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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/7142

    Title: 雷射全像術於航空非破壞檢測的應用研究;Nondistructive Testing Laser Holographic for AEROSPACE
    Authors: 陳柏融;Po-jung Chen
    Contributors: 光電科學研究所碩士在職專班
    Keywords: 全像干涉;相位;瑕疵;超音波;非破壞檢測;Holographic;Interferometry;Non-Destructive Testi
    Date: 2008-07-02
    Issue Date: 2009-09-22 10:50:31 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 全像干涉檢測術在其影像資料中,包含有振動相位的干涉條紋,但與真實的瑕疵的尺寸,卻無明顯的對應關係,只能由干涉條紋形狀變化與標準試片比對,來推測瑕疵種類的關係,因此本論文利用的DH7000全像機台設計實驗來觀察干涉條紋形狀與瑕疵的尺寸關係及探討造成干涉條紋形狀變化的因素。所利用的DH7000全像機台是應用全像干涉術中的時間平均法,結合低頻超音波振動來產生干涉影像。借此機台來探討干涉條紋與瑕疵的尺寸關係及受到那些因素影響。於實驗中找出DH7000全像機台最佳的超音波振動頻率,及物光和參考光的最適合的比值。論文中也對常應用的非破壞檢測術進行比較,來提供非破壞檢測技術選擇的方向與提供全像非破壞檢測術於航太的未來可能的發展。 The image data of Holographic Interferometry includes interferece fringe of vibration phase, but without correspondent relation with the real size of faults. We conjecture the kind of faults only by comparing the changes of interference fringes and standard test piece. This research investigate the reasons what makes the shape difference of interference fringe by experiment. The experiment was made by DH7000 holographic machine for observing the relation between shape of interference fringes and size of the faults. The holographic machine applies the time averaging method of holographic interferometry and integrates the low frequency ultrasound to produce the interferece images. In the experiments, I would find out the best ultrasonic vibration frequency and adaptable ratio of object beam and referable beam. The thesis is aim to compare with the general , for the choices of testing methods and future development in aerospace.
    Appears in Collections:[光電科學研究所碩士在職專班 ] 博碩士論文

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