锁相红外热成像技术测量结构的应力分布

详细信息

MEASURING STRUCTURE STRESS DISTRIBUTION USING LOCK-IN INFRARED THERMOGRAPHY TECHNIQUE

China Aero-Polytechnology Establishment, Beijing 100028, China;2. Department of Mechanical Manufacture and Automation, Harbin Institute of Technology, Harbin 150001, China;3. Beijing Aerospace Control Center, Beijing 100094, China

摘要: 通过试验研究了运用锁相红外热成像技术进行结构应力测量时，加载频率的改变对于测量结果的重要影响，给出了合理确定加载频率这一重要参数的试验方法。将锁相红外热成像技术应用到航空工业飞机机翼蒙皮与骨架之间铆接结构应力分布地研究中，显示了锁相红外热成像技术在结构应力测量方面相对于传统应变片电测技术的明显优越性。
- 固体力学 /
- 应力测量 /
- 锁相 /
- 红外热成像 /
- 加载频率
Abstract: When the stress of a structure is measured the important effect toward measurement result caused by altering loading frequency was studied through experiment by adopting lock-in infrared thermography technique. The experiment method was given to choose a proper loading frequency, which was an important parameter. The lock-in infrared thermography technique was applied to the research of structure stress distribution of a riveted structure between the skin and framework of aerofoil in aviation industry, and apparent advantage of lock-in infrared thermography technique in structure stress measurement aspect was demonstrated, when comparing with conventional strain gauge electrical measurement technique.
- solid mechanics /
- stress measurement /
- lock-in /
- infrared thermography /
- loading frequency