飞机结构应变测试系统的设计与实现  

Design and realization of strain test system for aircraft structure

作　　者：李猛[1] 杨钰[1] 毕大圆[1] 

机构地区：[1]空军第一航空学院,信阳464000

出　　处：《电子测量技术》2008年第10期118-121,124,共5页Electronic Measurement Technology

摘　　要：监测飞机关键疲劳部位的应力变化是预测飞机结构疲劳损伤程度的重要途径,对飞机单机寿命监控具有重大意义。本文以NICompactRIO技术为核心设计了机载应变测试系统,给出了在应变测试中消除长线传输误差的方法,并采用基于变级差有效载荷历程构建算法实现了有效载荷历程的构建,为后续疲劳损伤分析提供了可靠的保证。It is very important approach for monitoring and measuring the stress of the airplane key parts to help confirming the fatigue life of airplane and it is very significance for monitoring aircraft life. The airborne strain test system is designed based on NI CompactRIO. The way to eliminate long wire transferring error is introduced in detail. The effective load history is constructed by the algorithm of the unfixed level difference and it is credible guarantee to analysis the fatigue damage life later.

关 键 词：机载应变测试 CompactRIO载荷历程 

分 类 号：V231.95[航空宇航科学与技术—航空宇航推进理论与工程]