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Impact Damage in Sandwich Composite Structures from Gas Gun Tests

Toso-Pentecote, Nathalie und Johnson, Alastair (2007) Impact Damage in Sandwich Composite Structures from Gas Gun Tests. In: ICEM13 International Conference on Experimental Mechanics. Experimental Analysis of Nano and Engineering Materials and Structures, 2007-07-01 - 2007-07-06, Alexandroupolis (Greece).

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Kurzfassung

The presentation describes a gas gun test programme to study impact damage in novel composite sandwich structures with folded composite cores (foldcore). Results from a series of high velocity impact (HVI) tests on two foldcore sandwich composite curved shells are presented in detail. Two impact scenarios relevant to aircraft fuselage upper and lower panel structures are described. These include hail impact scenarios: hail on ground with large ice balls at low velocity; hail in flight with small ice balls at high velocity; and hard runway debris, simulated by steel cubes typically 10 mm in size at impact speeds in the range 50 – 100 m/s. The aim of the test programme was to determine the critical energies and velocities for a given projectile and test panel causing first damage on the outer skin, perforation of the outer skin, first damage on the inner skin and finally the complete perforation of the sandwich panel. These damage thresholds are presented for two foldcore panels, one with a thin outer CFRP skin, and one with a more conventional balanced sandwich panel with thicker outer CFRP skin. The role of skin and core properties and thicknesses on the critical damage thresholds are discussed.

Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Impact Damage in Sandwich Composite Structures from Gas Gun Tests
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Toso-Pentecote, NathalieNICHT SPEZIFIZIERT
Johnson, AlastairNICHT SPEZIFIZIERT
Datum:Juli 2007
Erschienen in:ICEM13 International Conference on Experimental Mechanics
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
European Association for Experimental Mechanics (EURASEM), NICHT SPEZIFIZIERT
Status:akzeptierter Beitrag
Stichwörter:gas gun tests, impact damage, NDE, sandwich panels
Veranstaltungstitel:Experimental Analysis of Nano and Engineering Materials and Structures
Veranstaltungsort:Alexandroupolis (Greece)
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2007-07-01 - 2007-07-06
Veranstalter :European Association for Experimental Mechanics (EURASEM)
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Strukturen & Werkstoffe
Standort: Stuttgart
Institute & Einrichtungen:Institut für Bauweisen- und Konstruktionsforschung > Strukturelle Integrität
Hinterlegt von: Nathalie Toso
Hinterlegt am:27 Dez 2007
Letzte Änderung:27 Apr 2009 14:36

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