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首页> 外文期刊>The Journal of the Textile Institute >Predicting tensile strength of fabrics used in firefighters'protective clothing after multiple radiation exposures
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Predicting tensile strength of fabrics used in firefighters'protective clothing after multiple radiation exposures

机译：预测暴露于多次辐射下的消防员防护服所用织物的拉伸强度

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摘要

During daily training, in-site firefighting and emergency rescue, firefighters often encountered multiple exposures to various thermal hazards. In this study, the tensile strengths of three typical fabrics used in firefighters' protective clothing after exposure to multiple radiations were investigated. Radiant heat flux of 21 kW/m(2) was simulated by a radiant protective performance tester. Totally 12 scenarios with different exposure frequencies and durations were selected. The results showed that the tensile strength of fabric decreased after different radiation exposures. The exposure frequency, individual duration and cumulative exposure duration had impact on the tensile strength. The tensile strength decreased with the increasing of exposure frequency with the same individual duration. While keeping the same cumulative exposure duration, the longer individual exposure duration resulted in lower tensile strength. Empirical equations were developed to predict the lifetime of firefighters' protective clothing. It can be concluded that the effects of radiation exposure frequency and individual duration on the tensile strength of firefighters' protective clothing should be considered during protective clothing selection and maintenance.
机译：在日常训练，现场消防和紧急救援中，消防员经常会多次暴露于各种热危害中。在这项研究中，研究了消防员防护服中暴露于多种辐射后的三种典型织物的拉伸强度。通过辐射防护性能测试仪模拟了21 kW / m（2）的辐射热通量。总共选择了12种具有不同暴露频率和持续时间的场景。结果表明，织物的拉伸强度在不同的辐射暴露后降低。暴露频率，个体时间和累积暴露时间对拉伸强度有影响。在相同的持续时间下，拉伸强度随暴露频率的增加而降低。在保持相同的累积暴露时间的同时，更长的个体暴露时间导致较低的拉伸强度。建立了经验公式来预测消防员防护服的寿命。可以得出结论，在防护服的选择和维护过程中，应考虑辐射暴露的频率和持续时间对消防员防护服抗张强度的影响。

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