摘要
作为消防员防坠落装备核心受力部件的消防安全绳,在使用过程中无法通过目测、触感等检查方式判断其过载、冲坠后是否产生影响绳索强度的塑性变形。采用经过氨纶长丝包缠涂敷工艺,将具有高弹性及良好的应变电感特性的拉阻式氨纶传感纱置于安全绳内部,与绳索同步受力变形,可实现应力传输。使用万能拉力测试仪和电阻采集装置对可传感消防安全绳的电阻响应性和线性度进行测试。试验结果表明,传感纱在弹性形变范围内,应力-应变-电阻信号呈线性输出。传感纱能够积极响应外加拉力载荷,线性度为0.98856。在多次拉伸循环中,传感纱稳定性好。未来可在实践中帮助消防员判定载荷情况,简化救援评估计算。
The life safety rope is the core stressed component of the fall protection equipment for fire service.But whether it has plastic deformation that affects the strength of the rope after the overload and fall cannot be judged by visual inspection,touch and other inspection methods during use.The tensile resistance spandex sensing yarn with high elasticity and good strain inductance characteristics is placed inside the safety rope after the spandex filament wrapping and coating process,and the stress transmission can be realized by synchronous force deformation with the rope.The resistance responsiveness and linearity of the sensing life safety rope were tested using a universal tensile tester and resistance acquisition device.The experimental results showed that the stress-strain-resistance signal of the sensing yarn is output linearly in the elastic deformation range.The sensing yarn responds positively to applied tensile loads with a linearity of 0.98856.In multiple stretching cycles,the sensing yarn has good stability.In the future,it can help firefighters determine the load situation in practice and simplify the calculation of rescue assessment.
作者
石洋
陈镜任
于沛
田明伟
王航
宫大鹏
丁杨
Shi Yang;Chen Jingren;Yu Pei;Tian Mingwei;Wang Hang;Gong Dapeng;Ding Yang(China Fire and Rescue Institute,Beijing 102202,China;Qingdao university College of Textiles&Clothing,Shandong Qingdao 266071,China)
出处
《消防科学与技术》
CAS
北大核心
2024年第12期1753-1758,1765,共7页
Fire Science and Technology
基金
国家重点研发计划项目(2023YFC3011704-2)。
关键词
可传感安全绳
拉阻式传感纱
传感性能分析
sensing safety rope
tensile resistance sensing yarn
sensing performance analysis
作者简介
石洋(1984-),男,中国消防救援学院科研处处长,主要从事森林防灭火、消防技术装备方面的研究,北京市昌平区南口镇南雁路4号,102202;通信作者:陈镜任(1992-),女,中国消防救援学院消防指挥系消防救援装备教研室讲师,主要从事消防技术装备方面的研究,102202,chenjingren@cfri.edu.cn。
