Cryogenic fracture toughness testing of aluminium 2195 surface cracks
Cryogenic fracture toughness testing of aluminium 2195 surface cracks
- Neue Suche nach: Ernsberger, K.
- Neue Suche nach: Sperlich, E.
- Neue Suche nach: Ernsberger, K.
- Neue Suche nach: Sperlich, E.
Actual cryogenic space tank aluminium technology uses preferably AA2219 because of its high strength and fracture toughness . The aluminium-lithium alloy AA2195 permits weight saving by still higher strength and lower material density, but it charges slightly lower fracture toughness and higher material processing effort. The paper describes method and results of tensile testing and surface-crack fracture toughness testing of flat and spinformed AA2195 tank material under room and LHe temperature conditions. In order to reduce cost and material for surface crack tensile (SCT) testing, an altenative method besides the standards is analyzed and verified: the surface crack bending (SCB) test. Operations and cost impacts as well as SCB and SCT test results are compared.
Dokumentinformationen
Cryogenic fracture toughness testing of aluminium 2195 surface cracks
Kältetechnische Rißbeständigkeitsprüfung von Oberflächenrissen in Aluminium 2195
1994
6 Seiten, 9 Bilder, 4 Tabellen, 8 Quellen
Aufsatz (Konferenz)
Englisch
Kältetechnik , Raumfahrt , Kraftstoffbehälter , Aluminiumlegierung , Rissneigung , Zähfestigkeit , Messen mechanischer Spannung , Materialbearbeitung , Oberflächenriss , Raumtemperatur , Flüssighelium , Kosteneinsparung , Biegeprüfung , Raumfahrtindustrie , Bruchzähigkeit , Messen mechanischer Größen
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