書誌事項
- タイトル別名
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- Ultrasonic Attenuation Monitoring of Fatigue progress in a Low-carbon Steel with Electromagnetic Acoustic Resonance
- デンジ チョウオンパ キョウメイホウ ニ ヨル テイタンソ コウ ノ ヒロウ シンコウ チュウ ノ チョウオンパ ゲンスイ ノ モニタリング
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We studied microstructure evolution in low carbon steels, containing C:0.15 mass%, subjected to tensioncompressionfatigue through in situ monitoring of axial shear wave attenuation and velocity with the electromagneticacoustic resonance (EMAR)which is a combination of the resonant technique and a non-contacting electromagneticacoustic transduce(r EMAT). This transducer based on the magnetostrictive effect is key to establish a continuousmonitoring for microstructural change in the surface of the materials with high sensitivity. We find that the attenuationis highly sensitive to the accumulated fatigue damage, showing a minimum around 20 percent of the whole life. Thisnovel phenomenon is interpreted in terms of drastic change in dislocation mobility and rearrangement, which issupported by TEM observation for dislocation structure. This technique has a potential to assess the damage advanceand to predict the fatigue life of metals.
We studied microstructure evolution in low carbon steels, containing C:0.15 mass%, subjected to tensioncompressionfatigue through in situ monitoring of axial shear wave attenuation and velocity with the electromagneticacoustic resonance (EMAR)which is a combination of the resonant technique and a non-contacting electromagneticacoustic transduce(r EMAT). This transducer based on the magnetostrictive effect is key to establish a continuousmonitoring for microstructural change in the surface of the materials with high sensitivity. We find that the attenuationis highly sensitive to the accumulated fatigue damage, showing a minimum around 20 percent of the whole life. Thisnovel phenomenon is interpreted in terms of drastic change in dislocation mobility and rearrangement, which issupported by TEM observation for dislocation structure. This technique has a potential to assess the damage advanceand to predict the fatigue life of metals.
収録刊行物
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- 湘南工科大学紀要
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湘南工科大学紀要 44 (1), 7-13, 2010-07-14
湘南工科大学
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詳細情報 詳細情報について
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- CRID
- 1050282812549035264
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- NII論文ID
- 110007608526
- 120005538700
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- NII書誌ID
- AN10400308
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- ISSN
- 09192549
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- NDL書誌ID
- 10638880
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- 本文言語コード
- ja
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- 資料種別
- departmental bulletin paper
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- データソース種別
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- IRDB
- NDL
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