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Mechanical and Rheological Properties of Bamboo Pulp Fiber Reinforced High Density Polyethylene Composites:Influence of Nano CaCO_(3)Treatment and manufacturing process with Different Pressure Ratings

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Journal of Renewable Materials 2022年第7期10卷 1829-1844页

作者： Cuicui Wang Xin Wei Lee MSmith Ge Wang Shuangbao Zhang Haitao Cheng International Centre for Bamboo and Rattan Beijing100102China Department of Mechanical and Energy Engineering University of North TexasDenton76203USA Beijing Key Laboratory of Wood Science&Engineering College of Material Science&TechnologyBeijing Forestry UniversityBeijing100083China

In order to investigate the effect of the relative motion of nano CaCO_(3)reinforced bamboo pulp fiber(BPF)/HDPE composite components on the mechanical performance,a comparative study was *** was treated by nano CaCO_(3)blending(BM)and impregnation modification(IM)*** composites were produced using hot press(HPMP),extrusion(EMP)and injection molding process(IMP).The physical morphology of BPF was similar at different manufacturing *** to the samples manufactured by HPMP,a decrease in the(specific)flexural strength of BPF/HDPE composites and an increase in those of composites treated by nano CaCO_(3)manufactured by EMP and IMP were *** injection molded composites exhibited the best values in the(specific)impact strength,(specific)tensile *** had a greater effect on the rheological behavior of the composites than BM,and nano CaCO_(3)treatment most effectively affected the performance of the extrusion molded composites.

关键词： Nano CaCO_(3) bamboo pulp fiber composites manufacturing process mechanical properties rheological properties

Influence of manufacturing process of Warp-knitted Vascular Prosthesis on the Wall Homogeneity

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Journal of Donghua University(English Edition) 2003年第2期20卷 9-13页

作者：王璐丁辛 College of Textiles Donghua UniversityShanghai 200051 College of Textiles Donghua UniversityShanghai 200051his paper reports the evolution of textile structure and mechanical properties of vascular prosthesis in the level of the whole prosthesis and the constituent filaments with respect to the manufacturing process. The tubular wall of the prosthesis is divided circumferentially into three zones basic line (BL) remeshing line ( RL) and guide line ( GL). Some heterogeneity has been observed on the tubular wall in terms of stitch structure of the prosthesis and linear density of the constituent filaments. The breaking position of the prosthesis under circumferential tensile localizes preferentially in remeshing line that is the weakest zone by warp knitting with double needle bed. Furthermore the statistical differences of the mechanical properties of the filaments of zone RL GL and BL have been confirmed too. It is predictable that the deterioration of prosthesis under physiological loads (periodical pulse blood pressure etc.) could happen firstly in the weaker zone in vivo.

This paper reports the evolution of textile structure and mechanical properties of vascular prosthesis in the level of the whole prosthesis and the constituent filaments with respect to the manufacturing process. The tubular wall of the prosthesis is divided circumferentially into three zones; basic line (BL), remeshing line ( RL) and guide line ( GL). Some heterogeneity has been observed on the tubular wall in terms of stitch structure of the prosthesis and linear density of the constituent filaments. The breaking position of the prosthesis under circumferential tensile localizes preferentially in remeshing line that is the weakest zone by warp knitting with double needle bed. Furthermore, the statistical differences of the mechanical properties of the filaments of zone RL, GL and BL have been confirmed too. It is predictable that the deterioration of prosthesis, under physiological loads (periodical pulse blood pressure etc.), could happen firstly in the weaker zone in vivo.

关键词： Vascular prosthesis Warp-knitted structure Circumferential tensile properties manufacturing process

Research on Crucial manufacturing process of Rigid-Flex PCB

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Journal of Electronic Science and Technology of China 2006年第1期4卷 24-28页

作者：汪洋何为何波龙海荣刘美才吴苏 School of Microelectronics and Information Engineering University of Electronic Science and Technology of China Chengdu 610054 China Zhuhai Topsun Electric Technology Co. LTD. Zhuhai 519060 Guangdong China College of chemistry and Environment Protection Engineering Southwest University for Nationalities Chengdu 610041 China

The main characteristics, applications, the emphases of manufacturing process are introduced, and the research of new product of rigid-flex Printed Circuit Board （PCB） is also described. In particular, the plasma desmear process, which is the crucial problems of manufacturing process, is discussed in detail. Samsung 4-layer rigid-flex PCB has been developed successfully, and the qualification rate reaches to 89.4%.

