scholarly journals Functional Investigation on Automotive Interior Materials Based on Variable Knitted Structural Parameters

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2455
Author(s):  
Mao Siyao ◽  
Su Liu ◽  
Zhang Peihua ◽  
Long Hairu

With the rapid development of technical textiles, more and more researchers have focused on developing high performance textiles to meet various needs. The automotive industry is a major market for technical textiles. Compared to other types of fabric, weft-knitted fabric has good extensibility and elasticity, as well as a hand-feel, and it is gradually becoming the preferred type of interior fabric for automobiles. This paper aims to develop an automotive fabric with good comfort and durability. Sixteen types of weft-knitted fabrics with eight different structures and two different materials (draw textured polyester and textured polyamide yarn) were fabricated using a computerized flat knitting machine. Their durability and level of comfort were examined by measuring the tensile and tear strengths, abrasion resistance and air permeability. A fuzzy comprehensive evaluation method was employed to compare the comprehensive properties of the fabric. The results indicated that the overall performance of DTPA fabric was better than DTPE fabric, and an optimum structure was selected for an automotive interior. Meanwhile, we found that the air permeability of the fabric could be increased by using tuck stitches and that the strength and dimensional stability of fabric could be increased by adding tuck stitches and weft-insert yarns. The findings contribute to the field of technical textiles and provide ideas for the development of high-performance textiles.

2019 ◽  
Vol 9 (1) ◽  
pp. 71
Author(s):  
Yonghua Wang ◽  
Guosheng Hu ◽  
Jia-xin Zhang

With the rapid development and growth of the installed capacity of wind power generation in China, more and more attention has been paid to the risk of wind farm construction projects. Based on the extension element method and the multi-level fuzzy comprehensive evaluation method, this paper makes an empirical analysis on the bidding risk of the wind farm construction project of Xintiandi energy company in Hebei province. The research shows that the extensible matter element method can provide effective support for decision makers because there are no different evaluation principles and more accurate risk evaluation.


2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Jun Liu ◽  
Baixiang Pan ◽  
Xiaheng Zhang ◽  
Doudou Li

Mobile e-commerce is e-commerce implemented on mobile devices, such as mobile phones, and mobile Internet networks as we usually understand. With the rapid development of mobile electronic devices and mobile Internet networks, this new type of e-commerce field has gradually emerged. In the context of edge computing, this paper takes mobile e-commerce information system as the research object and aims to study the mobile e-commerce information system based on industry clusters under edge computing. First of all, this paper expounds the theory of industrial clusters and the manifestations of e-commerce industrial clusters, as well as the concept and technical framework of the Internet of Things, and proposes the order relationship analysis method and the fuzzy comprehensive evaluation method, and conducts experiments in the form of questionnaires. The experimental results show that, from the perspective of industrial integration, with a correlation coefficient of 0.687, there is a significant positive correlation between e-commerce information system and supply chain cooperation.


2012 ◽  
Vol 503-504 ◽  
pp. 1020-1024
Author(s):  
Meng Meng Guo ◽  
Jia Guang Meng ◽  
Ya Hong Han

This article focuses on the performance test of coconut carbon fiber knitted fabric, like air permeability, moisture permeability, thermal insulation, fastness and deodorant, release negative ions, etc. use the fuzzy comprehensive evaluation method to analyze and evaluate the coconut carbon fiber knitted fabric.


2013 ◽  
Vol 821-822 ◽  
pp. 295-300
Author(s):  
Shan Wen ◽  
Shi Hua Luo

This paper studies the cool comfort performance of cool refreshing type fabric, starting from the fabric heat and moisture performance, style property and air permeability, using fuzzy comprehensive evaluation method, the principal component analysis and tactile methods to evaluate the fabric of the cool comfort performance, and statistical analysis of the correlation between physical indexes and cool comfort performance, get air permeability, moisture resistance, moisture rate and thermal resistance indexes can be used as the physical indexes of cool refreshing type fabric of cool comfort performance; at the same time, studies show that the test method can accurately reflect the cool refreshing type fabric of cool comfort performance is a subjective and objective evaluation method of combining.


