Based on years of airworthiness regulations research,combined with the experience of airworthiness certification of civil aviation products,the airworthiness requirement to materials for civil aviation products was analyzed.The key airworthiness requirement for materials is that materials should conform to some material specification to ensure their having the strength and other properties adopted in the design data.The shortcomings of domestic airworthiness management methods for civil aviation materials was discussed and three recommendations for improvement were proposed:(1) conduct individual airworthiness management for civil aviation materials according to CCAR 21.351 through 371 and CCAR 37;(2) develop and promote statistical-based material specification developing methods,to establish material specifications which could ensure material having the strength and other properties adopted in the design data;(3) establish a cooperation mechanism for developing material design value data base for civil aviation materials to reduce the cost of airworthiness certification activities.At the end of this paper,statistical methods used for establishing material specifications were discussed.%以适航规章研究为基础,结合民用航空器适航审定的经验,分析适航规章对材料的适航条款,总结出对材料的核心适航要求是:材料应符合某种材料规范,材料规范保证材料具有设计资料所采用的强度性能和其他性能.分析国内民用航空材料适航管理方法,提出改进建议:(1)依据CCAR21.351至371条和CCAR 37的有关规定,对民用航空材料开展单独适航管理;(2)研究并推广基于统计的材料规范制定方法,用于建立能够保证材料具有设计资料所采用的强度性能和其他性能的材料规范;(3)建立民用航空材料协作机制,基于统计建立民用航空材料设计值手册,降低适航取证成本.最后给出材料规范建立过程中可采用的统计方法,为材料规范的建立提供了技术方法.
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