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Crealet presents its innovative warp tension solutions at Techtextil 2024

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China Textile 2024年第2期 43-43页

Crealet is the world leader in sophisticated warp feeding technology and tailored solutions.Controlled warp tension stands also for controlled fabric quality.The Swiss firm presents its latest developments for technic... 详细信息

关键词： tension warp Germany

基于代数结构视角对轻量分组密码warp的积分分析

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计算机研究与发展 2023年第4期60卷 860-872页

作者：邢朝辉张文英曹梅春山东师范大学信息科学与工程学院济南250358 山东交通学院理学院济南250357 山东管理学院信息工程学院济南250357

在融合了物联网、5G网络等新一代信息技术的工业互联网中,底层终端设备产生海量数据.数据安全传输的需求使得针对资源受限环境所设计的轻量级密码得到广泛应用.对新提出的轻量级密码进行安全性评估对于保障工业互联网的安全运行至关重要... 详细信息

在融合了物联网、5G网络等新一代信息技术的工业互联网中,底层终端设备产生海量数据.数据安全传输的需求使得针对资源受限环境所设计的轻量级密码得到广泛应用.对新提出的轻量级密码进行安全性评估对于保障工业互联网的安全运行至关重要.发现了某种特定结构加密算法基于多变量多项式的积分性质,利用该性质得到了更长积分区分器,改进了基于代数结构的分析方法.提出了基于代数结构构造SPN(substitution permutation network)和Feistel-SP结构分组密码积分区分器的框架,并将其应用于SAC 2020会议上提出的轻量分组密码warp的分析上,构造了2个复杂度为2^(116)的22轮积分区分器,比设计者给出的区分器多了2轮,并且复杂度更低.利用该积分区分器,实现26轮密钥恢复攻击,比设计者给出的密钥恢复攻击增加了5轮,这是目前在单密钥情境下对warp最好的攻击结果.此外,还对18轮积分区分器进行了实验验证,运算复杂度为2^(32).

关键词：代数结构积分区分器积分攻击 Feistel-SP分组密码 warp

基于国五Ⅰ型测试的warp Air Clean装置对汽油车尾气减排效果研究

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环境污染与防治 2022年第12期44卷 1567-1572页

作者：邹振东余雷雨丁金山刘锦慧林倩云鄢春华黄婉彬邱国玉北京大学深圳研究生院环境与能源学院广东深圳518055

汽车尾气排放是空气污染最主要的来源之一,已有技术以机内净化技术和机外净化技术为主,少有关注如何从发动机前端入手减少汽车尾气污染物排放。warp Air Clean(WAC)装置可以通过静电作用改善发动机进气质量,优化发动机燃烧过程,因此基... 详细信息

汽车尾气排放是空气污染最主要的来源之一,已有技术以机内净化技术和机外净化技术为主,少有关注如何从发动机前端入手减少汽车尾气污染物排放。warp Air Clean(WAC)装置可以通过静电作用改善发动机进气质量,优化发动机燃烧过程,因此基于国五Ⅰ型测试进行了WAC装置减排效果研究。结果表明:(1)WAC装置对汽油车尾气排放的总碳氢化合物(THC)、CO、氮氧化物(NO_(x))、颗粒物(PM)、CH_(4)和非甲烷总烃(NMHC)都有着较好的减排效果;(2)总体而言,WAC装置对汽油车旧车的减排效果优于新车;(3)对汽油车THC、CH_(4)和NMHC的市区工况减排效果优于市郊工况,而对CO和NO_(x)的市郊工况减排效果优于市区工况;(4)对不超过九座的载客车辆的减排效果优于最大设计总质量不超过3500 kg的载货车辆。

关键词： warp Air Clean装置汽油车尾气减排国五Ⅰ型测试

Performance of Flexible warp Knitting Metal Mesh with Notch

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Journal of Donghua University(English Edition) 2014年第5期31卷 582-588页

作者： SHAO Guang-wei JIANG Jin-hua PAN Qiao-ling LIU Yuan-yuan CHEN Nan-liang College of Textiles Donghua University Shanghai 201620 China Engineering Research Center of Technical Textiles Ministry of Education Donghua University Shanghai 201620 China Research Institute of Donghua University Shanghai 201620 China

Three different kinds of notch involving single edge notch （ SEN）, double edge notch （ DEN ） and central notch （ CEN ） were preset in flexible warp knitting metal mesh, and the tensile properties of notch samples were tested. Three kinds of notch samples＇ sensitivity were investigated through different notch lengths. Then failure process and tensile properties were contrasted and analyzed between intact and notch samples. Experiment and analysis results showed that positive Poisson＇s ratio effect gave rise to obvious waist binding and special inverted triangle loading area. All samples were sensitive to three kinds of notches. And notch sensitivity was closely related to notch form and notch length. The notch procession obviously deteriorated the mechanical properties of flexible warp knitting metal mesh. Sample with different notch lengths and breakage locations determined different tensile strengths that sample could bear. The fitting function of waist binding track satisfied the parabolic equation.

