書誌事項
- タイトル別名
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- 431 Acoustic emission behavior in detecting delaminations of plasma-sprayed HA coating during 4-points bending
- 水酸アパタイト溶射皮膜の4点曲げ密着強度のAEによる評価
- スイサン アパタイト ヨウシャ ヒマク ノ 4テン マゲ ミッチャク キョウド ノ AE ニ ヨル ヒョウカ
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抄録
The purpose of this research is to propose a simpler method of evaluating adhesive strength for hydroxyapatite (HAp) coating using four-points bending test with a slit coated specimen. AE signals were recorded and delamination behavier from the edges of HAp coating was observed during four-points bending test in order to specify delamination points. AE signals was generated at the time of delamiations and the AE signal corresponded at the beginning periods of cumulative AE count, not the end period when a conventional AE method for bending strength considered the point as cracking/delaminations. Furthermore, AE signal in delaminations belonged to higher frequency range compared with the signals from only Ti substrates or cracking in HAp coating. Consequently, AE method successfully detected the beginning point of delaminations, which is important in discussing the interface strength of HAp coating layer.
収録刊行物
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- 機械材料・材料加工技術講演会講演論文集
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機械材料・材料加工技術講演会講演論文集 2012.20 (0), _431-1_-_431-5_, 2012
一般社団法人 日本機械学会