bluuebunny/crossref_metadata_2025 huggingface dataset:
Preparation of Optical Reflective Fiber with Transparent Nylon
Authors: Li Hui Yao , Yang Sheng Lin , Li Guang , Jin Jun Hong
Published: September 2013

Optical reflective fiber has been widely used in protective clothing for road workers because of high-reflective effect which promised a strengthened visibility at night or in poor visibility. In this paper, four fibers with different cross section shape, i.e., round, triangle, rectangle and hollow pentagon, were melting spun from the transparent nylon which was analyzed and characterized previously. The spinning conditions were discussed in detail, and the hetercliteness of profiled fibers were also calculated. Both the reflectivity and brightness testing indicated that all profiled fibers showed the better reflective ability than the round one. Moreover, the mechanical, thermal and crystalline properties of round and triangle fibers after drawing were characterized.
Fashion Customization Brand Elements Evaluation System Based on Brand Model Classification
Authors: Liu Li Xian
Published: September 2013

Based on brand model and core dimensions analysis, Chinese fashion customization brand can be classified to three main kinds. Deeply interview and questionnaires faced to specialists, core customers and relative employees in fashion customization field contribute to the choice of four aspects of brand elements and nineteen sub-degree indexes. Then Chinese fashion customization brand elements evaluation index hierarchical structure can be built, which depends on the analytic hierarchy process. Simultaneously, core customization design elements can be extracted from the result of weights calculation.
Initial Analyses of Mashan No.1 Chu Tomb One-Piece Clothes in Jiangling
Authors: Zhang Yan , Cheng Long Di
Published: September 2013

Through the analysis of the shape structure and wearing form of Mashan No. 1 Chu-state tomb one-piece clothes in Jingzhou, Hubei, it can be discovered that the shape of Mashan No. 1 Chu-state tomb one-piece clothes is extremely wide and long; Also, the unique wearing method enables this sort of clothes to be flattened to be curving lower hem circling around body after wearing straight lower hem. This coincides completely with the wearing form lacquer painting, silk painting and wooden warriors wearing being unearthed from Chu-state tomb at the same period of time, which impacts the formation and development of curving lower hem clothes that is unearthed from Mawangdui Han tomb, belonging to Chu culture system as well.
Analysis on the Market Prospects of Combining Application of Fur and Knitted Fabrics in Fashion Design
Authors: Zhu Xiao Lin , Zhang Yu Jing , Sun Dan , Feng Shao Yi , Wang Dong Ming
Published: September 2013

Recently knitted fabrics with the characteristics of soft texture, good extensibility and wet and gas absorption performance have won favors of customers again. Since more and more customers are pursuing leisure, knitted fabrics are welcomed warmly [. Meantime, fur clothes have noble features and are closely with people. We can't deny that it is difficult to innovate on design. Also the exorbitant price also makes it hard to break traditional design style. Combination fur and knitted fabrics clothes offer a new design idea and has a promising market prospect.
Explore the New Mode of Chinese Clothing Brand E-Commerce Marketing through Data Analysis
Authors: Yao Hong Tao , Zhang Yi Yuan
Published: September 2013

With the continuous development of computer and network technology, people's life has been inseparable from the Internet. Consequently, Internet users rapid grow, online shopping boom, clothing industry e-commerce rapid rise, change pattern of garment industry, at the same time, the proportion keeps increasing. Through careful analyses of the data from China E-business Research Center and iResearch net, this paper researches development trend of e-commerce and clothing commerce, describes the problems existing in China clothing brand e-commerce at the present stage, further, explore new e-commerce marketing mode: O2O, studies and elaborates the operation and promotion method of Chinese clothing brand e-commerce O2O mode.
Modern Chinese Folk Clothing Accessory-Buttons
Authors: Na Wei
Published: September 2013

The structure and function of clothing buttons, to a great extent, influence the clothing modeling, covering function and use function. It is a sign of evolution of clothing. This article elaborates the modern women's clothing buttons type, and the relationship between function and aesthetic culture connotation. The conclusion is button is an important organic part of clothing.
Preparation and Characterization of Heat-Storage and Thermo Regulated Composite Material by Reaction Extrusion
Authors: Zhang Hong , Sun Di Ke , Liu Hui , Guo Jing , Gong Yu Mei
Published: September 2013

Phase change materials exhibiting excellent heat storage property can be used for energy saving applications. The textile made by fiber with PCMs can provide human body a comfortable microenvironment. The heat-storage and thermo-regulated fiber with active poly (ethylene glycol) acrylate (PEGA) as phase change materials was prepared by reaction extrusion. Poly (ethylene glycol) acrylate was grafted to polypropylene (PP) during the extrusion process. Combining preparation with functionalization, this easy method makes the entire producing process more efficient and simple. We used nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FT-IR) to characterize the structure of PEGA and PP-g-PEGA, and the results proved the synthesis of graft copolymer. Differential scanning calorimeter (DSC) was used for characterizing functional fibers thermal property. The fiber with fixed enthalpy provided heat storage and themo-regulated property. The melting and crystalline latent heat of best sample is 6.83J/g and 1.32J/g, respectively. The crystalline temperature region is from 41.67°C to 34.23°C, which is close to mean body temperature and it shows great potential in functional textile.
Comparison and Case Study of Digital Designs toward the Green Products with Denim Effects
Authors: Wang Xue Qin , Zhao Jia Wei , Li Xin Ge
Published: September 2013