2010 ◽  
Vol 26-28 ◽  
pp. 1004-1007
Author(s):  
Yong Hua Guan ◽  
Hai Fang Cheng ◽  
Yong Ye

Due to limited materials and energy, more attention has been paid to the adverse impacts of the global economy’s rapid development on the environment and society. The sustainable and long-term development strategy becomes extremely urgent and important for the enterprises. Manufactures and their supply chain should take measures to implement sustainable development strategy in future production. The concept of sustainability is introduced into the field of supply chain and the structure of sustainable chain is constructed in this paper. And a method of sustainable supply chain performance evaluation is proposed. It evaluates the supply chain performance in four dimensions, namely, operational, financial, social and environmental dimensions. Then a performance evaluation model of sustainable supply chain based on AHP and fuzzy comprehensive evaluation method is established. This paper gives a case to evaluate the sustainable supply chain performance with the model and implications are given finally.


2013 ◽  
Vol 791-793 ◽  
pp. 2192-2195
Author(s):  
Xiao Ji Chen ◽  
Jing Zhong Liu ◽  
Xia Peng

With the rapid development of Japan-oriented software outsourcing, the demand for talent of computer science is increasing, reasonably making evaluation of talents comprehensive skills on Japan-oriented software outsourcing is important. This paper use fuzzy comprehensive evaluation method to research. First, show the evaluation index system and the weight of references; Then, the establish mathematical models of fuzzy evaluation, including single indicators of fuzzy evaluation and fuzzy comprehensive evaluation; The results of this research have the following characteristics, comprehensive consider various factors, objectively reflect the actual situation, simply use, evaluate accurately and reasonably, and in actual application, people should use evaluation method flexibly.


2020 ◽  
Vol 39 (4) ◽  
pp. 5661-5671
Author(s):  
Cai Zhiming ◽  
Li Daming ◽  
Deng Lianbing

With the rapid development of urban construction and the further improvement of the degree of urbanization, despite the intensification of the drainage system construction, the problem of urban waterlogging is still showing an increasingly significant trend. In this paper, the authors analyze the risk evaluation of urban rainwater system waterlogging based on neural network and dynamic hydraulic model. This article introduces the concept of risk into the study of urban waterlogging problems, combines advanced computer simulation methods to simulate different conditions of rainwater systems, and conducts urban waterlogging risk assessment. Because the phenomenon of urban waterlogging is vague, it is affected by a variety of factors and requires comprehensive evaluation. Therefore, the fuzzy comprehensive evaluation method is very suitable for solving the risk evaluation problem of urban waterlogging. In order to improve the scientificity of drainage and waterlogging prevention planning, sponge cities should gradually establish rainwater impact assessment and waterlogging risk evaluation systems, comprehensively evaluate the current capacity of urban drainage and waterlogging prevention facilities and waterlogging risks, draw a map of urban rainwater and waterlogging risks, and determine the risk level. At the same time, delineate drainage and waterlogging prevention zones and risk management zones to provide effective technical support for the formulation of drainage and storm waterlogging prevention plans and emergency management.


2019 ◽  
Vol 98 ◽  
pp. 01034 ◽  
Author(s):  
Mingjun Liu ◽  
Changlai Xiao ◽  
Xiujuan Liang

In this study, a hydrochemical investigation was conducted in Shuangliao city to identify the hydrochemical characteristics and the quality of groundwater using descriptive statistics and correlation matrices. And on that basis, combined with Analytic hierarchy process (AHP), an improved two-level fuzzy comprehensive evaluation method is used to evaluate the groundwater quality. The results indicate that the major cations and anions in groundwater are Ca2+ and HCO3-, respectively. The chemical types are mainly HCO3—Ca type water, some areas are complicated due to the influence of human activities. The evaluation results show that the water quality in the area is mostly III type water, and the groundwater quality in some areas is IV or V water due to the influence of primary geological conditions or human activities. The groundwater quality in the East Liaohe River Valley and Shuangliao urban area is relatively poor, and in the northwest part which is the saline alkali soil area is also relatively poor.


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