Ceramic Microstructure-Property Fractal-Diffractal Calculus : Static Synergetics Yield Optimization During Processing Via Real–Time Q.A.and Interactive Q.C

1986 ◽  
Vol 73 ◽  
Author(s):  
Edward Siegel

ABSTRACTCeramic microstructure-property relationships dominate any and all attempts at“better ceramics through chemistry”. Required is some universal calculus to allow analytic, universal, reversible scalable computation of one from the other. Static Synergetics universality-principle provides such a flexible versatile tool, heretofore not available. It is a reexpression of the very basic three laws of thermodynamics into r-,k-,and w-domainsthe equivalence of(symmetry-breaking/defect) Pattern-recognition(the “structure”) to signal-processing(the frequency-dependent FM) properties/ Functions. More basically, it is a manifestation of Noether's theoremthe basis of mechanics and orgin of the energy continuity equation that is the thermodynamic first law. Such an algorithm, the”software”of yield optimization(quality and quantity) real-time Q.A. and(in parallel with a specificity dominated process- model)interactive Q.C.requires as “hardware”produced input the small-angle-scattering(SAS)dominated diffraction-pattern/static structure factor SSAS(k) or Fourier transform r-domain Pattern/ photomicrograph-recognition imaging(of processing-introduced property-detrimental defects(heterogeneity heirarchy)). Output are universal FM:I/f flicker(voltage and/or current)noise power spectrum, signal-to-noise ratio over dynamic rangemulti-level system dominated anomalous low temperature/frequency thermalracoustic. properties, and 1/f relaxation response susceptibility polarization catastrophe derived dielectric, electrical, optical, noise, viscoelastic/mechanicalmagnetic,...property Functions. Input can be the ubiquitous,...universal Mandelbrot fractals,dominating ceramics;output(and internal)Functions are Berry-Nye-Jakeman wdomain diffractals,dominating all properties universally.How and Why it works are detailed exactly;universality, reversibility and scalability are analytically insured for self-similar(or selfaffine) fractal scaling-relation Pattern-recognition input;approximate. deviations from universal Functions output obtains from less than perfect mathematically ideal fractal scaling-relation Pattern-recognition input.Static Synergetics provides a new practical use for external radiation small-angle-scattering(SAS) diffraction-pattern/static structure factor measurements in ceramic material microstructure-property relationships during processing

1985 ◽  
Vol 48 ◽  
Author(s):  
Edward Siegel

ABSTRACTThe ability of Static Synergetios,the universal,reversible,scalable mathematical algorithm/(used as an) experimental model, connecting external radiation small-angle-scattering diffraction-pattern/static structure factor SSAS (k),dominated by defect heterogeneities/clumps/clusters,to electronic (magniic,mechanical) complex,frequency-dependent electrical,dielectric, noise,optical…Function properties,can be enhanced by utilizing a comparison/difference of bulk transmission versus surface specular/glancing/grazing incidence small-angle-scattering diffraction-patterns.


2000 ◽  
Vol 276-278 ◽  
pp. 369-370 ◽  
Author(s):  
G. Meier ◽  
U. Pawelzik ◽  
W. Schweika ◽  
W. Kockelmann

2014 ◽  
Vol 21 (7) ◽  
pp. 073704 ◽  
Author(s):  
A. E. Davletov ◽  
L. T. Yerimbetova ◽  
Ye. S. Mukhametkarimov ◽  
A. K. Ospanova

2004 ◽  
Vol 350 (1-3) ◽  
pp. E1067-E1069
Author(s):  
M Celli ◽  
F Formisano ◽  
E Guarini ◽  
R Magli ◽  
M Zoppi ◽  
...  

1999 ◽  
Vol 32 (2) ◽  
pp. 197-209 ◽  
Author(s):  
B. Weyerich ◽  
J. Brunner-Popela ◽  
O. Glatter

The indirect Fourier transformation (IFT) is the method of choice for the model-free evaluation of small-angle scattering data. Unfortunately, this technique is only useful for dilute solutions because, for higher concentrations, particle interactions can no longer be neglected. Thus an advanced technique was developed as a generalized version, the so-called generalized indirect Fourier transformation (GIFT). It is based on the simultaneous determination of the form factor, representing the intraparticle contributions, and the structure factor, describing the interparticle contributions. The former can be determined absolutely free from model assumptions, whereas the latter has to be calculated according to an adequate model. In this paper, various models for the structure factor are compared,e.g.the effective structure factor for polydisperse hard spheres, the averaged structure factor, the local monodisperse approximation and the decoupling approximation. Furthermore, the structure factor for polydisperse rod-like particles is presented. As the model-free evaluation of small-angle scattering data is an essential point of the GIFT technique, the use of a structure factor without any influence of the form amplitude is advisable, at least during the first evaluation procedure. Therefore, a series of simulations are performed to check the possibility of the representation of various structure factors (such as the effective structure factor for hard spheres or the structure factor for rod-like particles) by the less exact but much simpler averaged structure factor. In all the observed cases, it was possible to recover the exact form factor with a free determined parameter set for the structure factor. The resulting parameters of the averaged structure factor have to be understood as apparent model parameters and therefore have only limited physical relevance. Thus the GIFT represents a technique for the model independent evaluation of scattering data with a minimum ofa prioriinformation.


2019 ◽  
Vol 1252 ◽  
pp. 012003
Author(s):  
Devilal Dahal ◽  
Raymond Atta-Fynn ◽  
S. R. Elliott ◽  
Parthapratim Biswas

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