Vibration Characteristics of Automotive Composite Materials

2009 ◽  
pp. 133-133-18 ◽  
Author(s):  
RF Gibson ◽  
A Yau ◽  
DA Riegner
Keyword(s):  
Composite Materials ◽  
Vibration Characteristics

Experimental Research on Thermal-Vibration for Composite Trilaminated Wing Structure

2014 ◽  
Vol 1061-1062 ◽  
pp. 799-805
Author(s):  
Shou Gen Zhao ◽  
Yue Wu Wang ◽  
Da Fang Wu ◽  
Ying Pu ◽  
Lan Shang
Keyword(s):  
Composite Materials ◽  
High Speed ◽  
Test System ◽  
Vibration Characteristics ◽  
Thermal Vibration ◽  
Vibration Test ◽  
Flight Vehicle ◽  
Metallic Materials ◽  
Wing Structures ◽  
Wing Structure

The wing structures of long-range, high-speed flight vehicles bear vibration during the flying time. The high temperatures caused by aerodynamic heating can greatly change the elasticity properties of the materials in a high-speed flight vehicle, leading to an alteration in the vibration characteristics of high-speed flight vehicle structures. In this paper, the high-temperature environment test system and vibration test system were combined to conduct a thermal-vibration test for the composite trilaminated wing structure that comprised composite materials and metallic materials. The vibration characteristics of the composite trilaminated wing structure, such as natural frequency and vibration mode, were obtained in 200°C, 300 oC and 400 oC environments. The results provide an important basis for the dynamic characteristics analysis and safety and reliablity design of wing structures comprised composite materials and metallic materials under a thermal-vibration environment.

A Study on the Vibration Characteristics of Symmetry and Asymmetry Laminated Composite Materials by Using ESPI

2007 ◽  
Vol 353-358 ◽  
pp. 2366-2370
Author(s):  
Kyung Min Hong ◽  
Young June Kang ◽  
Nak Kyu Park ◽  
Weon Jae Ryu
Keyword(s):  
Composite Materials ◽  
Real Time ◽  
Optical Measurement ◽  
Speckle Pattern ◽  
Laminated Composite ◽  
Vibration Characteristics ◽  
Electronic Speckle Pattern Interferometry ◽  
Full Field ◽  
Reinforced Plastics ◽  
Laminated Composite Materials

The ESPI (Electronic Speckle Pattern Interferometry) is a real-time, full-field, non-destructive optical measurement technique. In this study, ESPI was proposed for the purpose of vibration analysis for new and composite materials. Composite materials have various complicated characteristics according to the materials, orientations, stacking sequences of the ply and boundary conditions. Therefore, it was difficult to analyze composite materials. For efficient use of composite materials in engineering applications the dynamic behavior (i.e., natural frequencies and nodal patterns) should be informed. With the use of Time-Average ESPI, one could analyze vibration characteristics of composite material by real time easily. We manufactured two kinds of laminated composites (i.e., symmetry and asymmetry) which were consisted of CFRP (Carbon Fiber Reinforced Plastics) and the shape of the test piece was of rectangular form.

Effect of Vibration Characteristics for Carbon Fiber Composite Materials on Musical Instruments Making

2014 ◽  
Vol 508 ◽  
pp. 66-69
Author(s):  
Min Lv ◽  
Ji Li Sun
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Layer Structure ◽  
Fiber Composite ◽  
Single Layer ◽  
Vibration Characteristics ◽  
Material Structure ◽  
Carbon Fiber Composite ◽  
Fiber Composite Material

Carbon fiber and its composite materials have a series of excellent properties such as high specific strength, high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance and small thermal expansion coefficient, which can be widely applied to musical instrument manufacturing field. This paper introduces the structure and performance of carbon fiber, and mainly introduces the latest application of carbon fiber composite material, and the effect of vibration characteristics on musical performance. This paper also puts forward that for instrument design material substitutes the use of carbon fiber composite material structure of 2 layers and 3 layers structure should be considered, and the single layer structure is not feasible.

scholarly journals Vibration characteristics investigation of sandwich composite materials of uni-directional and twill carbon fibers

2021 ◽  
Vol 18 ◽  
pp. 100230
Author(s):  
Nur Mufidatul Ula ◽  
Yusuf Giri Wijaya ◽  
Muksin ◽  
P.P.P. Mikhael Gilang ◽  
Nurul Lailatul Muzayadah ◽  
...  
Keyword(s):  
Composite Materials ◽  
Carbon Fibers ◽  
Vibration Characteristics ◽  
Sandwich Composite

Comparative Microstructures of Ion Milled and Electrochemically Thinned Composite Materials

1974 ◽  
Vol 32 ◽  
pp. 546-547
Author(s):  
R.R. Russell
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Composite Materials ◽  
Great Difficulty ◽  
Ion Milling ◽  
Transmission Electron ◽  
Ion Damage ◽  
Intermetallic Composite

Transmission electron microscopy of metallic/intermetallic composite materials is most challenging since the microscopist typically has great difficulty preparing specimens with uniform electron thin areas in adjacent phases. The application of ion milling for thinning foils from such materials has been quite effective. Although composite specimens prepared by ion milling have yielded much microstructural information, this technique has some inherent drawbacks such as the possible generation of ion damage near sample surfaces.

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