bluuebunny/crossref_metadata_2025 huggingface dataset:
The Comprehensive Study on Virtual Manufacturing
Authors: Ji Chang Jun
Published: September 2011

The virtual manufacturing is an advanced manufacturing technology which came into being in 1990s. Due to fierce market competition, manufacturers are making radical changes in management practices and investing greatly in advanced technologies in order to achieve sustainable competitive advantage. Under this circumstances, the virtual manufacturing technology was formed gradually. Nowadays, the concordant understanding of virtual manufacturing is: set up the virtual model of production system and then simulate the real manufacturing process. According to that, it’s obvious to find that without real manufacturing process, the satisfaction of virtual model production system can still be verified. If some changes about the virtual manufacturing model need to be done for optimizing production system, the right of making corresponding changes is rested in manufacturer’s hands and it’s easier to obtain the optimization by the means of virtual manufacturing than the traditional ones. Virtual manufacturing has made rapid progress in the 21st century. This article introduced the definition and characteristics of virtual manufacturing and its classification and key technologies, its development and application situation, and finally, we pointed out the developing trend of virtual manufacturing and gave some suggestions on that.
Finite Element Analysis and Experimental of Milling Force for Aeronautical Thin-Walled Workpiece
Authors: Yu Jin , Shi Yu Xiang , Yang Gui Wu
Published: September 2011

Traveling load and rotating load can be applied to the tool on the basis of analyzing the relative position between tool and workpiece in assemble model of finite simulation, a finite element model based on trochoid-motion is built. In order to reduce the simulation time, the transition mesh method was used to optimize the finite element model. This paper considers performance parameter of the workpiece, and studied the variation regularities of milling force on the Aeronautical thin-walled by using ABAQUS. At last the experiment shows that the finite element model was verified to be feasible, and the result is reliable.
Analysis on Dynamic Characteristics of HTC100 NC Lathe Bed
Authors: Lu Mo Wu , Zhang Guo Ming , Zhao Wei Qiang
Published: September 2011

The processing performance is closely related with dynamic performance and the dynamic performance is one of the most important performance indicators which is affecting the performance and product quality. The machine is affected most by the dynamic performance of machine bed. The modal analysis method is used to analyze the dynamic performance of the machine. In this paper, the modal analysis of lathe bed is conducted. A 3D solid model of HTC100 NC lathe bed is built with SolidWorks. In order to facilitate the finite element analysis, the model of lathe bed is simplified. The modal analysis of lathe bed is calculated with ANSYS Workbench 12. The first six natural frequencies and corresponding modes are obtained through modal analysis of the lathe bed. According to the low-order natural frequency and modal vibration shapes, the rigidity vulnerable area of lathe bed is realized, which provides the reliable theory to improve lathe bed structure.
Diffusion Channel of Generic Technology in Equipment Manufacturing Industry
Authors: Yu Zhong Hai
Published: September 2011

Based on the study of characteristics, classification, and propagation principle of equipment manufacturing generic technology, a technological diffusion model of equipment manufacturing generic technology is developed in this paper. Utilizing the established model, the diffusion approach of digital design technology which is one kind of the equipment manufacturing generic technology is analyzed, which is an empirical study of technological diffusion method of equipment manufacturing common technology. The study is meaningful to accelerate the technological diffusion speed of equipment manufacturing and promote the development of equipment manufacturing industry.
Study on the Reverse Designing for Water Cavity Model of Engine’s Cylinder Head
Authors: Chen Min , Liu Xiao Xu , Tian Jian Ping
Published: September 2011

The water cavity model of engine’s cylinder head is reconstructed by CAD through slicing method. The reverse design methods which are used for complex interior structure’s surface are explored based on slicing method and using software such as Imageware and UG, through modeling the water cavity. The technologies of reverse design such as the measure method of points cloud, points cloud data treatment, curve fitting, fitting error analysis, surface reconstructive and solid modeling are studied. The reverse methods for complex surface are put forward which are based on blocks and features of model. Through the practice of reversing design for cylinder head water cavity model, it is proven that the complex inner cavity components can be reversed by slicing method. The methods can be referenced for similar reverse design.
Numerical Simulation and Analysis of High-Strength Steel Autobody Panel Stamping
Authors: Zhao Dong Xu , Tang Yu Jia , Pei Zhi Hao
Published: September 2011

The high-strength steel blanks with higher yield strength had introduced many challenging formability problems for the stamping process. However, in some situations the multi-stage process is a very effective solution for the stamping of high-strength blanks with a relatively lower formability than that of commonly steel blanks. In the multi-stage process, the change of strain path will be beneficial to the reduction of strain peaks and the utilization of the potential plasticity.
Research on Realization Mechanism of Case-Based Reasoning System Facing the Industrial Design
Authors: Zhang Wen
Published: September 2011

