Wool � Determination of fibre length distribution parameters � Capacitance method

2020 ◽  
Keyword(s):  
Length Distribution ◽  
Fibre Length ◽  
Capacitance Method ◽  
Distribution Parameters

scholarly journals Estimation of Length of Node-to-Node Paths Distribution in the Global Network

2020 ◽  
Vol 27 (1) ◽  
pp. 6-21
Author(s):  
Alexandra I. Kononova ◽  
Alexey V. Gorodilov
Keyword(s):  
Path Length ◽  
Length Distribution ◽  
Global Network ◽  
Estimation Of Parameters ◽  
Measurement Results ◽  
Distribution Parameters ◽  
Path Lengths ◽  
Skewness And Kurtosis ◽  
Selection Of

The experiment aimed at finding a distribution of path lengths between nodes in the global network and an estimation of parameters of that distribution is described.In particular, the method of measurement of path length with traceroute utility of the GNU/Linux system and limitations on the selection of nodes imposed by traceroute are described. ‘e measurement results are provided and high values of skewness and kurtosis for all resulting distributions are noted. Simulation model of this experiment was developed to test the experiment validity in the determination of distribution parameters in the global network. This model is also described. It is shown that high values of skewness and kurtosis of the measured distributions are not the result of the measurement technique, therefore the global network could not be described by the Barabasi–Albert ´ model. Several most viable hypotheses explaining diffierences in skewness and kurtosis of experimentally obtained pathlength distribution estimations and values derived from the Barabasi–Albert model are listed. Results of diffierent hypotheses ´ simulations are provided. It is shown that the most fitting hypothesis is that definitive influence on skewness and kurtosis of path-length distribution estimations is caused by the quasi pre-fractal structure of the global network.

scholarly journals Determination of Interfacial Shear Strength and Critical Fibre Length in Injection Moulded Flax Fibre Reinforced Polypropylene

2001 ◽  
Vol 10 (6) ◽  
pp. 096369350101000 ◽  
Author(s):  
T. Aurich ◽  
G. Mennig
Keyword(s):  
Shear Strength ◽  
Interfacial Shear Strength ◽  
Length Distribution ◽  
Fibre Length ◽  
Interfacial Shear ◽  
Natural Fibres ◽  
Composite Strength ◽  
Strength Data ◽  
Characteristic Values

Natural fibres are becoming more and more important as reinforcement in polymer based materials. Knowledge of interfacial shear strength and critical fibre length is important for the assessment of the mechanical properties of the composite and the estimation of the resultant fibre length distribution. This is particularly true for injection moulded reinforced thermoplastic parts. Because of the problems with the preparation of micro-mechanical specimens from natural fibres and thermoplastics, in the presented paper the characteristic values are calculated from macroscopic composite strength data.

Quantitative Determination of the Microstructure and Composition of Crosslinked Rubber Blends

1997 ◽  
Vol 70 (2) ◽  
pp. 222-230 ◽  
Author(s):  
Emma Thorn-Csányi ◽  
Hans-Detlef Luginsland
Keyword(s):  
Carbon Black ◽  
Quantitative Determination ◽  
Length Distribution ◽  
Polymer Degradation ◽  
Mineral Oil ◽  
Sequence Length ◽  
Analytic Method ◽  
Rubber Blends ◽  
Different Types

Abstract Intermolecular metathetic polymer degradation opens up an analytic method to identify the quality and quantity of the components in blends of different types of rubber even if they are crosslinked and filled with carbon black, mineral oil, etc.. Furthermore the amount of soluble and insoluble additives can be determined. Moreover, metathetic degradation allows for determination of detailed information about the chemical microstructure (e.g. sequence length distribution of 1,2-butadiene and styrene units) of the rubbers used. This method is suitable for analysis of rubber components in tires.

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