关键词： warp knitting metal mesh notch sensitivity tensilestrength preset notch stainless steel wire

SYNTHESIS AND SIZING PROPERTIES OF GRAFT STARCHES AS warp SIZING MATERIALS FOR POLYESTER/COTTON BLEND SPUN YARN

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Journal of China Textile University(English Edition) 1994年第1期11卷 22-30页

作者：祝志峰周永元张文赓 China Textile Univ Shanghai China

Grafting a number of monomers such as acrylic acid, acrylamide, methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, butyl methacrylate and vinyl acetate onto granular corn starch was carried out respectively in aqueous dispersion by using cerie ammonium nitrate as an initiator under nitrogen atmosphere. Conversion of monomer, grafting ratio and grafting efficiency were measured by the method of combining the chemical quantitative analysis with the weight. The adhesive power of the starch graft copolymers to polyester/cotton fiber was evaluated by measuring the breaking strength and elongation of the roving impregnated with the paste. The viscosity change of the size paste before and after grafting was studied. The mechanical properties of polyester/cotton fibre yarn sized by the graft starch were tested. The main conclusions are as follows: (1) monomers which were graft coplymerized onto starch have a significant influence upon the viscosity of the size paste; (2) the adhesive power

关键词： Starch Graft warp size Sizing Modification

Computer-aided Pattern Design of Multi-bar warp Knitted Fabrics

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Journal of China Textile University(English Edition) 2000年第1期17卷 85-87页

作者：李炜

To meet the development trend of multi-bar warp knit-ting machine towards high-speed,advanced technologyand computer control and the requirements of variousproducts with small quantity,there are many researcheson the computer-aided pattern design of multi-barwarp knitted fabrics.In terms of the special propertiesof the computer-aided pattern design of multi-barwarp knitted fabrics,the Object Oriented Program(OOP)programming-Object Windows class Library(OWL)programming is selected.According to thecharacters of the OWL programming,various functionsare defined.Pattern design and technical parameters canbe output,which offers a great convenience for the fac-tory.

关键词： multi - bar warp knitted fabric computer -aided pattern design pattern Object Windows class Library (OWL) programming.

Effect of Run - in Ratios on the Mechanical Properties of Two - Guide Bars warp - Knitted Fabrics

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Journal of China Textile University(English Edition) 2000年第3期17卷 87-89页

作者：陈雨梁 Coll. of Textiles China Textile Univ. Shanghai 200051 China

warp knitting technology gets rapid development at present and becomes one of the most important parts of the textiles.But it is less known how the parameters of warp knitting technology affect the mechanical properties of warp-knitted fabrics.This paper presents discuss a research on the relationships between run-in ratio and mechanical properties of the two-bar warp-knittedfabrics through the measurement and analysis of the mechanical properties of various samples with different run-in ratios.The optimal run一in ratios for the reasonable mechanical properties are obtained from above dis-

关键词： run - in ratios mechanical property two - bar warp - knitted fabric .

Application of Bi-axial warp Knitted Structures in Concrete Constructions

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Journal of Donghua University(English Edition) 2001年第1期18卷 101-103页

作者： Li Wei(李炜) Chen Nanliang(陈南梁) College of Textiles Dong Hua University Shanghai 200051 College of Textiles Dong Hua University Shanghai 200051

The warp knitted bi-axial directionally oriented structure (D. O. S. ) reinforcement substrates applied to building construction are discussed in comparison to woven fabrics. One of usage barriers of reinforced cement with gloss-grid is its sensitivity to alkali existed in the cement which will lead to the reduction of its service-life. The tests show that the treatment by sol-gel method to protect the composite from alkali corrosion is effective. Then two formulae of sol-gel solution are also recommended here for application.

关键词： warp knitted grid, glass fiber, polyester, sol-gel method, coat, cement.

Manufacture of Single Cotton Fabric with New Composition, Specified Bend from Yarn Gathered from Local Raw Material Cotton Fiber

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Journal of Textile Science and Technology 2023年第4期9卷 244-252页

作者： Dilshodbek Olimjonov Khasanboy Ugli Mirxojayev Mirjamol Mirkarimovich Department of Knitting Technology Namangan Institute of Textile Industry Namangan Uzbekistan

The article created 21 types of fabrics for the new composition of dublerin. Tests of various types of weave, fiber composition and yarn count are shown in various ways. The physical and mechanical parameters of the test samples were determined and analyzed at the “Accredited Testing Laboratory for Light Industry Products” at the State Unitary Enterprise “Namangan Center for Testing and Certification”. The reason for such a low performance of the motos of number 15 produced in the scientific research work is that the linear densities of the body and the yarn are four times different, despite the weaving of the fabric. Elongation at break is also dependent on penetration.

关键词： Weaves warp Weft Dublerin Canvas Reps Surface Density Fabric