关键词： Printed Circuit Borad (PCB) rigid-flex PCB manufacturing process plasma desmear process

WEB-BASED manufacturing process DEVELOPER

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Transactions of Nanjing University of Aeronautics and Astronautics 2000年第2期17卷 213-217页

作者：陈文亮李卫国曾建江丁秋林南京航空航天大学机电工程学院南京210016

Product and manufacturing process developments are knowledge intensive. For rapid product developments in today′s competitive global marketplace, we need tools to facilitate the effective utilization of critical design and manufacturing knowledge obtained during the previous product developments. The Internet technology has very rapidly evolved over past few years. The web is being increasingly used to support various activities of the pro duct development process. Java is a programming language that is highly tuned for the web environment. This paper is concerned with providing the solution of web based manufacturing process development. The architecture of web based application and the implementation of web based manufacturing process developer are discussed.

关键词： product design manufacturing process knowledge internet

Micro-scale Realization of Compliant Mechanisms:manufacturing processes and Constituent Materials-A Review

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Chinese Journal of Mechanical Engineering 2021年第4期34卷 20-41页

作者： Minchang Wang Daohan Ge Liqiang Zhang Just L.Herder Institute of Intelligent Flexible Mechatronics Jiangsu UniversityZhenjiang 212013China Department of Precision and Microsystems Engineering Faculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyMekelweg 22628CD DelftThe Netherlands

Compliant micromechanisms(CMMs)acquire mobility from the deflection of elastic members and have been proven to be robust by millions of silicon MEMS ***,the limited deflection of silicon impedes the realization of more sophisticated CMMs,which often require larger ***,some novel manufacturing processes have emerged but are not well known by the *** this paper,the realization of CMMs is reviewed,aiming to provide help to mechanical designers to quickly find the proper realization method for their CMM *** this end,the literature surveyed was classified and statistically analyzed,and representative processes were summarized individually to reflect the state of the art of CMM ***,the features of each process were collected into tables to facilitate the reference of readers,and the guidelines for process selection were *** review results indicate that,even though the silicon process remains dominant,great progress has been made in the development of polymer-related and composite-related processes,such as micromolding,SU-8 process,laser ablation,3D printing,and the CNT *** processes result in constituent materials with a lower Young’s modulus and larger maximum allowable strain than silicon,and therefore allow larger *** geometrical capabilities(e.g.,aspect ratio)of the realization methods should also be considered,because different types of CMMs have different *** conclude that the SU-8 process,3D printing,and carbon nanotube frameworking will play more important roles in the future owing to their excellent comprehensive capabilities.

关键词： Compliant micromechanism manufacturing process Constituent material

Advances of physics-based precision modeling and simulation for manufacturing processes

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Advances in manufacturing 2013年第1期1卷 75-81页

作者： Gang Wang Yi-Ming Rong Department of Precision Instruments and Mechanology Tsinghua University Department of Mechanical Engineering Worcester Polytechnic Institute

The development of manufacturing process concerns precision, comprehensiveness, agileness, high efficiency and low cost. The numerical simulation has become an important method for process design and optimization. Physics-based modeling was proposed to promote simulations with a high accuracy. In this paper, three cases, on material properties, precise boundary conditions, and micro-scale physical models, have been discussed to demonstrate how physics-based modeling can improve manufacturing simulation. By using this method, manu- facturing process can be modeled precisely and optimized for getting better performance.

关键词： Material properties Multiscale analysis Physics-based modeling manufacturing process

PEDOT:PSS:From conductive polymers to sensors

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Nanotechnology and Precision Engineering 2021年第4期4卷 89-107页

作者： Xiaoshuang Zhang Wentuo Yang Hainan Zhang Mengying Xie Xuexin Duan State Key Laboratory of Precision Measuring Technology and Instruments Tianjin UniversityTianjin 300072China

PEDOT:PSS conductive polymers have received tremendous attention over the last two decades owing to their high conductivity,ease of processing,and *** a flexible versatile material,PEDOT:PSS can be developed into various forms and has had a significant impact on emerging sensing *** review covers the development of PEDOT:PSS from material to physical *** focus on the morphology of PEDOT:PSS in the forms of aqueous dispersions,solid films,and *** processes are summarized,including coating,printing,and lithography,and there is particular emphasis on nanoimprinting lithography that enables the production of PEDOT:PSS nanowires with superior sensing *** to various physical sensors,for humidity,temperature,pressure,and strain,are ***,we discuss the challenges and propose new directions for the development of PEDOT:PSS.