The research in mainly conducted on the realization mechanism of CAS (Computer Aided System) facing the Industrial Design, though analysis on the discipline characteristics of Industrial Design as well as the design process based on the PCM method, the advantages as well as feasibility of case-based reasoning system as a kind of system building pattern is discussed. Based on the combination of the discipline characteristics of Industrial Design and the theory of case-based reasoning, the research on the comprehensive realization mechanism is conducted on aspects in the form of systematic function module planning, major problems and solutions involved in all links as well as key technology discussions, providing reference for the establishment of the case-based reasoning system together with the construction of similar auxiliary systems facing the Industrial Design.
Research on NC Process Information Integration Method Based on Database and Heterogeneous CAM Programming Platforms
Authors: Zhu Ming Ying , Tao Jian Hua , Liu Xiao Chu , Liu Hua
Published: September 2011

In this paper, the research focus on NC process information integration methods based on database and process information extraction from macro files of heterogeneous commercial CAM platforms. First, analyzed the macro file characteristics of studied CAM system to build heterogeneous systems variables mapping table and establish standard macro file for each studied CAM systems; Second, designed macro file self-learning mechanism based on characteristics of the macro file, extracted implicit process information in macro files and saved to build General process Database; Finally, used the General process Database and the standard macro files to generate target macro files to achieve automatic programming. The process Information integration method in this research improved the efficiency and processing quality of NC machining, and made excellent process experience well inheritance and reuse.
Method for Design of Integral Shaped Milling Cutter Profile
Authors: Sun Qing Yun , Wang Zhao Wu , Shan Yu Xia , Bai Yan Feng
Published: September 2011

Nowadays the profile of integral shaped milling cutter is designed by diagram method. This method is low efficiency and bad precision. This paper deals with the application of conjugate surface theory to the profile design of integral shaped milling cutter. According to the structural characteristics of integral shaped milling cutter, the method for design of cutter profile to wood workpiece is investigated by use of conjugate surface theory. In the present study, the curve equations for integral shaped milling cutter profile are put forward, based on principles of coordinate transformation, mill cut mechanics and conjugate surface theory of differential geometry.
Design for the Resistance Automatic Adjustment System of Multifunctional Interactive Fitness Bike
Authors: Li Dong Wei , Long Zhi Jian , Chen Xiao Min
Published: September 2011

As people’s life quality rise continuously, the fitness industry has developed fast. At present, people mainly focus on the improvement and research of fitness bike’s comfort and security, not on the movement manner. Thus it causes the movement process to be drab and boring, which has negative effect on the exercise. Therefore, Shenzhen Institute of Advanced Technology developed a new kind of multifunctional interactive fitness bike. Its characteristic is that both hands and feet can driver it independently, which can add different movement manners. This paper mainly aims at designing a new kind of resistance automatic adjustment system according to its unique drive mode. This system can make the rider obtain smooth and comfortable feel. At last, through the manufacturing and debugging of the prototype of fitness bike, we know this scheme is feasible.
Cooperative Optimal Method for Two Level Models of Micro Device
Authors: Liu Zheng , Chen Hua
Published: September 2011

With the gradual complication of micro devices, the poor manufacturability of product becomes a bottleneck. In this paper, we discuss the optimal design method that involves the model restriction, model revising and cooperative design management. Firstly, the design rules checking for the original model is introduced, which constrains the 3D models into an appropriate form to satisfy the manufacturing requirements. Then, the informational description of micro device involves two levels. The device level modeling focuses on geometric information, while the process level modeling works at manufacturability. Based on the two level models, the model revising procedure is performed in cooperative design environment. Furthermore, a polysilicon electro-thermal actuator is used to illustrate the cooperative optimal design approach.
Study on Logistics Management Platform Function
Authors: Wang Qing Jun , Wang Shou Jin
Published: September 2011

With the continued expansion of logistics business, and the growing number of network node, enterprises scale will be expanded, including: business department, offices, and even branches, as well as multi-level agents, partners and so on. Conducting business in this complex interwoven network, the logistics business appears to be inadequate in the ways of business, finance, management. This paper provides the modern integrated logistics management platform with a set of comprehensive globalization solutions.
Design and Numerical Analysis of the Internal Suction Flow Heat Sink
Authors: Jiang Fan , Zhang Chun Liang , Xiang J.H.
Published: September 2011

The traditional heat pipe has shortage about interference of evaporator channel and return channel, separating evaporation channel with the return channel, building in axial pump to force the fluid flow, the internal suction flow heat sink with forced circulation is designed. By numerical simulation, this heat pipe has a better effect to heat transfer. The influences of structural parameters to heat transfer effect are analyzed.
Study on the Rapid Progressive Die Design of Sheet Metal with Free Form Surface
Authors: Li Xiao Da , Zhan Xiang Hui
Published: September 2011

The structure of progress die is generally more complex and need higher precision, so it needs a longer development cycle, especially for the progress die design of sheet metal with free form surface. In this paper, taking a relatively complex part with free form surface for instance, NX PDW which has highly automated design capabilities was applied to finish the mold design, and the key steps and methods of designing such parts with PDW was put forward. In the design process, the stamping simulation software Dynaform was also applied to simulate the key process to predict forming defects and assess the formability of sheet metal. The results show that the application of Dynaform and PDW can improve the design quality and efficiency greatly.
Tribological Applications Considering Roughness Effects on Grain Flow
Authors: Tsai Hung Jung , Horng Jeng Haur , Tsai Hung Cheng , Huang Pay Yau
Published: September 2011

