Effect of Natural Environment on Sandwich Structure with AMS 3722 Paper Honeycomb-Core

2009 ◽  
pp. 9-9-9
Author(s):  
Robert F. Zemer
Keyword(s):  
Natural Environment ◽  
Sandwich Structure ◽  
Honeycomb Core ◽  
Paper Honeycomb

scholarly journals Compression Properties and Its Prediction of Wood-Based Sandwich Panels with a Novel Taiji Honeycomb Core

Forests ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 886 ◽  
Author(s):  
Jingxin Hao ◽  
Xinfeng Wu ◽  
Gloria Oporto-Velasquez ◽  
Jingxin Wang ◽  
Gregory Dahle
Keyword(s):  
Compression Strength ◽  
Sandwich Structure ◽  
Mechanical Performance ◽  
Compression Modulus ◽  
Honeycomb Core ◽  
Compression Behavior ◽  
Measurement Systems ◽  
Compression Properties ◽  
Entire Structure ◽  
Core Thickness

The transverse compression property is one of most important aspects of the mechanical performance of a sandwich structure with a soft core. An experiment, analytical method and three digital strain measurement systems were applied to investigate the compression behavior and the failure mechanism for a wood-based sandwich structure with a novel Taiji honeycomb core. The results show that the structure of the Taiji honeycomb can improve dramatically on compression strength and modulus of composite compared to that of a traditional hexagonal one. There was no obvious deflection in the transverse direction detected by the three digital images before the buckling of the honeycomb occurred. An analytical equation between the key structure parameters and properties of the composite were applied to predict its threshold stresses and modulus. The properties of the core determine the strength of the entire structure, but the compression strength decreases slightly with an elevated core thickness, and its effect on the compression modulus can be neglected. Both the surface sheets and loading speed have little impact on the compression strength and modulus, respectively.

Flexural Behavior of Sandwich Structure with AA 8011 Honeycomb Core and Al 1100 Face Skins

2018 ◽  
Vol 10 (6) ◽  
Author(s):  
M.R. Ashok ◽  
M. Manojkumar ◽  
P.V. Inbanaathan ◽  
R. Shanmuga Prakash
Keyword(s):  
Finite Element Analysis ◽  
Sandwich Structure ◽  
Flexural Behavior ◽  
Bending Test ◽  
Honeycomb Core ◽  
Element Analysis ◽  
Three Point Bending ◽  
The Core ◽  
Flexural Testing ◽  
The Face

This paper details the fabrication and flexural testing of sandwich structure with Aluminium honeycomb core with Aluminium face skins. The material for the face skin is aluminium 1100 and for the core is Aluminium AA8011. The cell size obtained by fabrication is 7mm. The specimen is prepared and tested as per the ASTM standard C393/C393M-11 on a three-point bending test to obtain the ultimate core shear strength and the face skin strength. Finite element analysis is also carried out to validate the experimental test.

scholarly journals Flexural Behavior of Aluminum Honeycomb Core Sandwich Structure

2017 ◽  
Vol 197 ◽  
pp. 012046 ◽  
Author(s):  
Vidyasagar Matta ◽  
J Suresh Kumar ◽  
Duddu Venkataraviteja ◽  
Guggulla Bharath Kumar Reddy
Keyword(s):  
Sandwich Structure ◽  
Flexural Behavior ◽  
Honeycomb Core ◽  
Aluminum Honeycomb

Detection of Unbonds in Honeycomb Sandwich Structure Using Lock-In Thermography

2010 ◽  
Vol 97-101 ◽  
pp. 4363-4366
Author(s):  
Hui Liu ◽  
Jun Yan Liu ◽  
Yang Wang ◽  
Hui Juan Li
Keyword(s):  
Sandwich Structure ◽  
Sandwich Structures ◽  
Modulation Frequency ◽  
Influencing Factor ◽  
Face Sheet ◽  
Honeycomb Core ◽  
Honeycomb Sandwich ◽  
Testing Technology ◽  
Lock In ◽  
Honeycomb Sandwich Structure

Lock-in thermography (LT), that is active infrared testing technology, mainly includes optical lock-in thermography (OLT) and ultrasound lock-in thermography (ULT). LT can be used to detect unbonds between honeycomb core and face sheet of sandwich structures. However, modulation frequency is an important influencing factor. In this paper, the principles of LT are represented, in experimental detections of simulated unbonds in honeycomb sandwich structures with Al-face sheet and CFRP-face sheet using OLT and ULT, detectability of OLT and ULT is compared and analyzed, effect of modulation frequency is researched and the optimal frequencies are obtained.

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