Research on the Microstructure Fractal Characteristics of Copper Matrix Composites

2012 ◽  
Vol 271-272 ◽  
pp. 177-181
Author(s):  
Run Bo Ma ◽  
Shi Meng Xu ◽  
Jian Hua Du
Keyword(s):  
Fractal Dimension ◽  
Cross Section ◽  
Fractal Theory ◽  
Copper Matrix ◽  
Organizational Form ◽  
Matrix Composites ◽  
Experimental Conditions ◽  
Copper Matrix Composites ◽  
Distribution Laws ◽  
Fractal Characteristics

Through the analysis and research on the Microstructure of copper matrix composites, according to the fractal theory, calculated microstructure friction dimension of cross section and parallel pressed power side of copper matrix composites under different experimental conditions. The results show that, for parallel pressed power side, fractal dimension reflects the distribution laws of graphite in the sample, the fractal dimension is more larger, the organization chart is more complex, the distribution of graphite is more irregular, so the irregularity of graphite distribution can be described by fractal dimension, fractal dimension can be used as a characterization parameter of organizational form for copper matrix composites. Under the condition of virtually expanded sample，in the view that Sn,Zn and SiO2 is not changed respectively, and the sum of Cu and graphite is 85%,by use of linear regression model to estimate parallel pressed power side of microstructure fractal dimension of different composition in copper matrix composites.

Analysis and Research on the Microstructure Fractal Characteristics of the Copper Matrix Composites

2013 ◽  
Vol 690-693 ◽  
pp. 305-308 ◽  
Author(s):  
Run Bo Ma ◽  
Shi Meng Xu ◽  
Jian Hua Du
Keyword(s):  
Fractal Dimension ◽  
Cross Section ◽  
Material Characterization ◽  
Copper Matrix ◽  
Organizational Form ◽  
Matrix Composites ◽  
Experimental Conditions ◽  
Graphite Content ◽  
Copper Matrix Composites ◽  
Fractal Characteristics

Through the analysis and research on images of microstructure of the copper matrix composites, we calculated the fractal dimension of images of microstructure on cross section and parallel pressed power side under different experimental conditions. Meanwhile analyzed some statistics characteristics of fractal dimension. The results show that fractal dimension of graphite reflects the distribution, the dimension is more larger, the organization chart is more complex, the distribution of graphite is more irregular, so the irregular distribution of free graphite can be described by fractal dimension, fractal dimension can be used as a material characterization parameters of organizational form. Through analyses we can get that the fractal dimension of the materials on cross section and parallel pressed power side combining to normal distribution, and it changed with graphite content doesnt affect each other.

scholarly journals Arc erosion resistance of hybrid copper matrix composites reinforced with CNTs and micro-TiB2 particles

2021 ◽  
Vol 11 ◽  
pp. 1469-1479 ◽  
Author(s):  
Xiuhua Guo ◽  
Yubo Yang ◽  
Kexing Song ◽  
Li Shaolin ◽  
Feng Jiang ◽  
...  
Keyword(s):  
Erosion Resistance ◽  
Copper Matrix ◽  
Matrix Composites ◽  
Copper Matrix Composites ◽  
Arc Erosion ◽  
Tib2 Particles

Synthesis, characterization and forming behavior of hybrid copper matrix composites produced using powder metallurgy

2017 ◽  
Vol 108 (7) ◽  
pp. 586-591 ◽  
Author(s):  
Ilayaraja Karuppiah ◽  
Ranjith Kumar Poovaraj ◽  
Anandakrishnan Veeramani ◽  
Sathish Shanmugam ◽  
Ravichandran Manickam ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Copper Matrix ◽  
Matrix Composites ◽  
Copper Matrix Composites

scholarly journals Development of Back-calculation Model for Aggregate Gradation Determination Using Fractal Theory

2018 ◽  
Vol 159 ◽  
pp. 01006
Author(s):  
Bagus Hario Setiadji ◽  
Supriyono ◽  
Djoko Purwanto
Keyword(s):  
Fractal Dimension ◽  
Fractal Theory ◽  
Asphalt Mixture ◽  
Fractal Dimensions ◽  
Calculation Model ◽  
Careful Consideration ◽  
Upper And Lower Bounds ◽  
Aggregate Gradation ◽  
Fractal Characteristic ◽  
Fractal Characteristics

Several studies have shown that fractal theory can be used to analyze the morphology of aggregate materials in designing the gradation. However, the question arises whether a fractal dimension can actually represent a single aggregate gradation. This study, which is a part of a grand research to determine aggregate gradation based on known asphalt mixture specifications, is performed to clarify the aforementioned question. To do so, two steps of methodology were proposed in this study, that is, step 1 is to determine the fractal characteristics using 3 aggregate gradations (i.e. gradations near upper and lower bounds, and middle gradation); and step 2 is to back-calculate aggregate gradation based on fractal characteristics obtained using 2 scenarios, one-and multi-fractal dimension scenarios. The results of this study indicate that the multi-fractal dimension scenario provides a better prediction of aggregate gradation due to the ability of this scenario to better represent the shape of the original aggregate gradation. However, careful consideration must be observed when using more than two fractal dimensions in predicting aggregate gradation as it will increase the difficulty in developing the fractal characteristic equations.

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