Research on green manufacture is the direction of all industries, problems caused by consumptions of water, energy, and labor from denim products also are eager for advanced solutions seriously. Based on a fundamental study on present green denim clothing with fading effect, this study presents certain analysis on three new types of digital approaches of denim products. The analyses about the design principle and process of three crafts are discussed, and different design cases are presented. The different design processes have shown that the digitalized patterns simulating the denim effects are important and connected with the terminal fashionable usage. Certain detailed design methods in pattern designs are introduced. Three different methods can achieve different product effects of denim appearances, and each of them is environmental friendly and effectively.
Clothing and Health Care
Authors: Peng Li
Published: September 2013

Clothing shall be not only fashionable, vivid, exquisite but also accordant to requirements of environmental protection. It makes health care effects on the human body.
The Status Analysis of Volleyball Apparel Structure Design
Authors: Zhang Li Man , Zhao Yu Xiao
Published: September 2013

In this article, the current situation of the study about sportswear structure is analyzed , and summarized the factors that can influent the structure design of sportswear. Than combined with the characteristics of body posture in volleyball game, we found out which point need to adjust, and in different part what requirements need to be met to get the batter structure design. This discussion would provide the reference about structure design of volleyball apparel or other kinds of sportswear.
Thermal Shrinkage Effect of Fabrics in the TPP Test
Authors: Wang Min , Li Jun , Li Xiao Hui
Published: September 2013

In current standard thermal protective performance (TPP) test, as the fabric test sample is placed in close contaction with the heat flux sensor, the thermal shrinkage of the fabric when exposed to flash fire is always restricted. In this paper, the thermal shrinkage and its effect on the TPP test result was investigated. Three groups of comparative fabric sample were used for the TPP test. Two test protocols that is with or without 6.4 cm air gap between the fabric and the heat flux sensor were applied. It showed that the TPP test results of the three groups of fabric were different when there was or not air gap existing. The thermal shrinkage is an important factor to affect the TPP of flame resistant fabric and the TPP test protocol with air gap exsiting is more close to reality because it takes the effect of thermal shrinkage into consideration.
Hydrothermal Synthesis and Photocatalytic Activities of BiVO4 with Different Solvent
Authors: Li Bin , Yang Xiao Gang , Du Fang Lin
Published: September 2013

Bismuth-based oxides have attractive photocatalytic properties under visible light. Bismuth vanadate (BiVO4) particles as a visible light-responsive photocatalyst were prepared by a facile hydrothermal reaction method with the different solvent using Bi(NO3)3·5H2O and NH4VO3 as raw materials at 180°C for 18h. The as-prepared samples were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-vis absorption spectra (UV-vis). The photocatalytic activity of BiVO4 crystals was evaluated using the photocatalytic oxidation of methylene blue (MB) at room temperature under visible light irradiation. It was found that the morphology and the band gap adsorption edge of BiVO4 are different with the different solvent. The widest band gap energy of BiVO4 obtained with ethylene glycol as solvent is 2.405eV. In addition, the BiVO4 powders exhibit a certain photocatalytic properties to photodegrade MB and the maximum photocatalytic degradation rate is 34% using BiVO4 prepared with water as solvent for 2h.
RETRACTED: Analyze on the Tourism Value of Traditional Costume Culture Resources in South Jiangsu District and the Development of Tourism Products
Authors: He Ya Nan , Zhang Lin
Published: September 2013

There are abundant traditional costume resources in south Jiangsu district, such as Suzhou embroidery, clothes of watery town, blue print cloth and the others. These resources have powerful tourism values, but there are some shortages on their development, such as lack the core competitiveness product, the product grade is very low, and the brand awareness is weak, etc. So it is valuable and necessary to develop the tourism programs and merchandise with the traditional costume elements. Then we should encourage original design to inhance the competitiveness, increase the product level, win the high level consumer, propose the brand building to reach the sustainable development.
Research on Reform Vietnamese Traditional Clothing for High Schoolgirls Uniform
Authors: Le Thi Dung , Wang Jian Ping
Published: September 2013

Vietnam traditional clothing is Ao dai. Ao dai is one of Vietnamese culture, the symbol of Vietnamese women. In high school white Ao dai has become girls uniform. Although high school girls was fond of Ao dai, it was difficult for movement, especially for every day wear. Through investigation into schoolgirls about Ao dai. In this paper, we proposed to combine analysis data with traditional Ao dai design to research and reform Ao dai in such a way that it made schoolgirls wear to feel more comfortable. The samples which was made according to patterns data, one again was evaluated on fitting, appearance and comfort.
An Approach to Characterize the Thermal Deformation of Flame-Resistant Fabric Exposed to Flash Fire
Authors: Xie Yu Chen , Wang Min , Li Jun
Published: September 2013

