シリケート表面処理のパルスエコー超音波検証 外部刺激/単一受信機構成:コンクリート試料のROCベースの差別化
Libor Topolář1, Lukáš Kalina2, David Markusík2
1Faculty of Civil Engineering, Brno University of Technology, Veveří 331/95, 602 00 Brno, Czech Republic.
Materials (Basel, Switzerland)
|August 28, 2025
まとめ
この研究は,非破壊的な超音波法で,セメントの表面処理を特定します. パルスエコー技術は,品質管理のための信号分析を使用して,異なるシリケート溶液を効果的に区別します.
科学分野:
- 材料科学
- 非破壊的試験
- 音響学
背景:
- 表面処理はセメント材料の耐久性を高める.
- 治療の有効性の正確な検証は,効果のために不可欠です.
- 既存の方法は破壊的かもしれないし フィールドに適用できないかもしれない.
研究 の 目的:
- シメント材料の表面処理を特定するための非破壊的な超音波パルスエコー方法を評価する.
- 処理によって誘発される音の変化を定量化するための時間領域の信号パラメータの信頼性を評価する.
- シリケートベースの表面処理の品質管理のためのフィールドに適応可能なプロトコルを開発する.
主な方法:
- 単一の受信機と外部送信機を備えたコンパクトなパルスエコー超音波システムが使用されました.
- 処理されていない,リチウムシリケートで処理された,およびヘキセリングリコール強化シリケートで処理された標本からのバックスキャッターエコーが分析されました.
- 振幅,RMS電圧,エネルギー,持続時間を含む信号パラメータが抽出されました.
- 受信機の動作特性 (ROC) 分析により,識別力が定量化されました.
主要な成果:
- ヘキシレングリコールによる治療を区別するために優れた分類性能 (AUC ≥0. 96) が達成されました.
- 適度な分離 (AUC ≈ 0. 61) は,未処理と標準のリチウムシリケート処理の標本間で観察されました.
- 最適なカットオフ値は,最高シナリオでは96%を超える感度と特異性をもたらした.
結論:
- シリケート表面処理の品質管理には,単一の受信機,片面パルスエコー超音波アプローチが有効です.
- この方法は迅速で,費用対効果が高く,現場での適用に適しています.
- この研究は,実験室での超音波特徴と表面処理の実際のフィールド検証の間のギャップを埋める.
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