The grain flow lubrication, based on Haff's grain flow theory and the Patir/Cheng flow factors method, is applied in the simulations of rough slider bearings and chemical mechanical polishing. In this paper, the results of flow factor, the performance of rough slider bearings and the mechanism of the CMP process for grain flow are briefly demonstrated. An improved CMP model, considering the partial hydrodynamic grain flow lubrication and elastic-plastic microcontact theory, is also proposed. The contact area ratio and the elastoplastic contact area ratio are presented to improve the understanding of CMP mechanisms.
Graphic Thinking Process in Innovative Product Design
Authors: Pi Yong Sheng , Yang Yuan Yuan
Published: September 2011

This paper aims to discuss graphic thinking increasingly ignored as the continuous development of information technology. In this paper, the author mainly discussed the importance of graphic thinking, the method of establishing graphic thinking mode and the specific application of graphic thinking in design. In this way, the core function and value of graphic thinking in innovation design process can regress
Processing and Crystal Microstructure of Porous High Pressure Crystallized Nanodiamond/UHMWPE Biomedical Nanocomposite
Authors: Chou Chau Chang , You Jyun Hao , Wu Cheng Lun
Published: September 2011

A novel processing technique using a series of mixing/refluxing procedures and high-pressure crystallization (HPC) to fabricate nanodiamond/ultra high molecular weight polyethylene (ND/UHMWPE) nanocomposites for biomedical application was examined. For better mimetic lubrication, a porous structure was implemented in this study. Vitamin E as an anti-oxidation additive was also incorporated in selected porous specimens. The morphology of the specimens was investigated by transmission electron microscopy. The phase and crystal characteristics were revealed by Raman spectroscopy and X-ray diffraction. Shore D hardness was used to study the effect of the material’s porous structure and particle-induced crystallization on the bulk mechanical property. The dispersion of NDs in the UHMWPE matrix can significantly promote the crystallinity of the HPC specimens, even with a porous structure. However, the bulk hardness does not reveal this improvement in crystal microstructure.
The Physical Characteristics of Bio-Oil from Fast Pyrolysis of Rice Straw
Authors: Yang Shou Yin , Wu Chih Yung , Chen Kun Ho
Published: September 2011

Rice straw is one of the main renewable energy sources in central and south Taiwan. In this study, bio-oil was produced from rice straw using a bench-scale plant that included a fluidized bed, a char removal system, and an oil collection system using an oil-recycling spray condenser. We investigated the effects of pyrolysis temperature and carrier gas flow rate on the distribution of products and on the properties of the bio-oil obtained. Experiments were conducted at reactor temperatures of 350–500 °C with carrier gas flow rates of 7.5–15 L/min and a feed rate of 1 kg/h. The results indicated that the optimum reaction temperature and carrier gas flow rate for the production of bio-oil were 450 °C and 10 L/min, respectively. The highest percentage of bio-oil in the products in these experiments was 41.3 wt%. The pH value of the bio-oil was ~4.1 and the viscosity was ~9 cSt (at 25 °C), depending on the storage time, temperature, and char content. This study establishes the operating parameters of a biomass fast pyrolysis system and provides some properties of rice straw bio-oil relevant to storage and use.
The Tungsten Density Distribution and Tribological Performance Analysis of Carburized Medium Carbon Steel with Tungsten Ion Implantation
Authors: Chu Hsiao Yeh , Lin Jen Fin , Chiu Yung Chin , Chang Hsi Cherng
Published: September 2011

This research studies the effect of implanted tungsten ion on the wear mechanism after ionized tungsten was implanted into material surface as tungsten could improve surface hardening ability and increase wear-resistant property. washer-on-disk wear tests were used to study the change of average friction coefficient and total wear rate. Auger electron spectra (AES) analysis, surface profiler and Vickers hardness tester were utilized to realize the relation among hardness distribution, tungsten ion distribution, and hardened surface. From AES, it indicates that the tungsten had high density distribution when tungsten content is at the depth of 0.25 µm and 0.92 µm, among which the depth of 0.25 µm has the highest density distribution. Vickers hardness test shows that 10 gw load can obtain the highest Hv. The decrease and increase of Vickers hardness value is because tungsten is unevenly distributed. The friction coefficient decreases along with the increase of load under constant rotating speed. The friction coefficient of high rotating speed is smaller than that of low rotating speed. The total wear rate is in proportional to the load under the same turning speed.
Kinematics Simulation and Optimization for the Mechanism of 5R-P
Authors: Li Wei , Tsai Gwo Chung , Hsu Bih Sheng , Li Wen Zhuo
Published: September 2011

