摘要
提出一种新的安全气囊织物动态透气性的测试方法,其测试装置主要由高压气室和低压气室构成,两气室之间由聚酯薄膜间隔,安全气囊织物置于低压气室的末端,与大气相通.当高压气室的压力达到一定值时薄膜爆破,高压气室内的气体瞬时进入低压气室,使低压气室内的压力迅速增至最大,而后由于织物的通透性,其压力逐渐下降.通过对气室内气体压力动态变化的测试,可计算得到安全气囊织物的动态透气率.
A new method is proposed for measuring the dynamic permeability of airbag fabrics. The measuring device is composed of a driver chamber and a driven chamber separated by a polyester diaphragm. An airbag fabric sample is clamped at the end of the open driven chamber. When the driver chamber is charged with air to a certain pressure, the diaphragm ruptures. Meanwhile the air in the driver chamber discharges into the driven chamber and a high pressure is built up in the driven chamber quickly. And then the pressure decreases gradually due to the permeable structure of airbag fabrics. The air permeability of the airbag fabric is thus determined by measuring the pressure trace in the driven chamber.
出处
《测试技术学报》
2007年第5期396-399,共4页
Journal of Test and Measurement Technology
基金
霍英东教育基金会第十届高等院校青年教师基金资助项目(1010740)
关键词
安全气囊
织物
动态透气性
测试
airbag
fabric
dynamic permeability
measurement
