scholarly journals Design and Analysis of Sandwich Composite Beam

2016 ◽  
Vol V5 (08) ◽  
Author(s):  
B Durga Prasad ◽  
R Pallavi Reddy ◽  
Keyword(s):  
Composite Beam ◽  
Sandwich Composite

scholarly journals Hygro-Thermo-Mechanical Responses of Balsa Wood Core Sandwich Composite Beam Exposed to Fire

Processes ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 103 ◽  
Author(s):  
Luan TranVan ◽  
Vincent Legrand ◽  
Pascal Casari ◽  
Revathy Sankaran ◽  
Pau Loke Show ◽  
...  
Keyword(s):  
Composite Beam ◽  
Cone Calorimeter ◽  
Mechanical Test ◽  
Sandwich Composite ◽  
Test Device ◽  
Balsa Wood ◽  
Three Point Bending ◽  
Mechanical Responses ◽  
Loss Kinetic ◽  
Composite Skins

In this study, the hygro–thermo–mechanical responses of balsa core sandwich structured composite was investigated by using experimental, analytical and numerical results. These investigations were performed on two types of specimen conditions: dry and moisture saturation sandwich composite specimens that are composed of E-glass/polyester skins bonded to a balsa core. The wet specimens were immersed in distilled water at 40 °C until saturated with water. The both dry and wet sandwich composite specimens were heated by fire. The mass loss kinetic and the mechanical properties were investigated by using a cone calorimeter following the ISO 5660 standard and three-point bending mechanical test device. Experimental data show that the permeability and fire resistance of the sandwich structure are controlled by two composite skins. Obtained results allow us to understand the Hygro–Thermo–Mechanical Responses of the sandwich structured composite under application conditions.

Experimental and Numerical Investigation of Response of Sandwich Composite Beam Subjected to Low-Velocity Impact

2015 ◽  
Vol 732 ◽  
pp. 239-246 ◽  
Author(s):  
Tomáš Mandys ◽  
Vladislav Laš ◽  
Tomáš Kroupa ◽  
Robert Zemčík
Keyword(s):  
Composite Beam ◽  
Progressive Failure ◽  
Material Model ◽  
Low Velocity Impact ◽  
Elastic Behavior ◽  
Sandwich Composite ◽  
Low Velocity ◽  
Velocity Impact ◽  
Non Linear ◽  
Force Time

This paper deals with the progressive failure analysis of sandwich composite beam loaded with transversely low-velocity impact. A user defined material model was used for modeling of the non-linear orthotropic elastic behavior of composite skin. The non-linear behavior of foam core was modeled using Low-Density Foam material model. The numerical model was validated using performed experiment and the results in terms of deflection and contact force time dependencies are mutually compared.

Analysis of Damping Characteristics for Sandwich Beams with a Polyurea Viscoelastic Layer

2011 ◽  
Vol 374-377 ◽  
pp. 764-769 ◽  
Author(s):  
Ping Lu ◽  
Xu Dong Liu ◽  
Xue Qiang Ma ◽  
Wei Bo Huang
Keyword(s):  
Composite Beam ◽  
Laminated Composite ◽  
Dynamic Mechanical Properties ◽  
Vibration Damping ◽  
Sandwich Composite ◽  
Viscoelastic Layer ◽  
Sandwich Beams ◽  
Constrained Layer Damping ◽  
Damping Characteristics ◽  
Laminated Composite Beam

Constrained layer damping treatments such as sandwich beams are considered as the most efficient way of introducing vibration damping into a structure. The dynamic mechanical properties and damping behavior of a laminated sandwich composite beam inserted with a viscoelastic layer is investigated. A quantitative analysis of damping in the sandwich laminated composite beam has been conducted through the theoretical and experimental method. Traditional epoxy and new kind of polyurea viscoelastic layer are selected to analyze the damping properties. Results showed that the polyurea viscoelastic layer had good dumping capability. The effects of temperature, frequency of viscoelastic layer on vibration damping characteristics arc also discussed. They also demonstrate the great capability of laminated sandwich composites with embedded viscoelastic layer to considerably enhance structural damping.

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