elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Assessment of Impact Damage in Twin-walled Composite Structures

Johnson, Alastair and Toso-Pentecote, Nathalie and Aoki-Sugiyama, Rodolfo (2006) Assessment of Impact Damage in Twin-walled Composite Structures. CDCM06 (Conference on Damage in composite materials), 2006-09-18 - 2006-09-19, Stuttgart (Germany). (Unpublished)

Full text not available from this repository.

Abstract

The presentation describes recent progress on damage assessment in novel aircraft sandwich structures subjected to foreign object impacts from both hard and soft impactors. A gas gun impact test programme was carried out on twin-walled composite panels under a range of impact conditions. Impact damage to the outer skins, core and inner skins was characterised by a number of NDE techniques, including ultrasonic C-scan, X-ray and lock-in thermography. The high velocity impact test programme was then used to validate simulation methods developed for the prediction of structural damage in composite structures under impact loads. Composites ply damage models and interply delamination models have been developed and implemented in commercial explicit FE codes. The failure models and code developments were applied to predict transverse impact damage in the sandwich skin laminates and penetration into the core. The paper assesses the effectiveness of NDE methods in capturing impact damage in these twin-walled structures and summarises the status of FE modelling techniques for damage modelling in composite aircraft structures.

Document Type:Conference or Workshop Item (Speech)
Title:Assessment of Impact Damage in Twin-walled Composite Structures
Authors:
AuthorsInstitution or Email of Authors
Johnson, AlastairUNSPECIFIED
Toso-Pentecote, NathalieUNSPECIFIED
Aoki-Sugiyama, RodolfoUNSPECIFIED
Date:September 2006
Refereed publication:Yes
In ISI Web of Science:No
Status:Unpublished
Keywords:damage assessment, sandwich, NDE techniques, composite modelling
Event Title:CDCM06 (Conference on Damage in composite materials)
Event Location:Stuttgart (Germany)
Event Type:international Conference
Event Dates:2006-09-18 - 2006-09-19
Organizer:Institut für Struktur und Dynamik (ISD), Universität Stuttgart
HGF - Research field:Aeronautics, Space and Transport (old)
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 > Ceramic Composite Structures
Institute of Structures and Design > Structural Integrity
Deposited By: Nathalie Toso
Deposited On:20 Nov 2006
Last Modified:27 Apr 2009 13:14

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.