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研究生:陳玟君
研究生(外文):Wen-Chun Chen
論文名稱:主動式振動調變技術檢測混凝土細微裂紋
論文名稱(外文):Use of active vibro-modulation technique for detection of tiny cracks in concrete members
指導教授:林宜清林宜清引用關係
學位類別:碩士
校院名稱:國立中興大學
系所名稱:土木工程學系所
學門:工程學門
學類:土木工程學類
論文種類:學術論文
畢業學年度:97
語文別:中文
論文頁數:81
中文關鍵詞:非破壞檢測瑕疵主動式振動調變檢測
外文關鍵詞:nondestructive techniquescrackvibro-acoustic modulation technique
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目前混凝土非破壞檢測技術大多採用應力波或是超音波當做試驗媒介,透過瑕疵介面之間所造成波的折反射訊號反推求瑕疵位置,但是對於混凝土早期裂紋,甚至因反覆載重疲勞所造成之材料劣化,目前尚無法檢測。D.M. Donskoy以及A.M. Sutin等人在1997年首度透過外加振動(無論是利用敲擊或是另外以低頻超音波導入試體)強迫使裂紋的接觸面積發生改變之後,進而觀察另外一個高頻頻率周圍是否產生調變諧波,將該現象應用在金屬構件的細微裂紋非破壞檢測上,稱之為振動調變法,主動式的振動調變法對於裂縫存在敏感度較高,有助於早期材料破壞之預警。
本研究目的在於將該理論應用在混凝土裂縫瑕疵之非破壞檢測,研究結果顯示,即使材料初期裂紋表面不明顯甚至解壓後閉合,透過主動式振動調變檢測(Vibro-Acoustic Modulation Technique) 導入ω1與ω2兩頻率不同應力波的激發,低頻可使裂紋產生開合效果改變接觸式裂紋的接觸面積,使其產生額外的調變波,而調變波的出現可當作接觸型裂紋存在指標,達成檢測目的。在均質材料鋼試體的效應試驗,可以明顯辨識出若試體中有瑕疵的存在,則調變波便會產生。且導入之低頻與高頻比率約小於0.45%時,其調變波之訊號趨於穩定。再將主動式振動調變技術應用於混凝土材料,當試體中有裂縫時,其導入高頻兩側有調變波的產生。而隨著裂縫深度不同(瑕疵程度不同)時,其調變波之數量及振幅大小會與裂縫深度成正比。因此將主動式振動調變檢測技術應用於混凝土裂縫瑕疵,獲得好的檢測成果。
總目錄
中文摘要…………………………………………………………Ⅰ
Abstract…………………………………………………………Ⅱ
總目錄……………………………………………………………Ⅲ
本文目錄…………………………………………………………Ⅲ
表目錄……………………………………………………………Ⅳ
圖目錄……………………………………………………………Ⅴ

本文目錄
第一章 緒論 1
1-1 前言 1
1-2 研究動機與目的 2
第二章 文獻回顧與背景 4
2-1 混凝土裂縫之非破壞檢測技術介紹 4
2-1-1 敲擊式繞射波傳輸時間法 4
2-2 主動式振動諧波技術之介紹 5
第三章 主動式振動調變技術頻譜尖峰振幅值之效應 8
3-1 鋼材料實驗規劃與配置 8
3-1-1 實驗配置 8
3-1-2 試驗儀器 9
3-1-3 試驗步驟 10
3-2 主動式振動調變技術—鋼珠敲擊應用在均質材料之效應討論 10
3-3 單一固定頻率低頻振動源之頻率規劃 11
3-4 主動式振動調變技術—低頻振動器應用在均質材料之效應討論 12
3-4-1 低頻振動器頻率78.68Hz振動無裂縫鋼試體 12
3-4-2 低頻振動器頻率78.68Hz振動接觸型裂縫鋼試體 13
第四章 混凝土試驗 14
4-1 混凝土材料實驗規劃與配置 14
4-1-1 混凝土試體規劃 14
4-1-2 實驗配置 14
4-2 混凝土材料試驗結果 15
4-2-1 固定頻率之低頻振動器 15
4-2-3 可變頻低頻馬達 17
4-2-4 裂縫在側 19
第五章 結果討論 20
5-1 正規化與破壞指數之定義 20
5-1-1 混凝土無裂縫 21
5-1-2 混凝土深裂縫 22
5-1-3 混凝土淺裂縫 22
第六章 結論與未來展望 23
6-1 結論 23
6-2 建議 24
參考文獻 25
1.K.M. Nemati, “Fracture Analysis of Concrete Using Scanning Electron Microscopy”, SCANNING, Vol. 19, pp.426–430.(1997)
2.D. Broek, “Elementary Engineering Fracture Mechanics”, Fourth revised edition, Kluwer Academic Publishers, Dordrecht Kluwer, Dordrecht.(1991)
3.S.P. Shah, S.E. Swartz, C. Ouyang, “Fracture Mechanics of Concrete.”, John Wiley & Sons, New York.(1995)
4.P. Soroushian, M. Elzafraney, “Damage Effects on Concrete performance and microstructure”,Cement&Concrete Composites, 26, pp.853-859.(2004)
5.H. Horii, H.C. Shin, T.M. Pallewatta, “Mechanism of Fatigue Crack Growth in Concrete,” Cement & Concrete Composites, Vol.14, pp.83-89. (1992)
6.Hsu, T.C Thomas., "Fatigue of Plain Concrete," ACI Materials Journal, Vol. 78, pp.292-305. (1981).
