...
首页> 外文期刊>Journal of Aerospace Sciences and Technologies >LIFE ANALYSIS OF TBC ON AN AERO ENGINE COMBUSTOR BASED ON IN-SERVICE FAILURES DATA
【24h】

LIFE ANALYSIS OF TBC ON AN AERO ENGINE COMBUSTOR BASED ON IN-SERVICE FAILURES DATA

机译:基于在役故障数据的航空发动机燃烧器TBC寿命分析

获取原文
获取原文并翻译 | 示例
           

摘要

TBC (Thermal Barrier Coatings) mostly find application in the combustion sections of aircraft turbine engines. With the demand for fuel economy and increased power, combustion temperatures are approaching the design limits of the metal alloys from which hot end components are made. Modern TBCs are required to not only limit heat transfer through the coating but to also protect engine components from oxidation and hot corrosion. When a TBC fails, it exposes the underlying substrate to very high gas temperatures and the life of the component gets reduce drastically. With a failed TBC, a component can even fail within its prescribed service life. This is an airworthiness issue. So it is essential to estimate the TBC life accurate possibly to ensure airworthiness of the aircraft at any given time. Premature failure are observed in the TBC applied over combustion section of a turboprop engine. The engine is 800 shp class and it powers a commuter aircraft. The objective of this paper is to find out mean life of the coating by life data analysis. The data has been fitted to Weibull distribution. The Weibull parameters have been discussed which highlights the dominating cause for TBC failure and hence suggestion for life improvement of TBC system has also been made. The need for TBC system redesign has been emphasized. In addition to this, it also presents a comparison between different users/ operators.
机译:TBC(热障涂层)主要用于飞机涡轮发动机的燃烧部分。随着对燃料经济性和功率增加的需求,燃烧温度已经接近用于制造热端部件的金属合金的设计极限。现代TBC不仅需要限制通过涂层的热传递,而且还需要保护发动机组件免受氧化和热腐蚀。当TBC发生故障时,它将使下面的基板暴露于非常高的气体温度下,并且组件的寿命会大大缩短。如果TBC出现故障,则组件甚至可能在规定的使用寿命内发生故障。这是一个适航问题。因此,至关重要的是要准确估计TBC寿命,以确保飞机在任何给定时间适航。在涡轮螺旋桨发动机燃烧段上使用的TBC中观察到过早失效。发动机为800 shp级,为通勤飞机提供动力。本文的目的是通过寿命数据分析找出涂层的平均寿命。数据已拟合到威布尔分布。讨论了Weibull参数,该参数突出了TBC失效的主要原因,因此也提出了改善TBC系统寿命的建议。强调了对TBC系统重新设计的需求。除此之外,它还提出了不同用户/运营商之间的比较。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号