This study first establishes a mathematical model of 5R-P kinematics with the closed-loop vector method, then the corresponding M functions are written, at the same time, the 5R-P kinematic simulation model is built by virtue of Matlab/Simulink. From the simulation, the displacement, velocity and acceleration curves of slider can be obtained on condition that the appropriate initial conditions are set beforehand. Finally, Taguchi method is introduced to this mechanism to optimize the design of each link’s length, and a more reasonable combination of each link’s length allows the 5R-P mechanism to perform better. Most kinds of complicated linkages can be commonly designed in this method, which is parametrized more efficiently. What is more important is that this method can also be introduced to deal with the dynamic analysis of the linkages for the purpose of carrying out a more comprehensive design and optimization.
Study on the Effect of Slope Stability by Bedrock Softening under the Condition of Strong Rainfall Infiltration
Authors: Yang Zhi Gang , Jiang Ling , Wu Hai Zhen
Published: September 2011

In recent years, the extreme weather has caused a serious effect to the engineering, strong rainfall is the important reason result in debris flow frequent happens. For the problem of slope stability under the condition of strong rainfall, this paper adopted the strength reduction by FEM, combining case of slope, analyzed the causes the bedrock soften under the condition of normal and strong rainfall separately, band slope appears the phenomenon of saturated water softening under strong rainfall, an d its physical mechanical properties and strength greatly reduce. The conclusion can be obtained that the problem of slop safety and stability is caused by bedrock softening. Following bedrock strength decreases by step, then slop loses safety and stability.
Empirical Analysis of Performance of Public Organizations Based on DEA Model
Authors: Wei Bin , Niu Wen Di , Luo Yu
Published: September 2011

Performance evaluation of public organizations is a problem we are facing at home and abroad. Objective and overall quantitative evaluation should be based on the interdisciplinary knowledge system basis, therefore, this article depends on public management theory, management science and engineering theory, statistics and so on, drawing Quantitative assessment experience from abroad, following the logic of evolution of quantitative assessment, based on combining theory with practice, empirical analysis and normative analysis, induction and education ,qualitative and quantitative analysis, to research the intrinsic logic of organization performance and explore the new system of quantitative evaluation . The paper first elaborates and explains quantitative analysis of organization performance, then, based on value orientation of public organizations and data envelopment analysis (DEA model), construct index system of government performance .On this basis, the paper mainly gives some more objective evaluation from the relationship between DEA effectiveness and government performance of some cities in Shandong province.
Theoretical Investigation and Analysis of Solar Thermoelectric Air Conditioning
Authors: Qi Zhao Hui , Xu Ling Yan , Sun Bao Hong
Published: September 2011

For the purpose of energy utilization and environmental protection, a solar thermoelectric air conditioning is designed which is different from traditional air conditioning. It has many advantages including environment friendly, refrigerating quickly and applying flexibly. Solar thermoelectric air conditioning utilizes thermoelectric effect of semiconductor materials to achieve the purpose of refrigerating and heating. The direct current which flows into semiconductor materials is provided by solar photovoltaic device. This paper demonstrates the main factors which influence thermoelectric air conditioning such as thermoelectric materials, air supply and heat transfer temperature difference, solar photoelectric devices and so on. In addition, comprehensive analysis of the refrigeration coefficientis obtained. Finally, the paper puts forward measures for improving the efficiency of thermoelectric air conditioning so as to study in the future.
Study on Body Foundation of Brassiere Steel Ring Shapes
Authors: Liang Su Zhen
Published: September 2011

The pattern design of brassieres is the core technology for the design and manufacture of brassieres, while the female breast shape and part dimensions are the foundations for pattern design of brassieres. Based upon 3D body scanning, this paper studied the relationship between the breast root shape and the steel ring by considering the features of the pattern design of the brassiere. It concludes that the breast root girth is a complicated three-dimensional curve; it’s inappropriate for the neighboring size’s brassieres to adopt the steel ring with the same specification; the material design of the steel ring should be moderate. The purpose is to provide human body basis for pattern design of brassieres and achieve more standard and scientific pattern design of the brassiere by the underwear enterprises.
Study on the Mechanical Properties of Jute/Carbon Hybrid Composites
Authors: Wang Jian Ming , Zhao Lei , Qin Xiao
Published: September 2011

Carbon fibers were used to lay lengthways into three lays in jute fiber needled mat and the same fiber volume content of jute fiber needled mat were fabricated. Those two mats and the lengthways carbon fibers reinforced vinyl resin composites were made by VARTM. We made a comparison of the hybrid reinforced composites between the test value and the theoretical value which was predicted by establishing tensile and bending math-model and their mechanical properties were analyzed. The results show that there was a certain line between the theoretical value and the test value of the hybrid composites, so we can establish the mixing ratio between jute fiber and carbon fiber during the engineering application. Although the use of carbon fibers had greatly enhanced the tensile properties of hybrid composite, whose tensile strength and tensile modulus increased by 85.94% and 30.99% respectively than that without carbons, the bending model can’t be changed a lot.
Statistical Property of Ideal Drafting Sliver
Authors: Su Yu Heng , Zou Wen Lin , Yan Guang Song
Published: September 2011

