摘要
长时间压应力测试是研究含能材料物理性能的一项重要方法。为了解某类型含能材料通过模拟复杂热力加载边界条件下的整体承载能力变化规律,需对试验实时温湿度、加载力载荷和位移变化情况进行监测与分析,从而获得试验构件在老化加载过程中损伤累积和裂纹萌发信息。基于以太网的多参数压应力监测系统进行设计,系统包括8套同样的模拟加载试验装置。应力加载采取液压缸、砝码与杠杆加载的方式,在试验装置上加载较轻砝码,可在试验端获得75倍大小压力,并通过液压缸实现长时间保压作用。每套试验装置均安装有压力、位移、温湿度传感器和以太网数据采集模块,通过数据采集与转换,监测载荷情况下材料变化情况,并通过软件对监测数据进行记录,从而实现长时间加载下8套试验材料多参数的监测与分析。
The long-term compressive stress test is an important method in the study of energetic material.In order to understand the change law of overall capacity of a certain type of energetic material by simulating the complex thermal loading boundary conditions,the real-time temperature,humidity,loading force and displacement changes in the test are monitored and analyzed,so as to obtain the information of damage accumulation and crack germination of the test component during the aging loading process.In the article,a multi-parameter compressive stress monitoring system based on Ethernet has been designed.The system includes 8 sets of the same simulation loading test device,and the stress loading adopts the method of hydraulic cylinder,weight and benchmark.The device can magnify the weight by 75 times,and the hydraulic cylinder can achieve long-term stress holding.Each device is equipped with a temperature and humidity,a stress,and a displacement sensor,and a Ethernet data acquisition module.Through data acquisition and conversion,the material changes under load conditions are monitored and recorded by the software,so as to realize the multi-parameter monitoring and analysis of 8 sets test materials under long-term loading conditions.
作者
陆蔺辉
唐佳庆
李维
韦兴文
杨冯超
LU Linhui;TANG Jiaqing;LI Wei;WEI Xingwen;YANG Fengchao(Institute of chemical materials,China academy of engineering physics,Mianyang 621999,China)
出处
《自动化与仪器仪表》
2021年第12期59-62,共4页
Automation & Instrumentation
关键词
以太网
压力传感器
位移传感器
温湿度传感器
信号采集模块
虚拟仪器
ethernet
pressure sensor
displacement sensor
temperature and humidity sensor
signal acquisition module
virtual instrument
