基于拉阻式氨纶弹性传感纱的可传感消防安全绳设计
Sensing life safety rope design based on tension spandex elastic yarn sensor
石洋 1陈镜任 1于沛 1田明伟 2王航 2宫大鹏 1丁杨1
作者信息
- 1. 中国消防救援学院,北京 102202
- 2. 青岛大学 纺织服装学院,山东 青岛 266071
- 折叠
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 0.988 56.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.
Abstract
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 span-dex 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 transmis-sion 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 re-sistance acquisition device.The experimental results showed that the stress-strain-resistance signal of the sensing yarn is output lin-early in the elastic deformation range.The sensing yarn responds positively to applied tensile loads with a linearity of 0.988 56.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.
关键词
可传感安全绳/拉阻式传感纱/传感性能分析Key words
sensing safety rope/tensile resistance sensing yarn/sensing performance analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据