Given the fiber length distribution, the strand in back roller nip is generated by the stochastic method and the virtual ideal drafting process is achieved by computer program. Two different ideal slivers are simulated according to the ideal drafting virtual process, and the statistical properties of the ideal sliver are discussed. The hypothesis test method is used to judge the distribution of the number of fiber in the cross section of silver. The result indicates that the CV of the ideal drafting slivers are near the value of Martindale’s limit evenness, the number of fibers in the silver cross section follows the Poisson distribution when all fibers are identical in length and the variant of that number in fiber sliver follows the Normal distribution, where the second point puts forward the challenge to the traditional theory.
Tensile Properties Study of Polyester/Cotton/Silk Tri-Component Sirofil Composite Yarn
Authors: Lv Li Bin , Du Mei
Published: September 2011

The tensile properties of tri-component Sirofil composite yarn is analyzed. To characterize the stretchability of the composite yarn, a three-element model with little distortion has been established. It is concluded that the elasticity modulus can be improved when three single yarns with different modulus of elasticity are composited. Under this condition, the modulus of elasticity of the composite yarn is among the three. Furthermore, in order to describe the elongation of the composite yarn at break, a four-component dynamic model of drawing with large distortion is developed. And the results obtained are verified by non-linear regression analysis. It is demonstrated that the properties of non-linear visco-elasticity of sirofil composite yarn can be characterized by using multinomial and the curve plotted according to the experimental result is basically in agreement with that deduced by the theoretical model.
Evolutionary Engineering of Bacillus for Terephthalic Acid Degradation
Authors: Gong Ji Xian , Li Zheng , Li Qiu Jin , Zhang Jian Fei
Published: September 2011

Evolutionary engineering is a novel whole-genome wide engineering strategy inspired by natural evolution for strain improvement. Terephthalic acid (TA) is the most important starting material for making synthetic products, especially polyester fiber and plastics. Both TA and its manufacturing wastewater show acute, chronic and molecular toxicity to organisms. In textiles manufacturing, alkali de-weighting finishing of polyester fabrics was a main resource for producing waster water containing TA. Microorganisms can hardly adapt to the high pH caused by the alkali in wastewater of alkali de-weighting process. Although the strain for TA biodegradation already have been isolated, it is necessary to develop new innovative methods of treating TA in alkali de-weighting wastewater effectively. In this investigation, evolutionary engineering was applied to improve the characterization of Bacillus strain and the high pH resistance phenotypes were obtained. The approach of selection procedure presented in this investigation may provide an attractive promising alternative for improvement of pH resistance strain.
Preparation of Chitosan/Acacia Microcapsule Facilitating Photo-Catalytic Degradation of Polypropylene Nonwovens
Authors: Wang Xiao Mei , Zhang Cheng Rong
Published: September 2011

Since the “plastic limit order” was released, shopping bags made of polypropylene spun-bonded nonwovens have been wildly used in daily life for their portability and recyclability. However, polypropylene materials are difficult to be degraded in natural conditions, thus they are not the “real” environmental protection bags. Many studies demonstrate that TiO2 has obvious effects on raising nonwovens’ photo-catalytic degradation rate. In this study, the microcapsules were prepared with complex coacervation method using chitosan and acacia as wall and TiO2 as core material. In addition, the main process parameters including the concentration of chitosan, PH of the coacervation solution and stirring speed, which have effects on the microcapsule formation behavior were discussed specially. The results show that the good microcapsules were produced at the condition of the chitosan concentration of 0.4%, the PH valued about 3.18, stirring speed of 300r/min, temperature of the coacervation 60°Cand the condensation reaction time for 15 minutes.
Study on Numetrical Representation of Topological Architecture of 3D Woven Composites
Authors: Wang Shan Li , Yang Lian He
Published: September 2011

The numetrical representation of yarn structure of reinforcing material has become a precondition in designing architecture and predicting properties of 3D woven composites. The numetrical representation of topological architecture of woven is discussed in this paper. Yarns are sub-classified and according to the warp yarns fabric directions. A key control point method was proposed to solve the descriptive issue of arbitrary 3D woven composite architecture . In the end, the contrastive tests are done to verify the method.
Thermal Comfort Properties of Knitted Fabrics Suitable for Skin Layer of Protective Clothing Worn in Extreme Hot Conditions
Authors: Nawaz Nazia , Troynikov Olga , Watson Chris
Published: September 2011

Key words: Physiological comfort, knitted fabrics, protective clothing Abstract. Thermal comfort of clothing is associated with the thermal balance between human body and the environment, and also a balance between the body heat production and the heat loss. During work activities performed in extreme hot conditions, the body produces substantial amount of heat energy which leads to raised body temperature. As a result the body perspires in liquid and vapour form to reduce the increased temperature. When this perspiration is transmitted to the atmosphere, the body temperature reduces. Thus the garments worn next to skin should allow the perspiration and heat to easily pass through them; otherwise the result will be a significant discomfort of the persons working in extreme hot conditions. Therefore, thermal properties and water vapour permeability of the fabrics used for the next-to-skin layer of protective clothing are very important for the maintenance of physiological comfort of workers. In the present study physical parameters, air permeability, porosity, thermal and water vapour permeability of six commercially available knitted fabrics of different fibre blends, different and knitted structures suitable for skin layer garments of protective clothing worn in extreme hot conditions were evaluated. The influences of fabric physical parameters, and optical porosity on thermal conductivity and water vapour permeability of fabrics were determined and correlation coefficients were calculated between these variables.
Cell Immobilization with Textile Carriers for TA Biodegradation
Authors: Li Hui Qin , Gong Ji Xian , Li Qiu Jin , Li Zheng , Zhang Jian Fei , Chen Ke Ning , Tang Zhu Xian , Ding Guo Qiang , Lin Sheng Yuan
Published: September 2011

