摘要
为满足轨道交通用的铂电阻温度传感器的密封性要求,结合ABAQUS有限元分析手段,研究了灌封胶在灌封和高低温循环工况下的热应力状态,并通过对灌封胶的优化,缩小各个部件之间的热膨胀系数匹配差异,提升胶对壳体基材的粘接性,以降低体系的热应力,从而实现传感器的可靠密封。
In order to meet the sealing requirements for the platinum temperature sensor used in rail transport system,a study was conducted on the thermal stress states of the encapsulant during the potting process,the curing process and the temperature testing process by leveraging the method of ABAQUS finite element analysis.Meanwhile,by optimizing the physical and chemical properties of the encapsulant,the adhesion of encapsulant to substrate is strengthened while the consistency of the CTE of different components is increased.Thus,the thermal stress of the system is reduced to meet a higher sealing reliability for the sensor product.
作者
孙炎
黄文斌
SUN Yan;HUANG Wenbin(CRRC Transducer Measurement Technology R&D Center,Ningbo CRRC Times Transducer Technology Co.Ltd,Ningbo Zhejiang 315021,China)
出处
《传感技术学报》
CAS
CSCD
北大核心
2020年第7期967-973,共7页
Chinese Journal of Sensors and Actuators
基金
国家重点研发计划(2016YFB1200401)
宁波市工业重大科技专项攻关项目(2017B10017)。
关键词
温度传感器
密封可靠性
有限元分析
热膨胀系数
热应力
temperature sensor
sealing reliability
finite element analysis
coefficient of thermal expansion
thermal stress
