Digital Image Analysis to Determine Pore Size Distribution of Nonwoven Fabrics

2006 ◽  
Author(s):  
Ludovic Kohel ◽  
Xianyi Zeng ◽  
Liqing Li
Keyword(s):  
Image Analysis ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Digital Image ◽  
Digital Image Analysis ◽  
Nonwoven Fabrics

scholarly journals Development of Needle-Punched Nonwoven Fabrics from Reclaimed Fibers for Air Filtration Applications

2014 ◽  
Vol 9 (1) ◽  
pp. 155892501400900 ◽  
Author(s):  
S. Sakthivel ◽  
Anban J.J. Ezhil ◽  
T. Ramachandran
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Air Permeability ◽  
Filtration Efficiency ◽  
Raw Material ◽  
Fine Tuning ◽  
Physical Parameters ◽  
Air Filtration ◽  
Nonwoven Fabrics

This paper reports an investigative study on the fabrication and measurement of the air permeability, mechanical properties, pore size distribution, and filtration efficiency of different nonwoven fabrics produced from reclaimed fibers by analytically changing the machine variables to manipulate the physical parameters of the nonwoven fabrics. Reclaimed fiber of cotton (60%) and polyester (40%) blend was used, so that the prospect of value addition to an inexpensive source of raw material could be explored. The changes in air permeability were interpreted in terms of fabric density profile and pore size distribution. The filtration parameters of filtration efficiency, dust holding capacity, and pressure drop were also calculated. Additionally, the effects of calendering on pore size and filtration properties were evaluated to discover the opportunity of fine-tuning and the performance of the filters. The outcome in this study reflected an overall development in all filtration characteristics due to the calendering operation.

Fully Automated Islet Cell Counter (ICC) for the Assessment of Islet Mass, Purity, and Size Distribution by Digital Image Analysis

2016 ◽  
Vol 25 (10) ◽  
pp. 1747-1761 ◽  
Author(s):  
Peter Buchwald ◽  
Andres Bernal ◽  
Felipe Echeverri ◽  
Alejandro Tamayo-Garcia ◽  
Elina Linetsky ◽  
...  
Keyword(s):  
Image Analysis ◽  
Size Distribution ◽  
Digital Image ◽  
Islet Cell ◽  
Digital Image Analysis ◽  
Islet Mass ◽  
Cell Counter

scholarly journals The validity of laser diffraction system to reproduce hydrometer results for grain size analysis in geotechnical applications

PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0245452
Author(s):  
Hamzah M. Beakawi Al-Hashemi ◽  
Omar S. Baghabra Al-Amoudi ◽  
Zain H. Yamani ◽  
Yassir M. Mustafa ◽  
Habib-ur-Rehman Ahmed
Keyword(s):  
Electron Microscopy ◽  
Grain Size ◽  
Image Analysis ◽  
Size Distribution ◽  
Digital Image ◽  
Digital Image Analysis ◽  
Laser Diffraction ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Distribution Method

The grain size analysis plays a significant role in any geotechnical study. The grain size analysis, by means of sieving, is usually used for coarse material of particle size > 75 μm. For the fine material; the sedimentation methods are frequently adopted (e.g., hydrometers). Other methods also exist such as electron microscopy, digital image analysis and laser diffraction. The fine geomaterials commonly undergo agglomeration which makes the recognition of individual grain size using digital image analysis or electron microscopy challenging. To facilitate and enhance the grain-size analysis, this study was conducted using the Laser Diffraction System (LDS). Seven samples with different nature (composition and texture) and sources were analyzed by hydrometer and LDS. For LDS, various factors were studied such as air pressure, sonication, dilution, refractive index, and distribution method (volume or number). The results were compared qualitatively and quantitatively based on soil classification systems, fractal dimensions, and other parameters. Furthermore, this study provided a novel criterion to determine which LDS distribution method (volume or number) is to be used depending on the Liquid Limit. A combined sieve-LDS system is recommended to obtain the entire grain size distribution. It is concluded that the LDS is a viable technique that can replace the time-consuming hydrometer method to assess the grain-size distribution.

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