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Damage Tolerance Verification Concept of the ARIANE 5 Booster Case Welded Interface
Author(s) -
Windisch M.,
Clormann U.,
Grunmach R.,
Burget W.,
Sun D.Z.
Publication year - 2001
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/1521-4052(200104)32:4<307::aid-mawe307>3.0.co;2-3
Subject(s) - booster (rocketry) , welding , structural engineering , mechanical engineering , engineering , materials science , aerospace engineering
In the course of an ARIANE 5 evolution program, the booster cases made of 48 CrMoNiV 4 10 high strength, low alloy steel will be modified such that 6 of the shear bolt connections will be replaced by EB‐welds as illustrated in Fig. 1 . The introduction of welds has been chosen to achieve the following goals: • Mass reduction • Cost reduction • Increase of reliability • Simplification of thermal insulation application The concept of the damage tolerance verification which is in progress for justification of the improved booster cases is presented. By a very detailed local approach based on the characterization of the properties and the mechanical behaviour of the different zones of a weld seam, the overall damage tolerance of the weld shall be derived. The achieved prediction model has been verified by different component tests and will finally be qualified by a full scale qualification test.