,the highest electron collection efficiency(ηc c),and the largest charge recombination resistance,compared with the Zn_(2)SnO_(4)plates and particles,all of which are highly beneficial for the powder conversion efficiency enhancements.

关键词： Dye-sensitized solar cell Zn_(2)SnO_(4) Plates Particles Spheres

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In-situ observation of microcrack initiation and damage nucleation modes on the HAZ of laser-welded DP1180 joint

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Journal of materials science & Technology 2023年第17期148卷 138-149页

作者： Junliang Xue Wei Guo Jin Yang Mingsheng Xia Guang Zhao Caiwang Tan Zhandong Wan Jiaxuan Chi Hongqiang Zhang School of Mechanical Engineering and Automation Beihang UniversityBeijing100191China School of Materials Engineering Shanghai University of Engineering ScienceShanghai201620China R&D Center TANGSTEEL CompanyHBIS GroupTangshan063016China Shandong Provincial Key Laboratory of Special Welding Technology Harbin Institute of Technology at WeihaiWeihai264209China Department of Mechanical Engineering Tsinghua UniversityBeijing100084China School of Materials Science and Engineering Beihang UniversityBeijing100191China

In-situ SEM can intuitively observe the changes in microstructure and microcrack initiation during the deformation process of the *** this paper,the microstructural evolution,mechanical properties,and damage nucleation modes of DP1180 laser welded joints were systematically discussed by the trans-mission electron microscope(TEM),focused ion beam(FIB),and in-situ tensile *** precipitation of carbides and disappearance of dislocations tangles deteriorated the mechanical properties of tempered martensite in the sub-critical heat affected zone(SCHAZ),which caused its microhardness slightly de-creased(∼27 HV)and also called the softened *** joints fractured in the SCHAZ during the tensile and Erichsen cupping tests and microcracks initiated from the tempered martensite,while the microc-rack initiation of base material(BM)occurred at the ferrite/martensite *** dominant damage nucleation mode of the joint was tempered martensite cracking,and that of BM was ferrite/martensite interface decohesion during tests.

关键词： In-situ tensile test DP steel Laser welded Damage nucleation modes

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