The flame-resistant fabric is prone to shrink under the flash fire, resulting in the surface changes of the fabric. In this research, the surface morphology of flame-resistant fabric after combustion was analyzed. Based on a handy laser scanner, the 3D point cloud data of the fabric surface was acquired. Through analyzing the height variation of fabric surface and calculating the slope of the wrinkle, the morphology change of the fabric surface was obtained. According to this method, the surface deformation of three aramid fabrics after 4s exposure to the flash fire was compared. The results show that this method is effective to evaluate the bulging height, wrinkle and shrink deformation of flame-resistant fabric after exposure.
Effects of Gd on Microstructure of Mg-Al Magnesium Alloy
Authors: Li Ke Jie
Published: September 2013

The effects of Gd on microstructure of AZ71 magnesium alloy were studied by optical microscope, SEM and X-ray diffraction analyzer. The results show that the alloy mainly contained α-Mg matrix, eutectic α (Mg)+β (Mg17Al12) phase and Al2Gd phase. The microstructure of alloy was refined and homogeneous by Gd. The volume fraction of β phase is decreased with the addition of Gd, and the β-phase are congregated and coarsened with the excessive Gd.
Study on Chemical Plating and Shielding Effectiveness for Electromagnetic Shielding Fabric
Authors: Jiang Shi Li , Liu Heng , Zeng Zhao Yang , Guo Yi Ming
Published: September 2013

For the purpose of investigating the influence of different process condition on alkali reduce rate and mass increase rate, the techniques of polyester fiber pretreatment, electroless copper plating, and electroless silver plating were carefully analyzed and compared. It was found that the best coursing condition was: 5.5 mol/L concentration, 65°C temperature, 30 minutes reaction time, 1:200 bath ratio. Under these conditions, the alkali reduction rate was 11.38%. As for copper plating liquid concentration of 0.08 mol/L, pH value 9.5, 80°C temperature, liquid silver plated concentration 0.02 mol/L, the coating weight gain rate was 52.1%. Microcosmic morphology on coating surface and surface resistance test show that the fabric was evenly coated with Cu, Ag, metal ions, which resulting in excellent electric conductivity and good electromagnetic shielding performance.
Fabrication and Ultraviolet Characterization of Polyimide Film
Authors: Zhang Pan Pan , Lin Jia Qi , Yang Wen Long
Published: September 2013

A new microwave imidization method was used to prepare polyimide (PI) film in this paper. FT-IR spectrum and ultraviolet absorption spectrum are measured to study the chemical structure and optical properties of this film. The FT-IR spectrum shows that the characteristic imide groups are observed at the peaks of 727.18 cm-1, 1379.67 cm-1 and 1776.51 cm-1, which confirmed imide formation. The ultraviolet absorption spectrum reveals that optical band gap of the PI is about 2.64 eV.
A Novel Fluorescent Sensor for Ag+ and Fe3+ Based on Aggregation-Induced Emission
Authors: Ye Jia Hai , Wang Zheng Hua , Liu Jian
Published: September 2013

A novel fluorescence probe was obtained by click reaction based on the materials of etraphenylethylene (TPE) and 8-hydroxyquinoline, which were used as fluorescent group and accepter group respectively. It displays high selectivity and sensitivity towards Ag+and Fe3+in THF-H2O(2:3, v/v) as they can form stable 2:1 metal-ligand complexes.
Migration Study of Bisphenol A from Tea Bottle of Polycarbonate Plastic to Tea Water
Authors: Cao Xue Hui , Ji Shu Juan
Published: September 2013

Bisphenol A (BPA) is an important organic intermediate that is an estrogen and an environmental endocrine disrupting chemical. Bisphenol A is used widely in the production of consumer goods, polycarbonate plastics, epoxy resins. A large amount of studies have indicated that BPA might affect human health. In this work, four different tea (Tieguanyin tea, Black tea, Maofeng tea, Jasmine tea) were tested to verify if they were able to increase the BPA release from the PC cup. High performance liquid chromatography (HPLC) with fluorescence detection (FLD) was used to quantify BPA. Result showed that the heating time and temperature could have an influence on BPA migration from polycarbonate plastic. BPA migrated into tea water from polycarbonate plastic, especially when heated to high temperatures. Relatively high levels of BPA were found to be released into food simulants water from high concentration tea water.
Biodegradation Behavior of PLA/PBS Blends
Authors: Zhang Shi Jie , Tang Yi Wen , Cheng Li Hua
Published: September 2013

Poly (butylene succinate) (PBS) was mixed with Poly (lactic acid) (PLA) in the melt state. The PLA/PBS blends with different constitution were produced. The samples were buried in laterite. Samples were dug out of soil after the burial for 10, 20, 30, 40, 50 and 60 days, respectively. The weight loss and molecular weight of the sample were tested. The analysis showed that the nearly exponential decrease in average molecular weight as a function of degradation time. The PLA and PBS have the similar degradation behavior in the soil.
Research on the Properties of Functional Chitin Fiber
Authors: Liu Yan Jun , Fang Fang
Published: September 2013

