IXRF法用于航空发动机磨损在线监测的研究

Aircraft Engine On Line Wear Monitor Based on Isotope X-Ray Fluorescence Method

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 。

An OLWM(On Line Wear Monitor) of aircraft engine based on IXRF(Isotope X Ray Fluorescence) method is illustrated. The lubrication oil of running engine has plenty of wear debris. IXRF method can detect the composition and content of different metal on line, according to the principle that different metals radiate different length of X ray. One advantage of this technique is that it can make the test rapid, reliable and contactless. The experimental results indicate that OLWM can examine the concentration of Fe and Cu in oil on time. The study and application of this method can make early failure prediction of engine and avoid serious fault.