High-speed moire´ photography for studying dynamic properties in carbon fiber composites

1998 ◽  
Vol 37 (2) ◽  
pp. 642 ◽  
Author(s):  
L. Gunnar Melin
Keyword(s):  
Carbon Fiber ◽  
High Speed ◽  
Dynamic Properties ◽  
Fiber Composites ◽  
Carbon Fiber Composites

Design of Special Ultrasonic Device in Composite Materials Processing

2014 ◽  
Vol 1027 ◽  
pp. 331-335
Author(s):  
Xiao Bo Wang ◽  
Chong Yang Zhao
Keyword(s):  
Carbon Fiber ◽  
Ultrasonic Vibration ◽  
Electrical Transport ◽  
High Speed ◽  
High Efficiency ◽  
Power Transmission ◽  
Fiber Composites ◽  
Carbon Fiber Composites ◽  
High Quality ◽  
Vibration Milling

According to the unique advantage of the ultrasonic vibration processing in brittle materials, a new processing method, combining ultrasonic vibration and high-speed milling, was presented in this paper, to investigate an adaptation of high-quality and efficient processing in carbon fiber composites. Based on vibration theory, the special ultrasonic vibration milling device suitable for high speed machining centers was designed. Taking into account of a range of issues existing in contact electrical transport under high-speed processing, the contactless induction power transmission system was developed, and the impacts of load, frequency, air gap size as well as the existence of compensation on the transmission performance was discussed. The study shows that carbon fiber composites processed under ultrasonic vibration with high speed, high quality and high efficiency are adapted. Keywords: ultrasonic vibration milling; carbon fiber composites; contactless induction; tool wear

Damping Properties of Vapor-Grown Carbon Fiber Composites

2000 ◽  
Author(s):  
Ioana C. Finegan ◽  
Gary G. Tibbetts ◽  
Ronald F. Gibson
Keyword(s):  
Carbon Fiber ◽  
Dynamic Properties ◽  
Fiber Composites ◽  
Dynamic Mechanical Properties ◽  
Short Fiber ◽  
Thermoplastic Composites ◽  
Carbon Fiber Composites ◽  
Fiber Aspect Ratio ◽  
Aspect Ratios ◽  
Injection Molded

Abstract The objective of this paper is to investigate analytically and experimentally the dynamic mechanical properties of vapor grown carbon fiber (VGCF)/thermoplastic composites. The experimental results show that, as predicted, very low fiber aspect ratios may produce significant improvements in damping. Since VGCF have submicron diameters and lengths, with a fiber aspect ratio, l/d = 19, good dynamic properties are obtained by using them as reinforcement in a thermoplastic. Fiber length distributions and orientation in the injection molded samples are determined by scanning electron microscopy (SEM). An analytical model based on the elastic-viscoelastic correspondence principle is developed to predict elastic properties in short fiber composites having a preferential fiber orientation in the direction of injection. The mechanical damping and storage modulus are analyzed experimentally by using a Dynamic Mechanic Analyzer (DMA).

scholarly journals Torsional and Tensile Dynamic Properties of Aromatic Polyimide and Polyamideimide-Carbon Fiber Composites

1977 ◽  
Vol 5 (1) ◽  
pp. 35-37 ◽  
Author(s):  
Hirotaro KAMBE ◽  
Masakatsu KOCHI ◽  
Rikio YOKOTA ◽  
Katsuya OIKAWA ◽  
Hiromichi GAN
Keyword(s):  
Carbon Fiber ◽  
Dynamic Properties ◽  
Fiber Composites ◽  
Carbon Fiber Composites ◽  
Aromatic Polyimide
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