Chitin fiber is a new type of green functional textile materials that can biodegradation, these years more and more people pay great attention to it for its excellent properties of antibacterial, moisture-absorption propertyetc etc.. On the basis of experimental examination, the length wise appearance and cross section appearance , the tensile properties, the moisture-absorbency, property , crystallinity, crientation, mass specific resistance and antibacterial property etc of the Chitin fiber are studied in this paper. The conclusions obtained in this paper have important reference value to the development of Chitin fiber product and its processing.
Base-Catalyzed Hydrolysis Behavior of PLA/PBS Blends
Authors: Zhang Shi Jie , Tang Yi Wen , Cheng Li Hua
Published: September 2013

Poly (butylene succinate) (PBS) was mixed with Poly (lactic acid) (PLA) through Haake Reomix, a new type of biodegradable materials can be obtained. With the increasing addition of PBS and the raise of the solution basicity, the degradation rate of blends increase sharply. The GPC analysis can approve the reduction of molecular weight in the degradation process of PLA/PBS blends.
The Effects of Initiating Systems on CPAM Relative Molecular Weight and Strength Properties of Paperboard
Authors: Yang Hui Rong , Zhao Chuan Shan , Zhang Xue , Han Wen Jia
Published: September 2013

initiator is one of the most important conditions of synthesizing efficient strength agent CPAM. To begin with initiating mechanism, three redox systems of acrylamide aqueous polymerization (NH4)2S2O8/ Na2 SO3, K2S2O8/NaHSO3 and K2S2O8/Na2 S2O4 have been studied. The effects of different kinds of initiator, initiator concentration, and monomer concentration as well as polymerization temperature on relative molecular weight and strength effects of CPAM have been investigated. K2S2O8/Na2 SO3 is the most useful system in synthesizing efficient strength agents.
Synthesis and Characterization of Novel Sulfonated Aromatic Polyamides for Proton Exchange Membranes
Authors: Hu Ya Ping , Li Guang
Published: September 2013

Sulfonated polymer membranes play an important role in PEMFC (proton exchange membrane fuel cell). Series of sulfonated polyamides were prepared by polycondensation of a CF3-containing diamine with various ratios of terephthalic acid and 5-Sodiosulfoisophthalic acid. Sulfonated polyamides were characterized by 1H-NMR, FTIR and intrinsic viscosity. The resulting polyamides exhibited outstanding thermal stability. Membranes were prepared by solution casting, then characterized by determining ion-exchange capacity (IEC), water uptake, swelling ratio, proton conductivity and mechanical properties. With the gradual growth of sulfonic acid groups from 70% to 100% (molar ratio), IEC increased to 1.0223meq/g, and proton conducticity reached up to 3.82×10-2S/cm, while water uptake and swelling ratio remained in proper values. And the tensile strength of membranes was beyond 46.63MPa, which showed very good perspectives in PEMFC applications.
The Flocculation between Partial Hydrolyzed Polyacrylamide and Cationic Microshperes
Authors: Li Guang Hui , Zhang Gui Cai , Shen Jin Wei
Published: September 2013

A serial of micro-scale cationic particles was synthesized by inverse suspension polymerization. These particles formed flocs with hydrolyzed polyacrylamide through electrostatic attraction. The structure of these flocs evolved from a bulk state to insulated microspheres at a critical salt concentration, which increased with increasingly cationic degree of particles, corresponding to the change of Zeta potential. Moreover, the adsorbance of HPAM on the cationic particles attained a maximum about 409 mg/g at 500mg/L HPAM in salt-free water and 237 mg/g at 800mg/L HPAM in 2wt% NaCl solution at 20°C according to a semi-quantitative method implemented by viscosity contrast experiment. This adsorbance difference accounts for that the electrostatic shielding effect of salt stimulates the desorption rate of HPAM.
Information Flows and Design Intent in the Core of Future Product-Services in the Field of Manufacturing Industry
Authors: Lanz Minna , Järvenpää Eeva , Andersson Paul
Published: September 2013

Knowledge builds on data and/or information that is organized and processed to convey understanding, experience, accumulated learning and expertise. At the moment, the volumes of data and information are quickly growing uncontrollably. The sheer amount of data, that lacks the structure, connectivity and intent, cannot be utilized efficiently later on. There is ever the greater need to transfer this unstructured mass of bits and bytes to meaningful information and to human understandable knowledge, as it is understood in the industry. However, there are major challenges in understanding the essence of information flow that should connect the different design departments and activities to be part of the life-time information of a product, including its processes and services. The paper introduces a vision where the semantically rich product-process information flows through the life-cycle phases – design, manufacturing, services – of a product or a system, and thus increases the content knowledge.
A Fast Approach of Locating Complex System Design Errors
Authors: Chen Zhi Yuan , Huang Shao Bin , Han Li Li
Published: September 2013

