Quality and performance assessments of drilling and punching in the hole-making process of a composite panel: A comparative study

2019 ◽  
pp. 211-226
Author(s):  
S. Norisam ◽  
A.B. Abdullah
Keyword(s):  
Comparative Study ◽  
Performance Assessments ◽  
Composite Panel ◽  
Hole Making ◽  
And Performance

Noise Reduction by Using Composite Plate

2008 ◽  
Vol 47-50 ◽  
pp. 1229-1232
Author(s):  
C.W. Chau ◽  
Y.S. Choy ◽  
Kin Tak Lau ◽  
Yang Liu
Keyword(s):  
Noise Reduction ◽  
Carbon Fibers ◽  
Side Branch ◽  
Bending Stiffness ◽  
Composite Panel ◽  
Expansion Chamber ◽  
Noise Abatement ◽  
High Tension ◽  
And Performance ◽  
Very High

The plate silencer1 which consists of an expansion chamber with two side branch cavities covered by a light panel can achieve a desirable noise reduction in broadband theoretically. The concept is similar to drum silencer2. To attain optimal noise reduction, either the membrane should be of minimal weight while retaining very high tension or the panel should be kept with very high bending stiffness that is dependent on its geometry and mechanical properties. To achieve such goal, various kinds of composite system such as carbon fibers or aluminum were mounted on light core foam. A design of the composite panel which can provide a reduction in panel weight as well as enhance the bending stiffness, is introduced in this project. Predictions of the new model are to be compared with the normal foam plate in the aspects of noise reflection capability and performance of noise abatement apart from the material properties.

On-orbit calibration and performance assessments of Terra and Aqua MODIS thermal emissive bands

2021 ◽  
Vol 15 (01) ◽  
Author(s):  
Xiaoxiong Xiong ◽  
Aisheng Wu ◽  
Tiejun Chang ◽  
Truman Wilson ◽  
Yonghong Li ◽  
...  
Keyword(s):  
Performance Assessments ◽  
And Performance
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