7.D.A. Anderson and R.K. Seals, "Pulse Velocity as a Predictor of 28- and 90-Day Strength," ACI Materials Journal, Vol. 78, No. 2, pp. 116-122. (1981)
8.ASTM C597-97, “Standard Test Method for Pulse Velocity through Concrete”, ASTM, vol. 4.02, pp. 291-293.(1998)
9.ACI Committee 228, "In-Place Methods for Determination of Strength of Concrete," ACI Materials Journal, Vol. 85, No. 5, pp. 446-471. (1988)
10.T.T. Wu and T.F. Lin, "The Stress Effect on the Ultrasonic Velocity Variations of Concrete under Repeated Loading," ACI Materials Journal, Vol. 95, No. 5, pp. 519-524. (1998)
11.M. Sansalone, N.J. Carino, "Impact-Echo: A Method for Flaw Detection in Concrete Using Transient Stress Waves," NBSIR 86-3452, National Bureau of Standards, Gaithersburg, Maryland, Sept., 1986, 222 pp. (1986)
12.M.Sansalone, N.J.Carino, "The Transient Impact Response of Plates Containing Disk-Shaped Flaws," National Bureau of Standards Journal of Research, November-December, pp.355-367. (1987)
13.Sansalone, M., and Carino, N.J., "Laboratory and Field Study of the Impact-Echo Method for Flaw Detection in Conerete," in Nondestructive Testing of Concrete, ACI Special Publication, pp. 1-20. (1988)
14.Sansalone, M., and Carino, N.J., "Detecting Honeycombing, the Depth of Surface-opening Cracks, and Ungrouted Ducts Using the Impact-Echo Method," Concrete International, April, 1988, pp. 38-46. (1988)
15.C. Cheng, M.Sansalone, "The Impact-Echo Response of Concrete Plates Containing Delaminations-Numerical, Experimental, and Field Studies," RILEM: Materials and Structures, Vol. 26, pp. 274-285. (1993)
16.Y.Lin, M. Sansalone, N.J. Carino, "Finite Element Studies of the Impact-Echo Response of Plates Containing Thin Layers and Voids," Journal of Nondestructive Evaluation, Volume 9, No. 1, pp. 27-47. (1990)
17.Y.Lin, and M. Sansalone, "Detecting Flaws in Concrete Beams and Columns Using the Impact-Echo Method," ACI Materials Journal, Vol. 89, No. 4, pp. 394-405. (1992)
18.J.M. Lin, and M. Sansalone, "The Transverse Elastic Impact Response of Thick Hollow Cylinders," Journal of Nondestructive Evaluation, Vol. 12, No. 2, pp. 139-149. (1993)
19.W. Morris, O.Buck, RV. Inman, “Acoustic Harmonic Generation Due To Fatigue damage in high-strength aluminum,” Journal of Applied Physics, 50(11), pp.6737-6741.(1979)
20.J.M. Richardson, "Harmonic Generation at an Unbounded Interfaced-Ι. Planar Interface between Semi-infinite Elastic Media," International Journal of Engineering Science, Volume 17, pp. 73-85. (1979)
21.SI. Rokhlin, TE. Matikas, “Ultrasonic characterization of surfaces and interfaces,” Mater Res Soc Bull, Vol.21, No.11, pp.28–32. (1996)
22.O. Rudenko, Chin An Vu., "Nonlinear Acoustic Properties Of A Rough Surface Contact and Acoustic-Diagnostics of a Roughness Height Distribution," Acoustic Physics Vol. 40, No. 4, pp.593-596. (1994)
23.Andrei Zagrai, D.M. Donskoy, Jean-Jouis Lottiaux, “N-scan: New Vibro-Modulation System for Crack Detection, Monitoring and Characterization,” 30th Annual Review of Progress in Quantitative Nondestructive Evaluation. (1997)
24.A.M. Sutin, D.M. Donskoy, “Vibro-Acoustic Modulation Nondestructive Evaluation Technique, System for Crack Detection,” Proceedings of SPIE Nondestructive Evaluation of Aging Aircraft, Airport, and Aerospace Hardware, pp.226-237. (1998)
25.D.M. Donskoy, A.M. Sutin. A. Ekimov, “Nonlinear Acoustic Interaction on Contact Interfaces and Its Use for Nondestructive Testing,” NDT&E International, v.34, p.231-238.(2001)
26.E.A. Koen, V.D. Abeele, A. Sutin, J. Carmeliet, P.A. Johnson, “Micro-Damage Diagnostics Using Nonlinear Elastic Wave Spectroscopy (NEWS),” NDT&E International, Vol.34, No. 11, pp.239-248.(2001)
27.A. Moussatov, B. Castagnede and V. Gusev, “ Frequency up-conversion and frequency down-conversion of acoustic waves in damaged materials” Physics Letters A 301 281-290(2002)
28.D.M. Donskoy, K. Sheppard, A. Zagrai , A. Chudnovsky ”NON-LINEAR ACOUSTIC VIBRO-MODULATION TECHNIQUE FOR DETECTION AND MONITORING OF CONTACT-TYPE DEFECTS” 6th International Aircraft Corrosion Workshop,24-27 August 2004, Solomons, Maryland, USA.(2004)
29.K. Warnemuende , H.C. Wu, “Actively modulated acoustic nondestructive evaluation of concrete” Cement and Concrete Research 34 563-570.(2004)
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