Model checking technique can give a specific counterexample which explains how the system violates some assertion when model does not satisfy the specification. However, it is a tedious work to understand the long counterexamples. We propose a genetic algorithm to enhance the efficiency of understanding long counterexample by computing the minimal unsatisfiable subformula. Besides, we also propose a Craig interpolation computation-based method to understand counterexample. The causes which are responsible for model failure are extracted by deriving interpolation from the proof of the nonsatisfiability of the initial state and the weakest precondition of counterexample. Experimental results show that our methods improve the efficiency of understanding counterexamples and debugging significantly.
Improving Green Product Design with Closed-Loop Product Recovery Information
Authors: Ng Yen Ting , Lu Wen Feng , Song Bin
Published: September 2013

It is widely agreed that environmental issues, from climate change to energy and water scarcity, to over exploitation of natural resources, represent critical challenges for the society. Thereby, industry has progressively adopted lean manufacturing by reducing amount of energy and materials used in the production. However, manufacturer has limitation towards improving product efficiency without feedback from user as a close loop. Knowing the complexity of environmental issues and economy changes, this paper introduces a new system framework that takes the holistic approach by capturing information at end-of-life (EoL) and feeding back to design or manufacturing in making a greener product. With complete understanding of EoL product status, it enables OEMs to develop technology diversely and at the same time rapidly incorporating environmental concept in part of the product chain. For instance, the valuable knowledge learned in EoL product put forward a more efficient way for product maintenance by cutting down time, cost and negative impact to the environment. Moreover, a greater reliable product could be achieved by utilizing appropriate material or design in particular product. This resulted in improved product design as an inherent loop in product life cycle, therefore producing greener product for better reusability, remanufacturability and recyclability. Overall, efficient EoL product recovery system enables sustainable and competitive manufacturing, and thus drives the economy growth.
A Feature-Based Section Curve Reconstructing Strategy
Authors: Zhu Hai Tao , Cong Liang
Published: September 2013

ntegrating section feature recognition with forward design is an effective method to reconstruct section curve and change feature architecture patterns from 2D to 3D. This paper proposes solutions to filter the points on the slices of point cloud data, automatically sequence the points on slices, recognize section curve feature, fit each curve segment and reconstruct section curves. All the relevant algorithms are implemented in Matlab. The point cloud data of sighting scope is used to validate the strategy. Also, Error analysis is carried out in Geomagic Studio. This strategy proves its feasibility and accuracy of completing reverse modeling process.
Research Trend of Green Design
Authors: Li Yi Meng , Xiong Yu
Published: September 2013

Green design, which integrates environmental factors into product design and innovation as opposed to the traditional product development, has significant implications for management theory and practice. A preponderance of special issues on this topic have emerged for a decade, so there is need for reviewing existing literature to help researchers and practitioners in understanding integrated green design from a wider perspective. This research makes a novel contribution by synthesizing existing literature and develops a succinct classification of existing literature on green design into three categories: design for environment, design for disassembly and design for recycling. Finally, we analyze the evolution of green design over the past decade together with the avenues for future research. The impact of government behavior on the manufactures’ design decision and customers’ acceptance of green product is an interesting research trend. There is need for green design methodologies that integrate design of products and processes.
Simulation Research on Small Scale Wind Power Generation System Connected to DC Micro-Grid
Authors: Qian Su Xiang , Xiong Yuan Sheng , Zhan Yan , Xu Ju Wu , Shen Xiao Mei
Published: September 2013

The small scale wind power generation system is connected to DC micro-grid, which is composed of the small scale wind power generation system, battery, load, DC/AC converter, DC/DC converter, bidirectional DC/DC converter and DC bus. Simulation research is done for the small scale wind turbine model which is connected to the DC micro-grid. The output voltage of boost converter will change in real time by adjusting the PWM duty cycle. The maximum power point of wind power generation system is tracked by using the MPPT(maximum power point tracking) control strategy of perturbation and observation. The simulation results of DC micro-grid show that the tracking of wind turbine maximum power point is normal in the system.
An Experimental Stress Analysis of a Jib Crane
Authors: Candas Adem , Kurt Serpil , Gerdemeli Ismail , Kayaoglu Eren
Published: September 2013

Jib cranes are a kind of material handlingmachines using in the industry such as factories, shipyards, constructionareas, and storages. Standards and regulations about them are published by API(American Petroleum Institute), FEM (The Federation Europeen de la Manutention)et al. In this study a jib crane designed by an engineering work group, were examinedin terms of static structural test analysis before put it into use according tothe API Spec 2. Firstly, critical areas, which have the highest stress values,were determined by finite element method in a commercial analysis program. The nextstep is the application of strain gages on the structure and initial referencetest values are obtained just before the assembling. Two tests were done afterthe jib crane was assembled under circumstances with no load and test load.Finally, strain and stress values were calculated and the resulting stressobtained from tests and finite element method analysis results were comparedwith each other.
Free In-Plane Vibration Analysis of Annular Plates with General Boundary Conditions
Authors: Shi Dong Yan , Shi Xian Jie , Li Wen L. , Qin Zheng Rong
Published: September 2013

