МЕТОД БИНАРИЗАЦИИ КАК ОСНОВА СТРУКТУРНОГО АНАЛИЗА ПОВЕРХНОСТНОЙ ПЛОТНОСТИ НЕТКАНОГО НАПОЛНИТЕЛЯ КОМПОЗИТНОГО МАТЕРИАЛА

2021 ◽  
Vol 1 (100) ◽  
pp. 9-19
Author(s):  
SERGEY V. ERSHOV ◽  
IVAN A. SUVOROV ◽  
SERGEY O. KOZHEVNIKOV ◽  
VIKTOR B. KUZNETSOV ◽  
EVGENY N. KALININ
Keyword(s):  
Composite Material ◽  
Digital Image ◽  
Surface Density ◽  
Analytical Study ◽  
Nonwoven Material ◽  
Average Density ◽  
External Factors ◽  
Model Output ◽  
Algorithmic Approach ◽  
Binarization Method

The article formulates an algorithmic approach to the binarization method and shows the effectiveness of its implementation in relation to the analytical study on the surface density of a nonwoven structure, used as a reinforcing base of a composite materialaccording to the digital image of its surface. This method is considered to be the basis for determining the influence of external factors on the verification parameters of the model output of the average density indicatorsin the structure of the nonwoven material and predicting the structural properties of the composite material obtained on its basis.

An analytical study on the nonlinear free vibration of nanoscale beams incorporating surface density effects

2012 ◽  
Vol 43 (8) ◽  
pp. 2893-2897 ◽  
Author(s):  
R. Nazemnezhad ◽  
M. Salimi ◽  
Sh. Hosseini Hashemi ◽  
P. Asgharifard Sharabiani
Keyword(s):  
Free Vibration ◽  
Surface Density ◽  
Analytical Study ◽  
Nonlinear Free Vibration ◽  
Density Effects

scholarly journals Using the conservative nature of fresh leaf surface density to measure foliar area

2014 ◽  
Vol 28 (4) ◽  
pp. 413-421
Author(s):  
Omar S. Castillo ◽  
Esther M. Zaragoza ◽  
Carlos J. Alvarado ◽  
Maria G. Barrera ◽  
Nabanita Dasgupta-Schubert
Keyword(s):  
Image Analysis ◽  
Leaf Area ◽  
Digital Image ◽  
Surface Density ◽  
Digital Image Analysis ◽  
Leaf Surface ◽  
Area Measurement ◽  
Fresh Leaf ◽  
The Masses

Abstract For a herbaceous species, the inverse of the fresh leaf surface density, the Hughes constant, is nearly conserved. We apply the Hughes constant to develop an absolute method of leafarea measurement that requires no regression fits, prior calibrations or oven-drying. The Hughes constant was determined in situ using a known geometry and weights of a sub-set obtained from the fresh leaves whose areas are desired. Subsequently, the leaf-areas (at any desired stratification level), were derived by utilizing the Hughes constant and the masses of the fresh leaves. The proof of concept was established for leaf-discs of the plants Mandevilla splendens and Spathiphyllum wallisii. The conservativeness of the Hughes constant over individual leaf-zones and different leaftypes from the leaves of each species was quantitatively validated. Using the globally averaged Hughes constant for each species, the leaf-area of these and additional co-species plants, were obtained. The leaf-area-measurement-by-mass was cross-checked with standard digital image analysis. There were no statistically significant differences between the leaf-area-measurement-by-mass and the digital image analysis measured leaf-areas and the linear correlation between the two methods was very good. Leaf-areameasurement- by-mass was found to be rapid and simple with accuracies comparable to the digital image analysis method. The greatly reduced cost of leaf-area-measurement-by-mass could be beneficial for small agri-businesses in developing countries.

Analytical study of the interface in fibre-reinforced 2D composite material

2011 ◽  
Vol 27 (1) ◽  
pp. 90-97 ◽  
Author(s):  
Igor V. Andrianov ◽  
Jan Awrejcewicz ◽  
Dieter Weichert
Keyword(s):  
Composite Material ◽  
Analytical Study
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