Fabrics provide an attractive alternative for cell immobilization carrier. In this study, the relationship of weave structure of fabrics and the effects of cell immobilization was investigated. Several kinds of fabrics with different weave structure were designed and produced acting as cell immobilization carrier. Adsorptive capacity of the textile carriers with different weave structure was measured and the biodegradation rate of TA by cells absorbed on textile carriers was also investigated. It is showed that adsorptive capacity and stability was significantly affected by weave structure of fabric carriers. The result also indicated that the ability to TA degradation was also improved by cell immobilization.
Annealing Treatment of the SnO2 Thin Film Prepared by Sol-Gel Method
Authors: Xiao Qi , Wang Rui , Xu Lei
Published: September 2011

SnO2 thin film on the glass fiber was prepared by the ethanol solvent and crystalline tin chloride based Sol-gel method, including the process of solution preparation, fiber dip-immersing, gel reaction and annealing. The sol was prepared by alcoholysis reaction of 0.9mol/l chloride- ethanol solvent under 80°C. A thin film of sol was prepared by dip-immersing process, then a post annealing process with various temperatures and time was adopted to form a stable crystallized film on the surface of the glass fiber. X-ray diffraction, scanning electron microscope (SEM) and fiber electric resistance measurement were utilized to characterize the transmittance and resistivity of the thin film With the rising of annealing temperature, the transmittance of the thin film was firstly increased and then decreased while the resistivity changed adversely. At last, an optimized annealing process with 550°C and 3h was chosen.
Weaving 3D Fabric with a “中” Shaped Cross-Section
Authors: Chang Yu Tao , Qian Xiao Ming , Liu Hai Wen , Liu Hua Wu
Published: September 2011

3D woven fabric significantly improves the mechanical properties, especially the strength resulting from the between layers connections of yarns Hence, 3D woven fabrics have been widely used as reinforcing material in prefabricated composites, A particular 3D woven fabric with “中” shaped cross section was developed in this study .The fabric was made in a plane loom weaving machine. The designing procedure and processing methods are given in details.
Predicting Yarn Unevenness Using Improved BP Neural Network
Authors: Li Hui Jun , Wang Xin Hou
Published: September 2011

The objective of this research is to predict yarn unevenness. The model of predicting yarn unevenness is built based on improved BP neural network. The improved BP neural networks are trained with HVI test results of cotton and USTER TENSOJET 5-S400 test results of yarn. The results show prediction models based on improved BP neural network are very precise and efficient.
Stability of Salvia miltiorrhiza Bge Extract and its Application on Silk
Authors: Sun Sha Sha , Wang Jie Jie , Tang Ren Cheng
Published: September 2011

The stability of Salvia miltiorrhiza Bge (SMB) extract and its dyeing and ultraviolet protective properties on silk were investigated. The results indicated that SMB extract was stable at acidic conditions and stable to heat and ultraviolet light. The building-up and UV-protective properties of SMB extract for silk were good and can be enhanced by mordanting with ferrous and ferric sulfate and copper sulfate. The light fastness rating was improved using ferric sulfate, while the washing and light fastness properties were worsen using ferrous sulfate.
Dyeing Analysis of Jade Polyester Fiber Knitted Fabric
Authors: Hu Hai Xia
Published: September 2011

This study analyzes the principle of dispersal dyeing on jade polyester fiber knitted fabric, and confirms the suitable dyeing technology on jade polyester fiber knitted fabric. By testing the color fastness to washing, color fastness to rubbing and color fastness to perspiration, the results show good. So it indicates that this dyeing process is very suit for the jade polyester fiber knitted fabric.
A Stochastic Simulation of Cotton Combing Process
Authors: Yan Guang Song , Su Yu Heng , Yu Chong Wen
Published: September 2011

The properties of plain fiber assembly are discussed, and the fiber alignment in the assembly is investigated. Some theories in yarn irregularity research are applied to the study of the random and parallel fibers in fiber assembly and a stochastic method is used to generate the fiber assembly. For a given fiber length distribution, the combing process is simulated on the basis of the plain fiber assembly. If the main parameters in cotton combing are known, the simulation can be conducted, yielding the fiber length distributions in combed cotton slivers and in waste cotton that is combed down. With the variation of combing parameters, the influence of combing parameters on the combing results can be discussed from the simulation.
Research on the Application of G7 in the Gravure Printing Products
Authors: Guo Ling Hua , Zhang Mei Yun , Guo Xin Hua
Published: September 2011

