• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.11
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• pp.2486-2491
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• 2013

There are invisible defects by naked eyes in ceramic material images such as internal stomata, cracks and foreign substances. In this paper we propose a method to detect and extract such defects from ceramic pipe weld zone by applying ART2 learning. In pre-processing, we apply Ends-in Search Stretching to enhance the intensity and then perform fuzzy binarization with triangle type membership function followed by enhanced ART2 that interacts with random input patterns to extract such invisible defects. The experiment verifies that this proposed method is sufficiently effective.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.9 no.3
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• pp.347-352
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• 1999

The finite element formulation and simulation of drying process for ceramic electric insulators are investigated. The heat and moisture movements in green ceramics caused by the interaction of temperature gradient, moisture gradient, conduction, convection and evaporation are considered. The variations of temperature and moisture not only change the volume but also induce the hygro-thermal stress. The finite element formulation for solving the temperature and moisture distributions as well as the associated hygro-thermal stresses is derived. Using the computer code developed, the drying process of a ceramic electric insulator is simulated. Temperature distribution, moisture distribution, hygrothermal stress and deformed shape during the drying process are predicted.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2004.05b
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• pp.295-298
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• 2004

전기영동전착법은 도전성이 없는 산화물 또는 천연 분말을 알콜계 현탁용매와 전해질을 첨가시켜 전기이중층을 형성시킨 후 도전성을 갖는 모재에 미세 분말입자를 전착시킬 수 있는 기술이다. 본 논문은 이러한 전기영동법의 특성을 이용하여 세라믹계열의 분말을 모재에 전착시키는데 중요 요소인 기술적 제작 방법과 파라메터 등 복합적으로 작용되는 세라믹전착에 관한 내용을 연구하였다.

• Journal of the Korean Ceramic Society
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• v.36 no.10
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• pp.1048-1055
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• 1999

• Proceedings of the Korean Ceranic Society Conference
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• 2007.07a
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• pp.63-72
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• 2007

• Proceedings of the Korean Ceranic Society Conference
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• 2000.04a
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• pp.82.2-82.2
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• 2000

• Proceedings of the Korean Ceranic Society Conference
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• 2000.04a
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• pp.83.2-83.2
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• 2000

• Proceedings of the Korean Ceranic Society Conference
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• 2004.04b
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• pp.44.1-44.1
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• 2004

• Proceedings of the Korean Ceranic Society Conference
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• 2004.04b
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• pp.44.2-44.2
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• 2004

• Proceedings of the Korean Ceranic Society Conference
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• 2003.04a
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• pp.30.1-30
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• 2003