介绍了一种基于同位素X射线荧光法 (IXRF法 )的航空发动机磨损在线监测系统 .航空发动机滑油中携带了大量的金属磨损屑末 ,利用不同金属释放出不同特征X射线的原理 ,可以检测出滑油中不同种类金属的成份及含量 .此种方法具有快速、可靠、非接触等特点 .实验结果表明 ,在线监测系统能够实时地检测出滑油中的铜、铁浓度 .该项技术的研究和应用 ,可以对发动机的磨损故障进行早期预报 ,避免恶性事故的发生 An on-line abrasion on-line monitoring system based on isotope X-ray fluorescence (IXRF) is introduced.The aero-engine lubricating oil carries a large amount of metal wear debris and uses the principle that different metals release different characteristic X-rays and can detect This method is fast, reliable, non-contact, etc. The experimental results show that online monitoring system can detect the concentration of copper and iron in oil in real time. Research and application of early warning of wear and tear of the engine to prevent the occurrence of a serious accident