Accession Number : ADP006552

Title :   Fatigue Management for the A-7P,

Corporate Author : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE)

Personal Author(s) : Santos, Daniel

Report Date : DEC 1991

Pagination or Media Count : 19

Abstract : One objective of an Aircraft Structural Integrity Program (ASIP) in to ensure that all primary structure is both durable and damage tolerant; that is, it is able to resist both cracking and failure due to cracking. The heart of any durability and damage tolerance assessment is crack growth predictions. This requires a crack growth program, accurate stress intensity and load interaction models, and reliable material properties. With these tools both durability analysis and damage tolerance analysis can be perform. All potentially critical locations were assumed to exhibit slow crack growth. No fail-safe concepts were used, although many locations have alternate load paths that carry limit load.

Descriptors :   *FATIGUE(MECHANICS), *ATTACK AIRCRAFT, *AIRFRAMES, *CRACKING(FRACTURING), AIRCRAFT, CRACKS, DAMAGE, INTENSITY, INTERACTIONS, MATERIALS, MODELS, PREDICTIONS, FATIGUE LIFE, DAMAGE ASSESSMENT, TOLERANCES(MECHANICS), FAILURE(MECHANICS), LOADS(FORCES), CRACK PROPAGATION, STRESS ANALYSIS, DEFECTS(MATERIALS), SYMPOSIA, REPRINTS.

Subject Categories : Attack and Fighter Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE