scholarly journals Transverse cracking in metal/ceramic composites with lamellar microstructure

2016 ◽  
Vol 2 ◽  
pp. 3377-3384 ◽  
Author(s):  
Maria Kashtalyan ◽  
Romana Piat ◽  
Igor Guz
Keyword(s):  
Lamellar Microstructure ◽  
Ceramic Composites ◽  
Transverse Cracking ◽  
Metal Ceramic

Analysis of multiple cracking in metal/ceramic composites with lamellar microstructure

2015 ◽  
Vol 86 (1-2) ◽  
pp. 177-188 ◽  
Author(s):  
M. Kashtalyan ◽  
Y. Sinchuk ◽  
R. Piat ◽  
I. Guz
Keyword(s):  
Lamellar Microstructure ◽  
Ceramic Composites ◽  
Multiple Cracking ◽  
Metal Ceramic

Nonlinear homogenization of metal-ceramic composites with lamellar microstructure

PAMM ◽  
2011 ◽  
Vol 11 (1) ◽  
pp. 545-546 ◽  
Author(s):  
Romana Piat ◽  
Yuriy Sinchuk
Keyword(s):  
Lamellar Microstructure ◽  
Ceramic Composites ◽  
Metal Ceramic ◽  
Nonlinear Homogenization

scholarly journals Inelastic behavior of the single domain of metal-ceramic composites with lamellar microstructure

PAMM ◽  
2011 ◽  
Vol 11 (1) ◽  
pp. 285-286 ◽  
Author(s):  
Yuriy Sinchuk ◽  
Romana Piat ◽  
Siddhartha Roy ◽  
Jens Gibmeier ◽  
Alexander Wanner
Keyword(s):  
Lamellar Microstructure ◽  
Ceramic Composites ◽  
Single Domain ◽  
Inelastic Behavior ◽  
Metal Ceramic

Residual stresses in novel metal/ceramic composites exhibiting a lamellar microstructure

2009 ◽  
Vol 24 (S1) ◽  
pp. S59-S64 ◽  
Author(s):  
Siddhartha Roy ◽  
Jens Gibmeier ◽  
Alexander Wanner
Keyword(s):  
Residual Stresses ◽  
Porous Ceramic ◽  
Lamellar Microstructure ◽  
Cost Effective ◽  
High Energy ◽  
Ceramic Composites ◽  
Aluminum Silicon Alloy ◽  
Spatially Resolved ◽  
Production Route ◽  
Metal Ceramic

The aim of this study is to analyze the mechanics of a new class of metal/ceramic composites on a mesoscopic length scale. These composites are produced by melt infiltration of porous ceramic preforms produced by freeze casting and subsequent sintering. This production route has a high application potential since it offers a cost-effective way to obtain composites with ceramic content in the 30 to 70 vol.%range. The as-produced material exhibits a hierarchical domain structure with each domain composed of alternating layers of metallic and ceramic lamellae. Residual stresses present in all phases of the composite produced by infiltrating alumina preforms with a eutectic aluminum-silicon alloy have been measured. Integral as well as spatially resolved measurements were carried out on single-domain samples at the high-energy, energy-dispersive diffraction (EDDI) beamline at the synchrotron radiation source BESSY (Berlin, Germany). Results show that strongly fluctuating residual stresses are introduced by the production process, which can be rationalized by taking into account the thermal expansion mismatch of alloy and preform.

Influence of the Crack Widening on the Transverse Cracking in Lamellar Metal-Ceramic Composites

2017 ◽  
Vol 754 ◽  
pp. 83-86 ◽  
Author(s):  
Romana Piat ◽  
Maria Kashtalyan ◽  
Igor Guz
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Field ◽  
Ceramic Composites ◽  
Ceramic Layer ◽  
Shear Lag ◽  
Transverse Cracks ◽  
Transverse Cracking ◽  
Metal Ceramic ◽  
Element Method

Stress field in the ceramic layer containing multiple transverse cracks is determined using a modified 2-D shear lag approach and a finite element method.

Material homogenization of metal-ceramic composites by NTFA

2013 ◽  
Author(s):  
E. Schnack ◽  
Y. Zhu ◽  
A. M. Rahman
Keyword(s):  
Ceramic Composites ◽  
Metal Ceramic

scholarly journals Tough metal-ceramic composites with multifunctional nacre-like architecture

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Erik Poloni ◽  
Florian Bouville ◽  
Christopher H. Dreimol ◽  
Tobias P. Niebel ◽  
Thomas Weber ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Sol Gel ◽  
Ceramic Composites ◽  
High Fracture Toughness ◽  
Processing Route ◽  
High Fracture ◽  
Metal Ceramic ◽  
Attractive Option ◽  
Brick And Mortar ◽  
Robotic Applications

AbstractThe brick-and-mortar architecture of biological nacre has inspired the development of synthetic composites with enhanced fracture toughness and multiple functionalities. While the use of metals as the “mortar” phase is an attractive option to maximize fracture toughness of bulk composites, non-mechanical functionalities potentially enabled by the presence of a metal in the structure remain relatively limited and unexplored. Using iron as the mortar phase, we develop and investigate nacre-like composites with high fracture toughness and stiffness combined with unique magnetic, electrical and thermal functionalities. Such metal-ceramic composites are prepared through the sol–gel deposition of iron-based coatings on alumina platelets and the magnetically-driven assembly of the pre-coated platelets into nacre-like architectures, followed by pressure-assisted densification at 1450 °C. With the help of state-of-the-art characterization techniques, we show that this processing route leads to lightweight inorganic structures that display outstanding fracture resistance, show noticeable magnetization and are amenable to fast induction heating. Materials with this set of properties might find use in transport, aerospace and robotic applications that require weight minimization combined with magnetic, electrical or thermal functionalities.

Processing and Elastic Property Characterization of Porous SiC Preform for Interpenetrating Metal/Ceramic Composites

2012 ◽  
Vol 95 (10) ◽  
pp. 3078-3083 ◽  
Author(s):  
Siddhartha Roy ◽  
Karl Günter Schell ◽  
Ethel Claudia Bucharsky ◽  
Pascal Hettich ◽  
Stefan Dietrich ◽  
...  
Keyword(s):  
Elastic Property ◽  
Ceramic Composites ◽  
Metal Ceramic ◽  
Porous Sic ◽  
Property Characterization

Sol-gel control of the micro/nanostructure of functional ceramic-ceramic and metal-ceramic composites

1998 ◽  
Vol 13 (4) ◽  
pp. 803-811 ◽  
Author(s):  
Philippe Colomban
Keyword(s):  
Sol Gel ◽  
Ceramic Composites ◽  
Matrix Interface ◽  
Specific Chemical ◽  
Fine Powders ◽  
Metal Ceramic ◽  
Long Life ◽  
Fiber Matrix Interface ◽  
3D Composite ◽  
Functional Ceramic

The problems encountered to tailor simultaneously various specific chemical or physical properties are discussed. Selected polymeric precursors used in association with fine powders allow the control of the nano/microstructure of composites and hence the preparation of functional (FGM) and hierarchical reinforced (HRC) composites, making it possible to combine several kinds of fibers, interphases, and matrices in the same composite (hot microwave absorbent), to control the fiber/matrix interface (long life times composites), to achieve net-shape sintering of 3D composite matrices, and to prepare thick films of metal-ceramic composites with tailored microwave absorption (radar stealthiness).

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