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Experimental study of damage tolerance in pre-stressed composite panels under gas gun impact

Toso-Pentecôte, Nathalie and Johnson, Alastair and Waite, Simon (2012) Experimental study of damage tolerance in pre-stressed composite panels under gas gun impact. In: ECCM15 proceedings. ECCM15 - 15th European Conference on Composite Materials, 24-28 June 2012, Venice, Italien.

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Abstract

The paper describes a gas gun impact test programme on pre-loaded composite panels, where two impact scenarios are considered: Notch damage from 12 mm steel cube projectiles, and blunt impact damage from glass balls. The influence of preload and impact damage on residual strengths are studied. Tests show very good structural integrity for composite panels in tension and compression under notch impact damage, with no significant reduction in strength due to pre-loading. However, blunt impact tests lead to large delamination damage regions, reducing compression strength in buckling, which is intensified by compression pre-load.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Experimental study of damage tolerance in pre-stressed composite panels under gas gun impact
Authors:
AuthorsInstitution or Email of Authors
Toso-Pentecôte, Nathalienathalie.toso@dlr.de
Johnson, AlastairCompositesConsult
Waite, SimonEASA Köln
Date:June 2012
Journal or Publication Title:ECCM15 proceedings
Status:Published
Keywords:damage tolerance, gas gun impact tests, composite panel
Event Title:ECCM15 - 15th European Conference on Composite Materials
Event Location:Venice, Italien
Event Type:international Conference
Event Dates:24-28 June 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Nathalie Toso
Deposited On:23 Jul 2012 12:56
Last Modified:23 Jul 2012 12:56

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