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Требования к порядку и процедурам оценки расчётных значений характеристик конструкционной прочности металлических материалов основных и особо ответственных деталей при сертификации авиационных газотурбинных двигателей

Требования к порядку и процедурам оценки расчётных значений характеристик конструкционной прочности металлических материалов основных и особо ответственных деталей при сертификации авиационных газотурбинных двигателей

Abstract

Рассмотрены требования нормативных технических документов, предъявляемые при сертификации авиационных двигателей к порядку и процедурам оценки используемых при подтверждении прочности и ресурса основных и особо ответственных деталей, характеристик конструкционной (реализуемой в конструкции) прочности металлических сплавов. Описано содержание работ, выполняемых для подтверждения указанных требований разработчиком авиационного двигателя, разработчиком материала/полуфабриката и производителем двигателя. Рассмотрены задачи, решаемые на этапах общей и специальной квалификации материалов. Представлена номенклатура основных определяемых при квалификации сплавов, в том числе монокристаллических, механических характеристик. Указаны стандарты, в соответствии с которыми должны проводиться испытания. Приведены соотношения, необходимые для определения значений используемых при оценке прочности и долговечности деталей характеристик. Рассмотрены требования к статистической обработке результатов исследований конструкционной прочности сплавов и требования к установлению гарантированных при поставке материалов/полуфабрикатов значений механических свойств. Отмечена необходимость данных о возможном содержании в заготовках основных (критических по последствиям разрушения) деталей дефектов различных размеров. В библиографический список включены основные нормативные технические документы, выполнение требований которых необходимо при проведении специальной квалификации сплавов, применяемых для изготовления основных и ответственных деталей авиационных двигателей.

Requirements of the technical regulations for the order and procedure of estimating structural strength of metal alloys used in critical and main parts of aviation engines in their certification are outlined in the paper. The scope of work to be carried out by the engine designer, the developer of the material/semi-finished product and the engine manufacturer to confirm the compliance with the mentioned requirements is described. The tasks to be solved at different stages of general and special qualification of the material are discussed. The spectrum of the main mechanical characteristics of alloys, including mono-crystal alloys, to be determined during the qualification tests is presented. The standards in accordance to which the tests are to be performed are mentioned. Relationships for the determination of the material characteristics to be used in estimating the strength and service life of engine parts are given. The requirements for the statistical processing of the results of investigating the structural strength of alloys are discussed, as well as the requirements for setting the values of the mechanical properties guaranteed in the delivery of materials/semi-finished products. The necessity to have data on possible presence of different defects in the main (critical for safe operation) engine parts is mentioned. The reference list includes principal technical regulations the requirements of which are to be met during special qualification of alloys used for the manufacture of the main and critical aviation engine parts.

Keywords

СЕРТИФИКАЦИЯ ПРОИЗВОДИТЕЛЯ МАТЕРИАЛА/ПОЛУФАБРИКАТА,АТТЕСТАЦИЯ И АККРЕДИТАЦИЯ ИСПЫТАТЕЛЬНЫХ ЛАБОРАТОРИЙ,КВАЛИФИКАЦИЯ МАТЕРИАЛА/ПОЛУФАБРИКАТА,ХАРАКТЕРИСТИКИ КОНСТРУКЦИОННОЙ ПРОЧНОСТИ,CERTIFICATION OF MANUFACTURER’S MATERIAL/SEMI-FINISHED PRODUCT,ATTESTATION AND ACCREDITATION OF TESTING LABORATORIES,QUALIFICATION OF MATERIAL/SEMI-FINISHED PRODUCT,CHARACTERISTICS OF STRUCTURAL STRENGTH

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold