第五章 結論與建議
5.2 建議
5.2.2 非破壞性檢測—耦合波基法之建議
(一) 超音波訊號擷取系統由於探頭組數過少，在試體加、解壓的過 程中，其波速的反應並不靈敏，無法及時彰顯試體內部之微裂 縫發展；待日後能改良成多頻道、多組數或陣列式之超音波訊 號擷取系統，應可得較佳之結果。
(二) 本研究選定之大理岩岩材，因聲射事件擷取數較少，乃致後續 無法嘗試進行聲射訊號分布寬度之精確分析，建議未來可選用 其他岩材以研究之。
(三) 從 AE 訊號擷取之電壓差數據，到 AE 定位繪圖輸出，係經過數 種不同程式語言和繪圖軟體之助，雖於本研究中有改進其擷取-運算-輸出之效率，但仍未完成整體之自動化，未來建議能用 LabVIEW 並整合 Matlab 之功能，即時分析定位及繪出聲射位源 之演化反應。
(四) 本研究聲射擷取系統之硬體設備，還有其進步之空間，未來可 考量升級資料擷取介面卡，以提供更為迅捷之數據讀取，俾求 更為精準之聲射位源。
(五) 貫切試驗除了經聲射法可供微觀內部檢測，也可從表面微觀光 學觀察，因此未來研究方向除了聲射法應用於其他試驗外，還 可同時結合光學及其他非破壞檢測設備，以提昇試驗成效。
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其 Mitutoyo 應變計精度：0.002mm