Characterization of Sandwich Beams with Shear Damage by Linear Vibration Method

2016 ◽  
pp. 55-63
Author(s):  
I. Ben Ammar ◽  
C. Karra ◽  
A. El Mahi ◽  
R. El Guerjouma ◽  
Mohamed Haddar
Keyword(s):  
Sandwich Beams ◽  
Linear Vibration ◽  
Shear Damage ◽  
Vibration Method

Characterization of the Flexural Behavior of SMP Sandwich Beam

2010 ◽  
Vol 123-125 ◽  
pp. 939-942 ◽  
Author(s):  
Zheng Fa Li ◽  
Zheng Dao Wang
Keyword(s):  
Shape Memory ◽  
Sandwich Structures ◽  
Sandwich Beam ◽  
Shape Memory Polymers ◽  
Flexural Behavior ◽  
Sandwich Beams ◽  
Lower Recovery

Shape memory polymers (SMPs) can have a large frozen strain but providing much lower recovery stresses. To overcome such disadvantage, sandwich structures consisted of a SMP core and two thin metallic skins was considered. Due to much compliance of the SMP core, SMP sandwich beam is buckled at a lower packaging strain. Buckling is the fundamental character of SMP sandwich beam under bending. The critical buckling parameters about two types of SMP sandwich beams were theoretically derived.

Characterization of Face Sheet/Core Shear Fracture of Composite Sandwich Beams

1991 ◽  
Vol 25 (1) ◽  
pp. 101-116 ◽  
Author(s):  
L. A. Carlsson ◽  
L. S. Sendlein ◽  
S. L. Merry
Keyword(s):  
Shear Fracture ◽  
Face Sheet ◽  
Sandwich Beams ◽  
Composite Sandwich

Fabrication and characterization of microscale sandwich beams

2001 ◽  
Vol 16 (2) ◽  
pp. 597-605 ◽  
Author(s):  
Francisco Arias ◽  
Paul J.A. Kenis ◽  
Bing Xu ◽  
Tao Deng ◽  
Olivier J.A. Schueller ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Beam Theory ◽  
Shear Stiffness ◽  
Sandwich Beams ◽  
The Core ◽  
The Face ◽  
Polymer Metal ◽  
Fabrication And Characterization ◽  
Bending Response

Microscale sandwich beams with cell diameters and wall widths down to 150 and 15 μm, respectively, and having both metallic and polymer/metal cores were produced through fabrication methods that combined photolithography and electrodeposition. Various core structures were used, including some with negative Poisson's ratio. The bending response was investigated and compared with beam-theory predictions. Most of the cores evaluated had sufficient shear stiffness that the bending compliance was relatively high and dominated by the face sheets. Two of the core configurations were “soft” and exhibited behavior governed by core shear. The relative dimensions of the cores evaluated in this study were far from those that minimize the weight, because of fabrication constraints. The development of an ability to make high-aspect ratio cores is an essential next step toward producing structurally efficient, lightweight microscale beams and panels.

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