For Libraries For Publication Downloads News About Us Contact Us
Paper Titles
Laminated Ceramic Structures within Alumina / YTZP System Obtained by Low Pressure Joining
p.219
Functional Gradient Alumina Ceramics with Controlled Porosity
p.223
Glass-Alumina Functionally Graded Materials Produced by Plasma Spraying
p.227
Characterization of Y2O3, CeO2 and Y2O3+CeO2 Doped FGM Tetragonal ZrO2 Ceramics by Spark Plasma Sintering
p.231
Recent Advances in Material Characterization Using the Impulse Excitation Technique (IET)
p.235
Strain Mismatch in Ceramic Multilayers: Determination by Strength Measurements
p.239
Residual Stress Assessment in the Al2O3\Mullite Based Laminated System
p.243
Roughness Effect on the Mechanical Properties of Ceramic Materials Measured from Nanoindentation Tests
p.247
Geometry Effect on the Thermal Shock Response of Al2O3/ZrO2 Multilayered Ceramics
p.251

Recent Advances in Material Characterization Using the Impulse Excitation Technique (IET)

Article Preview

Abstract:

The Impulse Excitation Technique (IET) is a non-destructive technique for evaluation of the elastic and damping properties of materials. This technique is based on the mechanical excitation of a solid body by means of a light impact. For isotropic, homogeneous materials of simple geometry (prismatic or cylindrical bars), the resonant frequency of the free vibration provides information about the elastic properties of the materials. Moreover, the amplitude decay of the free vibration is related to the damping or internal friction of the material. At present, IET is a well-established non-destructive technique for the calculation of elastic moduli and internal friction in monolithic, isotropic materials. Standard procedures are described in ASTM E 1876-99 and DIN ENV 843-2. IET can also be performed at high temperature (HT-IET) using a dedicated experimental setup in a furnace and constitutes a valuable tool in the field of mechanical spectroscopy. In the present work, the most recent advances in high temperature characterization using IET at K.U. Leuven are presented: the deformation behaviour of WC-Co hard metals, softening phenomena in TiB2, relaxation mechanisms in ZrO2 composites and “in-situ” monitoring of the damage evolution in uniaxially pressed metallic green compacts during delubrication.

You might also be interested in these eBooks
Functional Gradient Ceramics, and Thermal Barriers View Preview

Info:

Periodical:

Key Engineering Materials (Volume 333)

Pages:

235-238

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.333.235

Citation:

Cite this paper

Online since:

March 2007

Authors:

Akhilesh Kumar Swarnakar, S. Giménez, Sedigheh Salehi, Jef Vleugels, Omer Van der Biest

Keywords:

Composite, e-Modulus, Hard Metals, Impulse Excitation Technique IET, Internal Friction, P/M Green Compact, TiB2, Zirconia

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] G. Roebben, B. Bollen, A. Brebels, J. Van Humbeeck and O. Van der Biest: Rev. Sci. Instrum. 68 (1997), p.4511.

DOI: 10.1063/1.1148422

Google Scholar

[2] R. Schaller, J.J. Ammann and C. Bonjour: Mat. Sci. Eng. A105/106 (1988), p.313.

Google Scholar

[3] S. Giménez, A. Vagnon, D. Bouvard and O. Van der Biest: accepted for publication Materials Science and Engineering A.

Google Scholar

[4] G. Roebben, B. Basu, J. Vleugels and O. van der Biest: J. Europ. Ceram. Soc. 23 (2003), p.481.

Google Scholar

[5] M. Weller and H. Schubert: J. Am. Ceram. Soc. 69 (1986), p.573.

Google Scholar

[6] G. Roebben and O. Van der Biest: Key Engineering Materials 206-213 (2002), p.621.

Google Scholar

[7] Y. Cheng and D.P. Thompson: J. Am. Ceram. Soc. 74.

Google Scholar

[5] (1991), p.1135.

Google Scholar

[8] J. -S. Lee, J. Fleig, J. Maier, D.Y. Kim and T. -J. Chung: J. Am. Ceram. Soc. 88 (2005).

Google Scholar

© 2024 Trans Tech Publications Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For open access content, terms of the Creative Commons licensing CC-BY are applied.
Scientific.Net is a registered trademark of Trans Tech Publications Ltd.