Modeling of damage in an mmc with lamellar microstructure

Romana Piat; Maria Kashtalyan; Igor Guz

doi:10.1002/9781119321811.ch18

Modeling of damage in an mmc with lamellar microstructure

Romana Piat
, Maria Kashtalyan
, Igor Guz

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

Abstract

This chapter describes the stress fields in a single‐domain sample of metal‐ceramic composite containing multiple cracks in the ceramic layer. The domain size and the lamellae spacing are functions of the freeze‐casting parameters, whereas the ceramic content of the preform depends upon the initial composition of the suspension. For small crack spacing, crack widening contributes to reduction of the maximum axial stress value at mid‐point between the cracks. Crack widening also changes the distribution of the shear stresses in the vicinity of the crack tip and the crack tip region. The influence of crack distances and crack widening on the stress distribution in metalceramic composites with lamellar microstructure was studied using analytical and FE methods. FE model predicted the development of the compressive zone in between the cracks for small distances between the cracks. For small crack spacing, crack widening contributes to reduction of the maximum axial stress value at mid‐point between the cracks. Material behaviour of the metallic and ceramic layers was modelled as elastic.

Original language	English
Title of host publication	Developments in Strategic Ceramic Materials II
Subtitle of host publication	A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
Editors	Waltraud M. Kriven, Jingyang Wang, Yanchun Zhou, Dongming Zhu, Gustavo K. Costa, Manabu Fukushima, Andrew Gyekenyesi
Publisher	American Ceramic Society
Pages	189-200
Number of pages	12
Volume	37
Edition	7
ISBN (Electronic)	9781119321811
ISBN (Print)	9781119040439, 9781119321781
DOIs	https://doi.org/10.1002/9781119321811.ch18
Publication status	Published - 1 Feb 2017
Event	Developments in Strategic Ceramic Materials II - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016 - Daytona Beach, United States Duration: 24 Jan 2016 → 29 Jan 2016

Publication series

Name	Ceramic Engineering and Science Proceedings
Publisher	The American Ceramic Society
ISSN (Electronic)	1940-6339

Conference

Conference	Developments in Strategic Ceramic Materials II - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
Country/Territory	United States
City	Daytona Beach
Period	24/01/16 → 29/01/16

Funding

The financial support of The Royal Society (UK) International Exchanges grant IE121116 and DFG (PI 785/1-2, PI 785/3-2) and Darmstadt University of Applied Sciences is gratefully acknowledged. We thank Dr. K. G. Schell, Prof. M. J. Hoffmann and Dr. R. Oberacker of the ceramics lab of the Institute for Applied Materials at Karlsruhe Institute of Technology for providing the alumina preforms and Dr. S. Roy for helpful discussions about damage process in MMCs.

Keywords

metal‐ceramic composite
ceramic layer
axial stress value
crack distances
multiple cracks

Access to Document

10.1002/9781119321811.ch18Licence: Unspecified

Cite this

Piat, R., Kashtalyan, M., & Guz, I. (2017). Modeling of damage in an mmc with lamellar microstructure. In W. M. Kriven, J. Wang, Y. Zhou, D. Zhu, G. K. Costa, M. Fukushima, & A. Gyekenyesi (Eds.), Developments in Strategic Ceramic Materials II: A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016 (7 ed., Vol. 37, pp. 189-200). (Ceramic Engineering and Science Proceedings). American Ceramic Society. https://doi.org/10.1002/9781119321811.ch18

Modeling of damage in an mmc with lamellar microstructure. / Piat, Romana; Kashtalyan, Maria; Guz, Igor.
Developments in Strategic Ceramic Materials II: A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016. ed. / Waltraud M. Kriven; Jingyang Wang; Yanchun Zhou; Dongming Zhu; Gustavo K. Costa; Manabu Fukushima; Andrew Gyekenyesi. Vol. 37 7. ed. American Ceramic Society, 2017. p. 189-200 (Ceramic Engineering and Science Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

Piat, R, Kashtalyan, M & Guz, I 2017, Modeling of damage in an mmc with lamellar microstructure. in WM Kriven, J Wang, Y Zhou, D Zhu, GK Costa, M Fukushima & A Gyekenyesi (eds), Developments in Strategic Ceramic Materials II: A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016. 7 edn, vol. 37, Ceramic Engineering and Science Proceedings, American Ceramic Society, pp. 189-200, Developments in Strategic Ceramic Materials II - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016, Daytona Beach, United States, 24/01/16. https://doi.org/10.1002/9781119321811.ch18

Piat R, Kashtalyan M, Guz I. Modeling of damage in an mmc with lamellar microstructure. In Kriven WM, Wang J, Zhou Y, Zhu D, Costa GK, Fukushima M, Gyekenyesi A, editors, Developments in Strategic Ceramic Materials II: A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016. 7 ed. Vol. 37. American Ceramic Society. 2017. p. 189-200. (Ceramic Engineering and Science Proceedings). Epub 2017 Jan 30. doi: 10.1002/9781119321811.ch18

Piat, Romana ; Kashtalyan, Maria ; Guz, Igor. / Modeling of damage in an mmc with lamellar microstructure. Developments in Strategic Ceramic Materials II: A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016. editor / Waltraud M. Kriven ; Jingyang Wang ; Yanchun Zhou ; Dongming Zhu ; Gustavo K. Costa ; Manabu Fukushima ; Andrew Gyekenyesi. Vol. 37 7. ed. American Ceramic Society, 2017. pp. 189-200 (Ceramic Engineering and Science Proceedings).

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N2 - This chapter describes the stress fields in a single‐domain sample of metal‐ceramic composite containing multiple cracks in the ceramic layer. The domain size and the lamellae spacing are functions of the freeze‐casting parameters, whereas the ceramic content of the preform depends upon the initial composition of the suspension. For small crack spacing, crack widening contributes to reduction of the maximum axial stress value at mid‐point between the cracks. Crack widening also changes the distribution of the shear stresses in the vicinity of the crack tip and the crack tip region. The influence of crack distances and crack widening on the stress distribution in metalceramic composites with lamellar microstructure was studied using analytical and FE methods. FE model predicted the development of the compressive zone in between the cracks for small distances between the cracks. For small crack spacing, crack widening contributes to reduction of the maximum axial stress value at mid‐point between the cracks. Material behaviour of the metallic and ceramic layers was modelled as elastic.

AB - This chapter describes the stress fields in a single‐domain sample of metal‐ceramic composite containing multiple cracks in the ceramic layer. The domain size and the lamellae spacing are functions of the freeze‐casting parameters, whereas the ceramic content of the preform depends upon the initial composition of the suspension. For small crack spacing, crack widening contributes to reduction of the maximum axial stress value at mid‐point between the cracks. Crack widening also changes the distribution of the shear stresses in the vicinity of the crack tip and the crack tip region. The influence of crack distances and crack widening on the stress distribution in metalceramic composites with lamellar microstructure was studied using analytical and FE methods. FE model predicted the development of the compressive zone in between the cracks for small distances between the cracks. For small crack spacing, crack widening contributes to reduction of the maximum axial stress value at mid‐point between the cracks. Material behaviour of the metallic and ceramic layers was modelled as elastic.

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ER -

Modeling of damage in an mmc with lamellar microstructure

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