The heat transfer printing is a new application in the textile industry. Gravure printing is the most common method in the heat transfer printing. The Gravure printing qualities of the paper play a decisive role in the textiles. GRACoL7 breaks with tradition by raising gray balance to a more important status to realize the different printing materials with the same appearance. GRACoL 7 process is accorded with human observation rule .In this paper, We introduce the process, the principle and the parameters of G7 .The purpose was to provide reference for printing industry.
Effect of Preparation Parameters of Titania Sol on Textile UV-Resistance
Authors: Wang Ran , Chen Ying , Wang Jia , Yang Yue
Published: September 2011

Titania nanosols were prepared by a sol-gel method using tetrabutyl titanate (TTB) as precursors. Effects of the content of chelator, water, catalyst, and reaction time on the ultraviolet -resistant property of textile were investigated. An orthogonal experiment was conducted for the optimization preparation. The ultraviolet protection factor (UPF) value of fabrics increased with the enhancement of the TTB content; however, reaction time had limited influence on the UPF. When chelator, water, and catalyst contents were 5.5, 90, and 5.5% (w/w) (in solution B), respectively, the preparation was optimal, and the UPF value of fabric reached 60.
Anti-Bacterial Property of Tussah Silk Fabric by Nano-Titanium Dioxide and Chitosan Modification
Authors: Lu Yan Hua , Liu Zhi Mei
Published: September 2011

In order to increase the anti-bacterail property of tussah silk fabric, a nano-material dispersion system contained titanium dioxide nano-particles, chitosan, 1,2,3,4-butane tetracarboxylic acid, sodium monophosphate and surfactants was prepared. The particles in the dispersion solution have a narrow particle size distribution with average particle diameter of approximately 40 nm. Tussah silk fabric was then modified with the dispersion system using a conventional pad-dry-cure method. The structure of the modified tussah silk was characterized by X-ray photoelectron spectroscopy (XPS). The anti-bacterial efficiency of the treated tussah silk fabric with the dispersion system at a concentration of 0.2% nano-titanium dioxide and 0.5% chitosan showed over 99% of bacterial reduction against the Staphylococcus aureus（S. aureus） and gram-negative bacterium Escherichia Coli (E. Coli). In addition, the anti-bacterial reduction was maintained over 90% even after being exposed to 20 consecutive launderings.
Study on the Dyeing of PET Fiber with Disperse Dyes in D5 Media
Authors: Li Shen Zheng , Liu Jin Qiang , Li Yong Qiang , Li Li Ming
Published: September 2011

This experiment selected a new kind of environmental media (D5) instead of using water on the dyeing of PET, this work provided a new method for non-aqueous dyeing. The effects of the water addition, temperature, dyeing time and reagents on adsorption amount of disperse dye were studied, one good dyeing process is, adding 0.5mL water and 0.3mL ethanol into 20mL D5 system, the temperature of dyeing was 130°C, the preservation time of dyeing was 60min.
Moderate Hydrolysis of Nylon 6 Fabric with Different Acids
Authors: Wang Xue Chuan , Wang Pei Yi , Ren Long Fang , Qiang Tao Tao
Published: September 2011

The aim of this work was to investigate the changes induced on nylon 6 ﬁbers after moderate treated with formic acid and sulfuric acid. The dyeing properties of nylon 6 ﬁbers after moderate acid treatment with reactive dye were measured. The content of amino groups, moisture absorption and contact angle of non-treated and moderate acid treated nylon 6 fabrics were determined and the effects of acid treatment on the structure, thermo-stability and morphology of nylon 6 fibers were investigated by FT-IR, SEM and DSC. The results indicate that the content of amino groups, moisture absorption and hydrophilicity of the fabrics enhanced and the dyeability improved after moderate acid treatment.
Uniformity and Penetration of Surface Modification Effects of Atmospheric Pressure Plasma Jet into Textile Materials
Authors: Wang Chun Xia , Du Mei , Qiu Yi Ping
Published: September 2011

The objective of this study was to investigate the uniformity and penetration of surface modification into textile materials including fiber, yarn and fabric treated by atmospheric pressure plasma jet (APPJ). Exposure to helium/oxygen plasma at atmospheric pressure made improvement in the wettability, dyeability, adhesion of single fiber, yarn and woven fabric. The results showed that such a plasma jet was possible and effective in penetration of surface modification into textile structure. It can treat the whole surfaces of a single fiber, yarn filament in the treated parallel filament tow uniformly. For porous fabrics, rapid and efficient treatment on both sides of the treated samples was found to be ensured. And the degree and depth of penetration depended on the penetration of active species in plasma jet, which was affected by plasma parameters and materials structure. The former included treatment time, power, gas temperature, jet-to-substrate distance. The latter included number of twisting and fabric pore size. These findings would have important effects on industrialization of textiles treated by atmospheric pressure plasma jet.
Study on Reuse of Dyes from Wastewater
Authors: Li Mei Zhen , An Jin
Published: September 2011

