发动机典型寿命敏感件环境谱加速技术研究现状

对发动机寿命敏感件环境谱加速技术的研究现状进行分析。从加速环境谱的编制原则、编制方法以及当量关系的确定和验证等方面，详细介绍了加速环境谱的概念内涵。发动机的使用寿命主要受金属敏感件的腐蚀和非金属敏感件的老化制约，重点从常规加速腐蚀试验、多因素综合腐蚀试验和高温加速腐蚀试验等3个方面阐述了加速腐蚀试验方法。从液体介质老化、热氧老化、综合环境老化等方面介绍了以橡胶为代表的非金属加速老化试验方法。最后指出目前当量关系确定方法的局限性和多因素综合模拟方法研究方面的欠缺，提出应综合材料、腐蚀、力学、环境等多学科的相关理论和实践，制定更加科学合理的当量关系确定方法，以及注重新型试验设备的研发等建议。

Research Status of Environmental Spectrum Acceleration Techniques for Typical Life Sensitive Parts in Engines

The work aims to analyze the research status of environmental spectrum acceleration techniques for life sensitive parts in engines. The concept and connotation of accelerated environmental spectrum were introduced in detail from the compiling principle, compiling method and the determination and verification of equivalent relation. The service life of engine was mainly restricted by the corrosion of metal sensitive parts and the aging of non-metal sensitive parts. The accelerated corrosion test methods were mainly described from three aspects:conventional accelerated corrosion test, multi-factor comperhensive test and high temperature accelerated corrosion test. The accelerated aging test methods of non-metals represented by rubber were introduced from the aspects of liquid medium aging, hot oxygen aging and comprehensive environmental aging. Finally, it pointed out the limitations of the current method of determining equivalent relation and the deficiency of the research of multi-factor integrated simulation method, and put forward the suggestion that a more scientific and reasonable method of determining equivalent relation should be formulated based on the relevant theories and practices of materials, corrosion, mechanics, environment science and other disciplines, and attention should be paid to the research and development of new test equipment.