Core material effect on wave number and vibrational damping characteristics in carbon fiber sandwich composites

2012 ◽  
Vol 72 (13) ◽  
pp. 1493-1499 ◽  
Author(s):  
James Sargianis ◽  
Jonghwan Suhr
Keyword(s):  
Carbon Fiber ◽  
Core Material ◽  
Wave Number ◽  
Sandwich Composites ◽  
Damping Characteristics ◽  
Vibrational Damping

Damage behavior of potting materials in sandwich composites with pinned joints

2015 ◽  
Vol 22 (5) ◽  
Author(s):  
Cesim Atas ◽  
Alper Basmaci
Keyword(s):  
Core Material ◽  
Sandwich Composite ◽  
Composite Panels ◽  
Sandwich Composites ◽  
Resin Infusion ◽  
Damage Behavior ◽  
Mechanical Joints ◽  
The Core ◽  
Bottom Face ◽  
Infusion Technique

AbstractThe damage behavior of the potting materials around a pinhole, being used in the mechanical joints of sandwich composites, is investigated experimentally. The sandwich composite panels used in the tests were manufactured by the vacuum-assisted resin infusion technique. Each of the top and bottom face sheets of the panels consisted of two woven E-glass/epoxy layers. As the core material, PVC foam (AIREX

Fabrication of carbon nanotubes dispersed woven carbon fiber/epoxy composites and their damping characteristics

2012 ◽  
Vol 47 (8) ◽  
pp. 1045-1054 ◽  
Author(s):  
Hee Chul Kim ◽  
Eun Ho Kim ◽  
In Lee ◽  
Joon Hyung Byun ◽  
Byung Sun Kim ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Fiber ◽  
Epoxy Composites ◽  
Damping Characteristics ◽  
Carbon Fiber Epoxy

The Theoretical Prediction and Experimental Verification of Modal Parameters for Carbon Fiber Reinforced Composites with Sandwich Structure

2011 ◽  
Vol 194-196 ◽  
pp. 2415-2419
Author(s):  
Guo Li Zhang ◽  
Ya Nan Wang ◽  
Jia Lu Li ◽  
Guang Wei Chen ◽  
Li Chen ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Carbon Fibre ◽  
Rectangular Plate ◽  
Natural Frequency ◽  
Flexural Vibration ◽  
Woven Fabric ◽  
Core Material ◽  
Sandwich Composite ◽  
Modal Shape ◽  
Modal Test

A innovative structure of sandwich composite rectangular plate with dimensions of 350 ×83.5×9.5mm was designed, it was made of unidirectional prepreg of carbon fibre and woven fabric prepreg of carbon fiber as face materials and paulownia as core material by hand lay-up performing and press molding technology for investigating the dynamic performance such as natural frequency and modal shapes. Based on testing the in-plane and out-plane mechanical properties of composite samples reinforced by unidirectional carbon fibre and carbon fiber woven fabric, a ANSYS FEA dynamic modeling was developed. According to the impulse response modal test method, a modal test system was established. The natural frequency test results showed that the minimum natural frequency of sandwich composite rectangular plate is about 616.45Hz which is higher about 27.5% than that of aluminum rectangular plate reinforced by carbon. The modal experiment indicated that the 1st modal shape, 2nd modal shape, 3rd modal shape and 4th modal shape of the sandwich composite rectangular plate were torsional vibration, flexural vibration shape, torsional flexural vibration and double-flexural vibration separately. It was found the calculating precision of FEA dynamic predication was very high, the dynamic predicating results by FEA could provide fundamental data to the optimal design high speed reciprocating sandwich composite rectangular parts.

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