An analytical method is derived for the free in-plane vibration analysis of annular plates with general boundary conditions. Under this framework, all the classical homogeneous boundary conditions can be treated as the special cases when the stiffness for each restraining springs is equal to either zero or infinity. The improved Fourier series solutions for the in-plane vibrations are obtained by employing the Rayleigh-Ritz method. A numerical example is presented to demonstrate the accuracy and reliability of the current method.
Dynamics Analysis and Vibration Isolation Design of Shared Foundation on Marine Turbo Generator Set
Authors: Liu Chong , Qiu Chang Hua , Gao Lei
Published: September 2013

Considering the ship's limited space, high speed and miniaturization have been design directions in marine turbo generator set. The shared foundation with steel plate welding is designed to support the marine turbo generator set. Stiffness and dynamic characteristic of the shared foundation will directly affect the stable operation of the turbo generator set. The paper established the dynamics analysis model for the shared frame of marine turbo generator set according to the 'Lumped Mass Method'. Taking account of the frequency-domain analysis operability, the operational modal analysis and dynamical response on foundation were carried out by Virtual Lab. Based on these results; the intensity and location of exciting force were ascertained. And then, we designed the shared foundation vibration isolation system, and analyzed the characteristics of the vibration isolation mounting. The result shows that the vibration isolation system can minimize output force transmissibility and reduce the effect of the marine turbo generator set vibration.
Modeling and Optimization of Process Parameters of a DF-CCP Etcher Chamber
Authors: Xu Xia , Feng Juan , Tian Ling
Published: September 2013

Dual-frequency capacitively coupled plasma (DF-CCP) etcher has become the mainstream in dielectric etcher. By building a 2D axisymmetric model of 300mm DF-CCP etcher in CFD-ACE+ software, plasma simulation experiments are carried out by orthogonal design. Then a process model based on simulation results is proposed to analysis influence of key process parameters including high frequency voltage, low frequency voltage, and chamber pressure and center/edge flow ratio on chamber plasma characteristics. Finally, to get high plasma uniformity and plasma density, process optimizations are carried out.
Parametric Camshaft Mechanism for Adaptive Building Envelope and Kinetic Building Ornaments
Authors: Sjarifudin Firza Utama
Published: September 2013

This paper offers development of the building envelope that aims to revive a new expression of traditional decorative elements by applying digital technology as well as having an adaptive function. This paper also proposes a camshaft mechanism system to transform the pattern of traditional ornament that uses pre-programmed analysis data of environmental changes to parametrically drive the number of rotation phase and Lobe Lift that generates the shape of camshaft. Furthermore, this shapes drives the transformation of the basic pattern. In conclusion, this paper has developed a prototypical tool that facilitates the new approach to kinetic decorative ornaments on building envelopes.
Production Scheduling for Sustainable Manufacturing Systems
Authors: Ichoua Soumia , Pechmann Agnes
Published: September 2013

In this paper we investigate the elaboration of an efficient production schedule for sustainable manufacturing systems. Because renewable energies are irregular by nature as they often depend on meteorological conditions (e.g. wind and solar energy), their use in the competitive field of manufacturing production must be addressed with caution. The challenge is to elaborate a reliable production schedule that accommodates energy stochastic fluctuations while satisfying customer and operational constraints. We propose to solve the problem using a meta-heuristic based on Tabu search and discuss major elements that are critical to the success of this approach.
An Approach for Manufacturing Process Representation in Product Lifecycle Management
Authors: Shariatzadeh Navid , Sivard Gunilla , Lindberg Lars
Published: September 2013

Current PLM systems have concentrated on product design, not on manufacturing engineering with its development of e.g. Material flows and layouts. This paper proposes an approach to describe how to represent the main required manufacturing process data using ontologies together with generic data standards. This approach makes it possible to develop translations between different software, and also providing users with the meaning of different concepts. It contributes to an efficient management of manufacturing information, with a focus on the material flow information as used in Discrete Event Simulation - DES.
Defining the Social Dimension of Sustainability in Product Design
Authors: Watkins Matthew
Published: September 2013

This paper presents a summary of a larger study into the formulation of a set of criteria for consideration of the Social criteria of Sustainable Product Design (SPD). A multidisciplinary literature review was conducted, which was developed further through semi structured interviews with nine experts in the field of sustainable design education. These interviews were conducted face to face and responses were analysed using the coding and clustering technique. A list of criteria was refined and these were used to inform a doctoral study which considered effective teaching and learning methods in the social aspects of SPD.
Provision of Long Item Materials
Authors: Straub Markus , Zhang Shu Jun , Manz Carsten , Hapeshi Kevin
Published: September 2013

