書誌事項
- タイトル別名
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- Nondestructive Evaluation of Material Degradation and Damage using Nonlinear Ultrasonics
抄録
<p>Using the immersion local resonance ultrasonic technique, we have detected and imaged electron radiation damage of pressure vessel steel A533B, artificial small defects in a combustion nozzle of the rocket engine for repeatable use and weak adhesive area in bonded CRPP plates. In the local resonance ultrasonic technique, long sine-burst waves of through-thickness resonance frequency excite through-thickness resonance only within a focused beam area. When the plate thickness is constant, the resonant amplitude changes due to the variation of material properties. The resonant amplitude of the irradiated A533B steel sample is greater than that of unirradiated one. Artificial small defects, EDM slits, introduced in the combustion nozzle mockup of the rocket engine are clearly imaged. The weak adhesive area in bonded CRPP plates is also delineate. The local resonance ultrasonic technique is useful for detecting and imaging the variation of material properties, which are not performed by the conventional ultrasonic method.</p>
収録刊行物
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- 年次大会
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年次大会 2019 (0), J40145-, 2019
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390846609816995328
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- NII論文ID
- 130007816688
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- ISSN
- 24242667
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可