Through putting protein additives in reactive dyes wastewater and decolorization, both of the additives and dye wastewater changed into a kind of complex compound. Protein additives with amorphous loose micelle structure which has -NH2, -COOH, -OH and -CONH- produce electrostatic attraction, hydrogen bonding, van der Waals force and hydrophobic interaction between dye ions and dye molecules. Thereby, absorptive dye can embed dyes in micelles by adsorption, flocculation, coagulation to achieve the collecting of dye in dye wastewater. In this paper, we mainly discussed the performance and reuse of decolorized dyes. Further we studied on the reuse of the protein blends dye and the use of WLS for cotton fabrics pretreatment. By researching on the influence of WLS amount, optimal process conditions including pretreatment, dyeing, were both determined. The effect of WLS modification was also evaluated. It was found that the dyeing rate in decolorized dye increased after cotton was modified by WLS. Therefore, it is necessary to explore the decolorization of reactive dyes wastewater and the reuse in order to save dyes, chemicals and reduce emission.
The Impact of Weft Quality on Air-Jet Loom Weaving Efficiency
Authors: Cui Hong Jun , Lin Jian Ping , Li Li Jun
Published: September 2011

The economic benefits of weaving production are mainly reflected in the yield of loom, whereas the loom weaving efficiency is the main decisive factor of high yield. In the production of air-jet loom weaving production, fault shutdown is the major factor impacting the weaving efficiency. Therefore, this paper carries out analysis on the quality of yarn of air-jet loom in actual production and discusses the impact of weft quality on fault shutdown of air-jet loom, so as to provide basis for the improvement of loom weaving efficiency, giving full play to the efficient weaving of air-jet loom and generating better economic benefits. The study shows that: yarn quality is the major factor influencing air-jet loom weaving efficiency, and the impact of weft quality is greater than that of warp; hence, weft quality improvement is the main way to improve air-jet loom weaving efficiency.
Comparative Study on Vibratory Stress Relief (VSR) and Thermal Stress Relief (TSR) of Cylinder Wallboard
Authors: Dong Xue Wu , Zhao Xi Ping , Yu Song Qing , Zhou Xiao Wen , Ren Dai , Zhai Ya Fei
Published: September 2011

Dimensional stability of carding machine has a greater impact on the performance of the Cylinder wallboard. Compared with the thermal stress relief (TSR), the vibratory stress relief (VSR) is a new technology which may eliminate the residual stress in metal components with high efficiency, energy saving, environmental protection and low cost. We have 8 pieces of cylinder wallboard castings with every 4 pieces as a group. It takes 20 minutes to do VSR in one of the groups and 20 hours for TSR in another group. Three identical size accuracy indexes are measured, respectively at intervals of 1 month 2 months after aging treatment. The results show that: the dimensional stability of cylinder wallboard vibration by VSR is better than the one by TSR. Energy consumption and cost-saving is more than 90% without "three wastes" emissions.
Study on New Drafting Form of Comber
Authors: Li Xin Rong , Jiang Xiu Ming , Yang Jian Cheng
Published: September 2011

With analysis of development tendency of domestic and abroad high-speed combers, in this paper we proposed a new drafting form to comber--three over three curvilinear draft under pressure bar combining with development and successful experience for high-speed drawing frame. Moreover, combing experiment in this new drafting form was performed on basis of theoretical analysis and calculation. The results showed that this new type of drafting form satisfied the users’ demand for high-speed as well as the comber’s qualification.
Circular Nets Printing Machine Synchronicity System Based on Intelligent PI Controller
Authors: Gao Xiao Ding , Wang Gang , Nie Zhao Ming
Published: September 2011

The Circular nets printing machine synchronicity system based on intelligent PI controller has been designed. The intelligent PI controller can adjust its structure and parameters online, which can remarkably improve dynamic performance of the system. Comparing with common PI control system, it successfully solves the contradiction between quickness and smoothness. The synchronous operation system operation testing results indicate that the biggest error of synchronicity is less than δ=5r／min. It can completely meet the technological requirements of circular nets printing machine.
The Research of Two-for-One Twisting Spinning Frame
Authors: Ren Xue Qin , Li Wen Ya , Shen Xiao Fei
Published: September 2011

Now many enterprises have used the two-for-one twister to replace the ring spinning frames, in accordance with the same principle, the enterprises will use two-for-one twisting spinning frames instead of ring spinning frames in the future.Compared with the ring spinning frame, the obvious advangtages of the two-for-one twisting spinning frame are as follows: the production efficiency is improved,which can reach the aim to get the higher single spindle production with the lower speed; The two-for-one twisting spinning frame is a machine that can spin and wind to cheese with larger capacity.The package form in this new machine is the cheese instead of the ring cop, so the automatic winding frame is saved, which not only improve the production efficiency and make the spinning process easier,but also improve the single yarn quality[1]. Additionally this machine can be used in this way: the output from the front roller would be introduced from the side of the spindle, the filaments /the rovings /the strands can be introduced through the bottom of the spindle at the same time, then they are twisted for two different effects and spun for special fancy yarn.