Purpose: This paper shows the effects of using Minomi on the provision of long items in the plant area. In details it will be evaluated if the Minomi principle is usable for the provision of long item material at the manufacturing area and what improvements can be achieved. Definitions of the term Minomi and the term long item: The term long item is used in the logistic sector for all materials that are longer than 2.5 meters, require individually packing and have a relatively small cross section [1,2]. The term Minomi has not been clearly defined. In practise, the term Minomi is often associated with a system that does not use boxes for the material provision [3]. Findings: Through the case studies, it has been found that additional advantages can be obtained by using Minomi for the provision of long items than the other existing methods.
Application of Unstructured Finite Volume Method in Structural Static Mechanics
Authors: Chen Wei Dong , Yu Yan Chun , Wu Xian De , Li Jian Cao , Jia Ping , Zhang Feng Chao
Published: September 2013

Unstructured finite volume method applied in structural static mechanics has been discussed to direct at the difficulty of dealing with irregular boundary, unstructured triangle elements have been used in computational domain, the basic equations of unstructured finite volume method applied in structural static mechanics has been deduced. Comparing the unstructured grids with the structured grids, the former has obvious advantage on dealing with irregular boundary by theoretical analysis. According to examples analysis, the comparison of numeric results with analytic solutions and FEM solutions showed the effectiveness of the unstructured finite volume method.
Research on Statistical Parameters of 3-D Roughness for Micro Wire Electric Discharge Machining Surface
Authors: Guo Li Bin , Cui Hai , Zhang Bin , Zhang Zhi Hang
Published: September 2013

Amplitude parameters and functional parameters of three-dimensionalroughness are established by statistics geometry. Since micro wire electric discharge machining (MWEDM) surface approximately follows the Gauss distribution, its statistical characteristics are different from cutting processing surface. Characterization meaning between MWEDM surface and cutting processing surface is rather different. This study begins with shape parameters’ mathematics essence of surface height distribution of three-dimensionalroughness, analyzes their definite characterization meanings for MWEDM surface, deeply researches bearing ratio curve of MWEDM surface, reasonably ascertains its functional areas and finally establishes nine functional parameters where volume parameter is the main one.
Improvement Arithmetic Method of Space Parameters of 3D Roughness for MWEDM Surface
Authors: Guo Li Bin , Zhang Bin , Cui Hai , Zhang Zhi Hang
Published: September 2013

Since 3D micro-topography of the Micro Wire Electrical Discharge Machining (MWEDM) surface is an isotropy surface which is composed of innumerable ellipsoid profile peaks and pits, shape and distributing characters of surface structure can bring direct influence on characterization precision or calculating method of 3D roughness parameters, which needs considering surface measure direction or is influenced by surface structure. Through researching structural characters of 3D micro-topography of MWEDM surface, this article improves arithmetic method of space parameters of 3D roughness influenced by structure, which predigests calculating process and advances calculating precision.
Structural Analysis of Horizontal Tidal Current Turbine Main Shaft
Authors: Kong Fan Kai , Zhu Yong Wei , Li Yan Tao
Published: September 2013

The structure design of the horizontal axis’ tidal current turbine whose power is 100 kW is presented in this paper. The stress condition of the tidal turbine’s main shaft was analyzed, and the analysis model of the shaft was established. Applying the engineering calculation and the finite element method respectively, the strength and stiffness of the main shaft was analyzed and checked. Under the two conditions when the main shaft rotated under rated power and rotated at low speed, the fatigue life of the main shaft was analyzed and calculated. The result shows that the main shaft can meet the requirement of the design. The analysis method is a more precise method for the research of the tidal current turbine’s shaft parts. The project has project has practical significance in engineering application in the future.
Numerical Analysis of Feed Rate Influence on Hollow Hub Shape during Rolling Extrusion Process
Authors: Bartnicki Jarosław
Published: September 2013

This paper presents the results of numerical calculations of rolling extrusion process of a hollow hub. Due to the necessity of flanges manufacturing at both sides of the product, in the analyzed process of rolling extrusion, as additional tool limiting axial metal flow a rear bumper was implemented [1,. Numerical calculations of the hub forming process were conducted basing on finite element method, applying software Deform3D v.X in conditions of three dimensional state of strain. The obtained small shape faults, in the form of characteristic triangulation and small changes of the hub walls thickness, show that it is possible to conduct the further research works of experimental character, with the application of modernized aggregate for the rolling extrusion process PO-2.
Disassembly Sequence Planning of Steam Turbines for Virtual Maintenance
Authors: Zhu Hai Tao , Cong Liang
Published: September 2013

Disassembly Sequence planning is the important module of virtual maintenance. Its foundational task is to test the disassemblability of parts, find out all the feasible disassembly sequences of targeted parts and search for the near-optimal disassembly sequence. In the paper, the spherical algorithm is used to test the disassemblability of parts. And then the disassembly direction of parts is determined by rules which are the simplified version of Gaussian map approach. Thus the near-optimal disassembly sequence is found out by optimizing all feasible disassembly sequences of targeted parts by ant colony algorithm. The simulation result of the sequence optimization proves to be the same with manual calculation considering comprehensive cost of the change of disassembly tools and disassembly directions. The set of approaches can be reference for disassembly sequence planning of large-scale mechanical products.
Problem Analysis of Conoprobe in Gear Measurement Application
Authors: Liu Jiang Sheng , Qian Juan
Published: September 2013

