Hierarchical anisogrid stiffened composite panel subjected to blast loading: Equivalent theory

2018 ◽  
Vol 187 ◽  
pp. 259-268 ◽  
Author(s):  
Bei Zhang ◽  
Fengnian Jin ◽  
Zheng Zhao ◽  
Zhongxin Zhou ◽  
Ying Xu ◽  
...  
Keyword(s):  
Blast Loading ◽  
Composite Panel ◽  
Equivalent Theory

Influences of Material and Geometry in the Performance of Auxetic Composite Structure under Blast Loading

2016 ◽  
Vol 846 ◽  
pp. 476-481 ◽  
Author(s):  
Gabriele Imbalzano ◽  
Phuong Tran ◽  
Peter V.S. Lee ◽  
Dayalan Gunasegaram ◽  
Tuan D. Ngo
Keyword(s):  
Numerical Model ◽  
Blast Loading ◽  
General Linear Model ◽  
Composite Panel ◽  
Taguchi Design Of Experiment ◽  
The Core ◽  
Cellular Composite ◽  
Auxetic Structures ◽  
Statistical Studies ◽  
Auxetic Structure

This paper aims at investigating the deformation and damage mechanisms of auxetic sandwich panels subjected to localised blast. The ability of self-densifying and adjusting to the loads, typical of auxetic structures, has been evaluated. A numerical model of the auxetic cellular composite panel has been developed to conduct statistical studies on different parameters (core geometry and material) using Taguchi design of experiment (DOE) method combined with general linear model (GLM) for analysis of variance (ANOVA). The optimisation has been conducted evaluating different parameters: energy absorption of the entire panel and deformation of the back facet were measured. The analysis of the numerical model of the core suggests the importance of the self-adapting mechanism of the auxetic structure under blast loading.

scholarly journals Simulation on the shock attenuation behavior of coupled RHA and sandwich composite panel under blast loading

2018 ◽  
Vol 9 (3S) ◽  
pp. 555 ◽  
Author(s):  
M.F.M. Isa ◽  
M.S. Risby ◽  
M.N. Norazman ◽  
S. Khalis ◽  
M.N. Hafizi ◽  
...  
Keyword(s):  
Blast Loading ◽  
Composite Panel ◽  
Sandwich Composite ◽  
Shock Attenuation

Different Composite Behaviours under Blast Loading

2019 ◽  
Vol 812 ◽  
pp. 84-91
Author(s):  
Arthur Voisin ◽  
Jonathan Pariente ◽  
Sébastien Lemercier ◽  
Damien Soulat ◽  
François Boussu
Keyword(s):  
Blast Resistance ◽  
Permanent Deformation ◽  
Blast Loading ◽  
Composite Panel ◽  
Bending Rigidity ◽  
Back Plate ◽  
Fiber Metal ◽  
Armored Vehicle ◽  
Improvised Explosive ◽  
Explosive Devices

Landmines and Improvised Explosive Devices are known to be major threats for the coalition armies in operation. In order to protect the soldiers from their effects, armored vehicle manufacturers developed some blast protective solutions. However, these solutions often reduce the vehicles’ mobility and payload capacity because of their shape or weight. Fiber Metal Laminates (FML) look like promising light weight blast protective solutions as they associate low areal densities with good bending rigidity and a high number of impedance mismatches which tend to attenuate the shock wave propagation. In this paper, three FML composed of a back plate of armored steel, a middle composite panel named A, B or C and a thin front plate made of mild steel were subjected to a blast loading. The maximum dynamic deformation of each target was recorded during the blast test. A macroscopic post-mortem analysis exhibits three similar behaviors of the back plates but very different permanent deformation patterns of the composite panels. A CT-scan of each panel was then realized to explain these three patterns and, based on these analysis, some hypothesis were made to improve the blast resistance of the B and C panels.

Equivalent static load method for hierarchical stiffened composite panel subjected to blast loading

2018 ◽  
Vol 171 ◽  
pp. 569-582 ◽  
Author(s):  
Bei Zhang ◽  
Hailong Chen ◽  
Ming Li ◽  
Zheng Zhao ◽  
Yinzhi Zhou ◽  
...  
Keyword(s):  
Static Load ◽  
Blast Loading ◽  
Composite Panel ◽  
Equivalent Static Load

Using a shock tube to predict the response of polymeric foam to a blast loading

2006 ◽  
Vol 134 ◽  
pp. 783-787 ◽  
Author(s):  
S. Ouellet ◽  
D. Frost ◽  
A. Bouamoul
Keyword(s):  
Shock Tube ◽  
Blast Loading ◽  
Polymeric Foam

Non-Destructive Testing of Thermoplastic Carbon Composite Structures

2020 ◽  
Vol 2020 (1) ◽  
pp. 34-52
Author(s):  
Rafał Szymański
Keyword(s):  
Composite Structures ◽  
Ultrasonic Method ◽  
Composite Panel ◽  
Aviation Industry ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Pulse Technique ◽  
Thermoplastic Matrix ◽  
The Subject ◽  
Non Destructive

AbstractThe article is in line with the contemporary interests of companies from the aviation industry. It describes thermoplastic material and inspection techniques used in leading aviation companies. The subject matter of non-destructive testing currently used in aircraft inspections of composite structures is approximated and each of the methods used is briefly described. The characteristics of carbon preimpregnates in thermoplastic matrix are also presented, as well as types of thermoplastic materials and examples of their application in surface ship construction. The advantages, disadvantages and limitations for these materials are listed. The focus was put on the explanation of the ultrasonic method, which is the most commonly used method during the inspection of composite structures at the production and exploitation stage. Describing the ultrasonic method, the focus was put on echo pulse technique and the use of modern Phased Array heads. Incompatibilities most frequently occurring and detected in composite materials with thermosetting and thermoplastic matrix were listed and described. A thermoplastic flat composite panel made of carbon pre-impregnate in a high-temperature matrix (over 300°C), which was the subject of the study, was described. The results of non-destructive testing (ultrasonic method) of thermoplastic panel were presented and conclusions were drawn.

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