Analysis of the embedded cell method in 1D for the numerical homogenization of metal-ceramic composite materials

2018 ◽  
Vol 24 (1) ◽  
pp. 71-80
Author(s):  
Wolf-Patrick Düll ◽  
Bastian Hilder ◽  
Guido Schneider

Abstract In this paper, we analyze the embedding cell method, an algorithm which has been developed for the numerical homogenization of metal-ceramic composite materials. We show the convergence of the iteration scheme of this algorithm and the coincidence of the material properties predicted by the limit with the effective material properties provided by the analytical homogenization theory in two situations, namely for a one-dimensional linear elasticity model and a simple one-dimensional plasticity model.

Author(s):  
Yu. A. Balinova ◽  
D. V. Graschenkov ◽  
A. A. Shavnev ◽  
V. G. Babashov ◽  
A. S. Chaynikova ◽  
...  

This paper describes achievements of the All-Russian Scientific Research Institute of Aviation Materials in the field of creating high-temperature heat-shielding, ceramic and metal-ceramic composite materials. The advantages and prospects of applying the developed materials in the manufacturing of structural elements of aircraft and friction joints are discussed. The synthesis features and basic properties of metal-ceramic composite materials based on light alloys, refractory metal matrices, ceramic composite materials for use in heavily loaded structural elements of modern aircraft are presented. The main achievements in the field of heat-shielding materials based on refractory oxide fibres are presented, along with their properties and application in new-generation aircrafts.


2018 ◽  
Vol 284 ◽  
pp. 101-108
Author(s):  
M.A. Fedosov ◽  
O.B. Butusov

The cluster structure of microphotographs of the metal-ceramic composite materials surface samples has been analyzed. Cluster analysis has been performed with the help of a self-organizing feature map in a four-dimensional feature space, built from textural visualizations of a microphotograph. As a result of our studies, two types of cluster structure elements were found: small-scale and large-scale clusters. The assumption has been made that two main features of the deformation graph can be associated with the destruction of the cluster elements of both kinds. As a result of multifractal analysis, it was found out that the difference in technology does not significantly affect the multifractal spectra, but it proves to be significant for multifractal dimensions.


2012 ◽  
Vol 14 (3) ◽  
pp. 394-400 ◽  
Author(s):  
Antonello Marocco ◽  
Gianfranco Dell’Agli ◽  
Serena Esposito ◽  
Michele Pansini

2020 ◽  
Author(s):  
Norbert Ackerl ◽  
Alexander Hansen Bork ◽  
Roland Hauert ◽  
Eike Müller ◽  
Markus Rottmar

Ceramic composite materials are increasingly used in dental restoration procedures, but current ceramic surface designs do not yet achieve the osseointegration potential of state-of-the-art titanium implants. Rapid bone tissue integration of an implant is greatly dependent on its surface characteristics, but the material properties of ceramic composite materials interfere with classical surface modification techniques. Here, ultra-short pulsed laser machining, which offers a defined energy input mitigating a heat-affected zone, is explored for surface modification of ceramic composites. Inspired by surface textures of clinically relevant titanium implants, dual roughness surfaces are laser patterned. Raman mapping reveals a negligible effect of ultra-short pulsed laser ablation on material properties, but a laser-induced change in the wetting state is revealed by static contact angle measurements. Laser patterning of surfaces also influences blood coagulation, but not the attachment and spreading of osteoblastic cells. The presented laser machining approach thus allows the introduction of a rational surface design on ceramic composites, holding great promise for the manufacturing of ceramic implants.


1992 ◽  
Vol 147-148 ◽  
pp. 594-597 ◽  
Author(s):  
J. Petrullat ◽  
S. Ray ◽  
U. Schubert ◽  
G. Guldner ◽  
Ch. Egger ◽  
...  

2019 ◽  
Vol 118 (4) ◽  
pp. 159-168 ◽  
Author(s):  
Alejandro Carrasco-Pena ◽  
Ryan Jordan ◽  
Jessica Dieguez ◽  
Arturo Coronado-Rodríguez ◽  
Veli B. Ozdemir ◽  
...  

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