Low Energy Impact Damage Modes in Aluminum Foam and Polymer Foam Sandwich Structures

2006 ◽  
Vol 8 (5) ◽  
pp. 365-379 ◽  
Author(s):  
Paul Compston ◽  
Millicent Styles ◽  
Shankar Kalyanasundaram
Keyword(s):  
Aluminum Foam ◽  
Sandwich Structures ◽  
Impact Damage ◽  
Low Energy ◽  
Polymer Foam ◽  
Energy Impact

Studying Stability of CFRP Composites to Low-Energy Impact Damage by Laser Vibrometry

2019 ◽  
Vol 55 (9) ◽  
pp. 639-647
Author(s):  
V. Yu. Shpil’noi ◽  
V. P. Vavilov ◽  
D. A. Derusova ◽  
V. A. Krasnoveikin
Keyword(s):  
Impact Damage ◽  
Low Energy ◽  
Laser Vibrometry ◽  
Energy Impact ◽  
Cfrp Composites

Multi-Level Modeling of Low Velocity, Low Energy Impact on Metal-Skinned Sandwich Structure

2006 ◽  
Author(s):  
B. Castanie´ ◽  
C. Bouvet ◽  
J.-J. Barrau ◽  
P. Thevenet
Keyword(s):  
Phenomenological Study ◽  
Sandwich Structures ◽  
Element Model ◽  
Honeycomb Structure ◽  
Low Energy ◽  
Low Velocity ◽  
Uniform Compression ◽  
Energy Impact ◽  
Nonlinear Springs ◽  
Static Indentation

The research objective is to model the low velocity/low energy impact on sandwich structures with metallic skins. A progressive approach is carried out by considering first the honeycomb core alone, then static indentation on sandwich structures and finally a dynamic analysis. During the first step, a phenomenological study of the behavior of honeycomb subjected to crushing is completed. It appears that local rotations and cell edges plays an important role in the crushing phenomenon. It is then possible to propose a simple analytical model able to represent the indentation of honeycomb alone for various indenter geometries by modelling only the cell edges behavior. The compression law of the cell edges is identified by a basic uniform compression test. This key-idea is then used to create a finite element model using a grid of nonlinear springs to represent the honeycomb structure. The contact law of static indentation tests of metal-skins Nomex™ honeycomb sandwich structures can thus be found numerically and agree well with the experiments. Finally, this contact law can be used to model dynamic impacts which demonstrates the static/dynamic equivalence for this range of impact and structures.

Evaluation of repeated low energy impact damage in carbon–epoxy composite materials

2005 ◽  
Vol 67 (3) ◽  
pp. 307-315 ◽  
Author(s):  
W.A. de Morais ◽  
S.N. Monteiro ◽  
J.R.M. d'Almeida
Keyword(s):  
Composite Materials ◽  
Epoxy Composite ◽  
Impact Damage ◽  
Low Energy ◽  
Energy Impact

A universal NDT method for examination of low energy impact damage in CFRP with the use of TLC film

2018 ◽  
Vol 33 (3) ◽  
pp. 315-328 ◽  
Author(s):  
G. Strugała ◽  
M. Klugmann ◽  
M. Landowski ◽  
M. Szkodo ◽  
D. Mikielewicz
Keyword(s):  
Impact Damage ◽  
Low Energy ◽  
Energy Impact
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