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Bending Strength of Al2O3 Ceramics for Textiles Machinery and Elastic Wave Characteristics by Wavelet Analysis

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Abstract:

The optimized conditions of pressureless sintering were investigated in order to obtain the bending strength and the elastic wave signal of Al2O3 composite ceramics for textiles machinery. As sintering conditions, a temperature range from 1400°C to 1700°C and time from 30 minutes to 150 minutes were applied. Three-point bending tests were conducted on the sintered materials to obtain the strength property. From the test results, the optimum sintering condition was 1600°C, 100 minutes. Al2O3 composite ceramics showed that the elastic wave signal characteristics had a regular correlativity between the optimum sintering temperature and time as well as the maximum bending strength.

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Periodical:

Key Engineering Materials (Volumes 353-358)

Pages:

345-348

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.353-358.345

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Online since:

September 2007

Authors:

Ki Woo Nam, B.G. Ahn, M.K. Kim, C.S. Son, Jin Wook Kim, Seok Hwan Ahn

Keywords:

Al2O3 Composite Ceramics, Bend Strength, Crack Healing, Elastic Wave Signal, Textile Machinery, Time-Frequency Analysis (TFA), Wavelet

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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