关键词： PEDOT:PSS Conductive polymer Sensor Physical sensor manufacturing process Morphology

Starting materials, processes and characteristics of bio-based foams: A review

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Journal of Bioresources and Bioproducts 2024年第2期9卷 160-173页

作者： Xiaohan Wang Jinwon Jang Yanqun Su Jingang Liu Hongjie Zhang Zhibin He Yonghao Ni National Engineering Laboratory for Pulp and Paper China National Pulp and Paper Research Institute Co.Ltd.Beijing 100102China Limerick Pulp and Paper Centre and Department of Chemical Engineering University of New BrunswickNew Brunswick E3B 5A3Canada

Biofoam products have attracted considerable attention lately because there is a growing demand for green/sustainable *** this end,various biobased foams have either been developed or are currently in development,e.g.,bio-based polyurethanes(PUs),polylactic acid(PLA),starch,and polyhydroxyalkanotates(PHAs).Indeed,significant progress has been made;however,chal-lenges still persist,for example,biobased foam products have poor processability,inferior com-patibility,thermal and strength *** this review,we focus on five biofoam products:namely bio-based PUs,PLA,starch,PHAs,and cellulose biofoam products,along with their prop-erties and performance,as well as their manufacturing *** efforts are still needed to unlock the full potential of these bio-based products and meet the goal of complementing and gradually replacing some of their fossil-based ***,the challenges,as well as arising opportunities of future research directions are discussed.

关键词： Biofoam Bio-based polyurethanes Polylactic acid Polyhydroxyalkanotate Starch Cellulose manufacturing process

Effect of Measurement Error on the Multivariate CUSUM Control Chart for Compositional Data

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Computer Modeling in Engineering & Sciences 2023年第8期136卷 1207-1257页

作者： Muhammad Imran Jinsheng Sun Fatima Sehar Zaidi Zameer Abbas Hafiz Zafar Nazir School of Automation Nanjing University of Science and TechnologyNanjing210094China School of Economics and Statistics Guangzhou UniversityGuangzhou510006China Department of Mathematics and Statistics East China Normal UniversityShanghai200062China Department of Statistics Government Ambala Muslim Graduate CollegeSargodha40100Pakistan Department of Statistics University of SargodhaSargodha40100Pakistan

Control charts(CCs)are one of the main tools in Statistical process Control that have been widely adopted in manufacturing sectors as an effective strategy for malfunction detection throughout the previous *** errors(M.E’s)are involved in the quality characteristic of interest,which can effect the CC’s *** authors explored the impact of a linearmodel with additive covariate M.E on the multivariate cumulative sum(CUSUM)CC for a specific kind of data known as compositional data(CoDa).The average run length(ARL)is used to assess the performance of the proposed *** results indicate that M.E’s significantly affects themultivariate *** authors haveused theMarkov chainmethod to study the impact of different involved parameters using six different cases for the variance-covariance matrix(VCM)(i.e.,uncorrelated with equal variances,uncorrelated with unequal variances,positively correlated with equal variances,positively correlated with unequal variances,negatively correlatedwith equal variances and negatively correlated with unequal variances).The authors concluded that the error VCM has a negative impact on the performance of themultivariate CUSUM-CoDa CC,as the ARL increases with an increase in the value of the error *** subgroup size m and powering operator b positively impact the proposed CC,as the ARL decreases with an increase in m or *** number of variables p also has a negative impact on the performance of the proposed CC,as the values of ARL increase with an increase in *** the implementation of the proposal,two illustrated examples have been reported formultivariate CUSUM-CoDaCCs inthe presence ofM.E’*** themanufacturingprocessof uncoated aspirin tablets,and the other is based on monitoring the machines involved in the muesli manufacturing process.

关键词： MCUSUM chart CoDa measurement error manufacturing process performance