Failureanalysis of pressure sensors in vibration environment
CUI Hongmin1,CHEN Baocheng1,CUI Guanghao1,DING Zhongkai1,HU Yuncong2
1. China Electronics Technology Company Group Forty-nine Research Institute,Harbin 150001,China；
2.China Aerospace Science and Industry Group Thirty-one Research Institute,Beijing 100074,China
In a complex vibration environment,some kind of pressure sensors with specific structure may often meet the case of internal down-lead fracture due to vibration fatigue,which can be determined through the observation of internal down-lead cross section and fracture profile. The mechanical model of the lead wire was simplified as a Bernoulli-Euler beam. Its fundamental frequency was calculated theoretically and compared with the results of finite element analysis. It is proved that the finite element model can reflect the dynamics of sensor accurately. Applying proper finite element,a modal analysis was carried out,the results of calculation and test were compared,and the reason of fracture,revealed by the analysis,was proved to be correct.
[1] 孟召丽，秦 丽，吴永亮. 硅压阻式压力传感器可靠性强化试验及失效分析[J]. 仪器仪表学报，2008，29(8)：124-126.
MENG Zhao-li, QIN Li, WU Yong-liang. Reliability enhancement test and failure analysis of piezoresistive pressure sensor [J]. Chinese Journal of Scientific Instrument, 2008，29(8):124-126.
[2] 齐 虹，王蕴辉，易德兴. 硅压力传感器的可靠性试验方法及失效分析[J]. 传感器技术学报，2001，20(4)：31-33.
QI Hong, WANG Yun-hun, YI De-xing. Reliability test methords and failure analysis of piezoresistive pressure sensor [J]. Chinese Journal of Sensors and Actuators, 2001，20(4) :31-33.
[3] 孔 迪. 某型航空发动机进气压力畸变试验研究[J].航空发动机，2014,40 (3)：60-65.
KONG Di. Experimental study on inlet pressure distortion of an aeroengine[J]. Aeroengine, 2014, 40(3)：60-65.
[4] 李宏新，李国权. 航空发动机动力传输系统的技术发展思考[J].航空发动机，2013,39(2)：1-5.
LI Hong-xin, LI Quan-guo. Technology development thought on aeroengine power transmission system [J]. Aeroengine, 2013, 39(2): 1-5.
[5] 梁春华，刘红霞，常德军，等. 美国航空航天平台与推进系统的未来发展与启示[J].航空发动机，2013,39(3)：6-11.
LIANG Chun-hua, LIU Hong-xia, CHANG De-jun, etal. Future development and enlightenments for US aerospace platform and propulsion system [J]. Aeroengine, 2013, 39(3)：6-11.
[6] 陈大光，张津.飞机-发动机性能匹配与优化[M].北京：北京航空航天大学出版社，1990.
CHEN Da-guang, ZHAN Jin, Aircraft engine performence adaptation and optimization [M]. Beijing：Beihang University Press, 1990.
[7] 林 琳. 机载电子产品的环境适应性研究[J].电子产品可靠性与环境试验，2006, 24(4)：34-37.
LIN Lin. Study on environmental adaptability of airborne electronic products [J]. Electronic Product Reliability and Environment Test, 2006, 24(4)：34-37.
[8] 曲晓燕，邓 力. 舰载武器海洋环境适应性分析[J].船舶电子工程，2011，202(4) ：138-146.
QU Xiao-yan, DENG Li. Adaptability analysis of shipborne weapon of the marine environment [J]. Ship Electronic Engineering 2011, 202 (4)：138-146.
[9] 廉政.典型结构件的振动疲劳分析[D]. 南京：南京航空航天大学，2010.
LIAN Zheng. Vibration fatigue analysis of typical structure components[D].Nan Jing：Nanjing University of Aeronantics and Astronautics,2010.
