This paper is to report a prediction model for thermal protective performance of multilayer fabrics based on Matlab neural network toolbox. Then a back propagation (BP) neural network model is developed to predict the...This paper is to report a prediction model for thermal protective performance of multilayer fabrics based on Matlab neural network toolbox. Then a back propagation (BP) neural network model is developed to predict thermal protective performance of multilayer fabrics for firefighters. The network consists of twelve input nodes, six hidden nodes, and one output node. The inputs are weight, thickness, density of warp and weft, limited oxygen index (LOI), and heat conductivity of each-layer fabric. Thermal protective performance (TPP) rating of multilayer fabrics is the output. In this paper, the data from the experiments are used as learning information for the neural network to develop a reliable prediction model. Finnally the model performance is verified, and the proposed model can be applied to predict the thermal protective performance of multilayer fabrics for firefighters.展开更多
The bench top test is one of the most important and effective methods to evaluate the total thermal protective performance(TPP) of firefighters' protective clothing,which is greatly influenced by the air gaps entr...The bench top test is one of the most important and effective methods to evaluate the total thermal protective performance(TPP) of firefighters' protective clothing,which is greatly influenced by the air gaps entrapped.In this paper,to investigate the effect of air gap width on TPP,a new improved apparatus with two height changeable buttons to hold the thermal sensor was developed to get a series of air gap sizes from 0 mm to 40 mm.The TPP of two types of flame-resistant outer fabrics was measured with TPP test apparatus respectively.Analysis of temperature rise with each air gap width was made to determine the effects of different air gaps on protective performance.It was indicated that air gap size had great effect on TPP of fabrics in the bench top test.An air gap width above 8 mm was suggested for the thermal protective clothing design.展开更多
为了解消防服研究进展、预测未来发展趋势,利用CiteSpace信息可视化软件对Web of Science数据库中1991-2018年的550篇有关消防服研究的论文进行数据可视化处理。从文献计量学的角度,对消防服研究的国家、机构合作网络、共引文献、研究...为了解消防服研究进展、预测未来发展趋势,利用CiteSpace信息可视化软件对Web of Science数据库中1991-2018年的550篇有关消防服研究的论文进行数据可视化处理。从文献计量学的角度,对消防服研究的国家、机构合作网络、共引文献、研究热点和前沿等信息的可视化图谱进行分析。结果显示,针对消防服最主要的研究方向为材料科学,来源期刊涉及纺织材料、人体工程学等领域;物质传递、热应力、冷却装置研究是最活跃的三个主题。未来的研究方向将会涉及采用新兴科技开发适用于消防服的功能性面料,以及运用通风散热手段以降低热应激等方面。展开更多
文摘This paper is to report a prediction model for thermal protective performance of multilayer fabrics based on Matlab neural network toolbox. Then a back propagation (BP) neural network model is developed to predict thermal protective performance of multilayer fabrics for firefighters. The network consists of twelve input nodes, six hidden nodes, and one output node. The inputs are weight, thickness, density of warp and weft, limited oxygen index (LOI), and heat conductivity of each-layer fabric. Thermal protective performance (TPP) rating of multilayer fabrics is the output. In this paper, the data from the experiments are used as learning information for the neural network to develop a reliable prediction model. Finnally the model performance is verified, and the proposed model can be applied to predict the thermal protective performance of multilayer fabrics for firefighters.
基金National Natural Science Foundation of China (No. 50876019)the Research Fund for the Doctoral Program of Higher Education of China (No. 200802550009)Fundamental Research Funds for the Central Universities,China
文摘The bench top test is one of the most important and effective methods to evaluate the total thermal protective performance(TPP) of firefighters' protective clothing,which is greatly influenced by the air gaps entrapped.In this paper,to investigate the effect of air gap width on TPP,a new improved apparatus with two height changeable buttons to hold the thermal sensor was developed to get a series of air gap sizes from 0 mm to 40 mm.The TPP of two types of flame-resistant outer fabrics was measured with TPP test apparatus respectively.Analysis of temperature rise with each air gap width was made to determine the effects of different air gaps on protective performance.It was indicated that air gap size had great effect on TPP of fabrics in the bench top test.An air gap width above 8 mm was suggested for the thermal protective clothing design.
文摘为了解消防服研究进展、预测未来发展趋势,利用CiteSpace信息可视化软件对Web of Science数据库中1991-2018年的550篇有关消防服研究的论文进行数据可视化处理。从文献计量学的角度,对消防服研究的国家、机构合作网络、共引文献、研究热点和前沿等信息的可视化图谱进行分析。结果显示,针对消防服最主要的研究方向为材料科学,来源期刊涉及纺织材料、人体工程学等领域;物质传递、热应力、冷却装置研究是最活跃的三个主题。未来的研究方向将会涉及采用新兴科技开发适用于消防服的功能性面料,以及运用通风散热手段以降低热应激等方面。