Conoprobe is used for non-contact measurement utilizing conoscopic holography technology, which has characteristics of high measurement precision and large measuring angle range. However, the conoprobe performs inaccurate and instable in gear measurement applications. To verify its accuracy, an experiment setup is built using high performance coordinate measuring machine (CMM) to measure surfaces of gaugeblocks that have similar material as gear workpieces. Compared the collected data from the CMM with the conoprobe values, those problems mentioned above are validated. In this study it can be stated that measuring accuracy of conoprobe drops dramatically when measuring bright metal surfaces, and even its measuring error could be more than dozens of microns when the measurement is in large angle, therefore it is completely not fit for precision measurement applications.
On Strain of Gear Meshing Thermo-Mechanical Coupling
Authors: Hu Yu Mei , Zhang Fang Jian , Shao Yi Min
Published: September 2013

Involute helical gears are widely used in high-speed and heavy-load transmission systems of automobiles, helicopters, etc. Poor working conditions lead to fatigue crack and other faults of gear key parts such as tooth face and tooth root. To identify the root causes of gear faults, strain monitoring methods are often used to monitor the stress changes of gear key parts so as to work out individualized improvement plans. However, stress of gears in the work process is typically the result of the coupling effect of thermal stress and mechanical stress. The existing strain monitoring methods cannot separate them effectively, and thus it is impractical to quickly find the corresponding improvement measures. To reveal the coupling relationship between thermal stress and mechanical stress during gear meshing and find out the source of gear faults, this paper uses the transient finite element-based analysis method to study the coupling relationship between thermal strain and mechanical strain of a pair of helical gears in the test direction and find the coupling rules of thermal strain and mechanical strain among the strains of gears in the strain test direction that may provide effective guidance for the fault diagnosis of gear meshing.
Development of Friction Properties Experimental Device of Mechanical Seal Material in Vacuum Working Condition
Authors: Zhang Feng , Song Bao Yu , Sun Jia Peng , Zhang Song
Published: September 2013

Mechanical seal plays a very important role in rotating machinery for space exploration, but it is very difficult to estimate its friction performance by simulative experiment. In this paper, a experimental system for measuring friction properties of mechanical seal materials used in spacecraft is developed. It is able to provide some adjustable parameters in the experiment, such as environment temperature -60°C~60°C, load 100N~300N, rotational speed of 30r/min~110r/min and atmospheric pressure and high vacuum. Friction coefficients of babbitt graphite M120B and hard alloy YG6 are obtained by the test rig and the experimental results testify that the device can conduct simulative experiment effectively.
The Effect of Bearing Surface Finish on Engine Performance
Authors: Nyamugure K. Diana , Cheshire David , Barber Alan H.C.
Published: September 2013

In the automotive industry the goal for engine designers is not purely power output. Stringent environmental regulations demand improvements in power, fuel consumption, reliability and service life of engine components. A significant contributor to all of these improvements is a good understanding of the tribology of bearings including the effect that surface texturing techniques can have on bearing performance. This paper discusses the micro finishing process known as GBQ (Generating Bearing Quality) which optimizes bearing surfaces in terms of profile, geometry and surface finish. GBQ has been applied to the bearing surfaces of high performance and mass produced crank and camshafts to reduce friction and extend service life.
The Research on Oil-Air Lubrication in Grooved Sliding Bearing
Authors: Wang Jin Li , Li Li Quan , Liu Shao Gang
Published: September 2013

Many Factors affect the oil-air lubrication of sliding bearing such as oil supply, air pressure, load, bearing structure and so on. In order to study the effects of bearing structure on oil-air lubrication in sliding bearing, the oil-air lubrication and oil lubrication experiments of grooved sliding bearing have been done by using friction-abrasion testing machine. By means of measuring the temperature rise and the friction coefficient of grooved sliding bearing on oil-air lubrication and oil lubrication with different level of load at the same rotating speed, the results obtained show that the friction coefficient of oil-air lubrication with oil supply 30ml/h, air pressure 0.25MPa is almost the same as oil lubrication with oil supply 1.4L/h. The oil-air lubrication temperature rise is much lower than the oil lubrication in grooved sliding bearing with the same experimental conditions.
Shear Traction and Sticking Scope of Frictional Contact between Two Elastic Cylinders
Authors: Zhao Ya Ping , Wang Quan Bin , Zhang Yi Min
Published: September 2013

In this study, the frictional contact with partial slide between two elastic cylinders is considered. According to the Spence’s self-similarity condition, a system of singular integral equations is constructed with respect to the normal pressure and the shear traction in the contacting area. Based on the Goodman’s hypothesis, the preceding system is uncoupled. Based on this, the tangential load in the central sticking zone is possible to be obtained analytically by means of the theory on the singular integral equation. Besides, a nonlinear equation with respect to the ratio of the slip and adhesive zone sizes is derived on the basis of the continuity of the tangential load. The stick zone size can thus be determined by solving the nonlinear equation mention above iteratively. A numerical example is provided to verify and validate the theory proposed in this work.