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研究生: 楊居政
Chu-Cheng Yang
論文名稱: 含缺陷複材平板之動態行為探討
Investigation of Dynamic Behavior of Composite Plates Containing Defects
指導教授: 王偉中
Wei-Chung Wang
口試委員:
學位類別: 碩士
Master
系所名稱: 工學院 - 動力機械工程學系
Department of Power Mechanical Engineering
論文出版年: 2005
畢業學年度: 93
語文別: 中文
論文頁數: 106
中文關鍵詞: 模態測試法振幅變動電子光斑影像干涉術光纖布拉格光柵振動複合材料平板非破壞檢測
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  • 本研究係以模態測試法、振幅變動電子光斑影像干涉術(Amplitude Fluctuation Electronic Speckle Pattern Interferometry, AF-ESPI)分別探討含缺陷複合材料平板前後表面的動態行為,以了解缺陷對於複材平板於不同振動模態時之影響。本研究另以振動方式進行非破壞檢測並證實以AF-ESPI及光纖布拉格光柵(Fiber Bragg Grating, FBG)量測是可行的。


    目錄 一、前言.............................................................................................1 二、文獻回顧.............................................................................................4 三、實驗原理.............................................................................................6 3.1 模態測試[35].............................................................................6 3.2 振幅變動電子光斑影像干涉術(AF-ESPI)[17,18] ..............11 3.3 FBG[34,36,37].........................................................................15 3.3.1 FBG 的製作....................................................................15 3.3.2 FBG 基本原理................................................................16 3.3.3 FBG 的感測原理............................................................18 四、實驗裝置與試片規劃......................................................................20 4.1 實驗裝置....................................................................................20 4.1.1 模態測試實驗裝置.......................................................20 4.1.2 ESPI 實驗裝置..............................................................20 4.1.3 FBG 感測裝置...........................................................22 4.2 模擬分析軟體.......................................................................23 4.2.1 模態分析軟體STAR[39] .......................................23 4.2.2 套裝軟體SURFER[40] ............................................23 4.3 試片規劃...................................................................................23 4.3.1 含缺陷複合材料試片...................................................24 5、實驗程序.............................................................................................25 5.1 模態測試...................................................................................25 5.2 AF-ESPI.....................................................................................25 5.3 FBG.............................................................................................26 六、結果與討論......................................................................................27 6.1 模態測試與AF-ESPI.................................................................27 6.1.1 模態測試.......................................................................27 6.1.2 AF-ESPI.......................................................................27 6.2 含缺陷複材平板之振動分析...................................................28 6.3 以AF-ESPI 對含缺陷複材試片頻率連續變化下的探討.......35 6.3.1 缺陷所產生的典型振型[21].......................................35 6.3.2 以AF-ESPI 評估缺陷之非破壞檢測...........................35 6.4 以FBG 對含缺陷複材試片之探討...........................................38 6.4.1 以FBG 擷取含缺陷複材試片的共振頻率..................39 6.4.2 在連續頻率變化下以FBG 擷取含缺陷複材試片 之訊號...........................................................................40 6.5 AF-ESPI 與FBG 對缺陷量測之比較..................................43 七、結論與未來展望..............................................................................44 7.1 結論......................................................................................44 7.2 未來展望..............................................................................45 八、參考文獻...........................................................................................47 圖目錄 圖3.1 電子光斑影像干涉術平面外光路圖[41] .................................52 圖3.2 不同影像處理方法ESPI 之比較[18] .......................................52 圖3.3 以全像式干涉曝光製作光纖光柵.............................................53 圖3.4 以相位光罩曝光製作光纖光柵.................................................53 圖3.5 FBG 核心模態反射示意圖..........................................................54 圖3.6 光通過FBG 時的反射與透射示意圖.........................................54 圖3.7 光的波傳與接收示意圖.............................................................55 圖3.8 光柵變形前後光譜變化.............................................................55 圖4.1 模態測試示意圖.........................................................................56 圖4.2 模態測試實驗裝置實景.............................................................56 圖4.3 電子光斑影像干涉術(ESPI)裝置示意圖[41] .................57 圖4.4 FBG 光路示意圖..........................................................................57 圖4.5 寬頻光源之頻譜圖.....................................................................58 圖4.6 試片尺寸.....................................................................................58 圖4.7 複材熱壓之疊層順序圖[21].......................................................59 圖4.8 複合材料製作之養護過程[42]....................................................59 圖4.9 正方形缺陷尺寸.........................................................................60 (a) 50mmX50mm 正方形缺陷….................................................. 60 (b) 30mmX30mm 正方形缺陷….................................................. 60 圖4.10 圓形缺陷尺寸...........................................................................60 (a) 直徑50mm 圓形缺陷.....….................................................. 60 (n) 直徑30mm 圓形缺陷.....….................................................. 60 圖4.11 正方形缺陷在複材平板之位置[21]…..................... 61 (a) 50mm×50mm 之正方形缺陷….................................. 61 (b) 30mm×30mm 之正方形缺陷….................................. 61 圖4.12 圓形缺陷在複材平板之位置[21]….................................. 62 (a) 直徑50mm 之圓形缺陷....…................................... 62 (b) 直徑30mm 之圓形缺陷....…................................... 62 圖4.13 試片缺陷位置示意圖...............................................................63 圖4.14 光纖光柵於[0/90]3S 完整平板之位置.....................................63 圖4.15 光纖光柵於含邊長50mm 方形缺陷複材平板之位置..............64 圖4.16 光纖光柵於含兩個30mmX40mm 矩形缺陷複材平板之位置....64 圖5.1 模態測試取樣點......................................................................65 圖5.2 中心波長1535nm 之FBG 反射光譜.................................65 圖5.3 實驗流程圖.................................................................. 66 圖6.1 A1 試片模態測試振型(其中(a1)~(a5)取自[21]) .............67 (a1)94Hz......................................................................................67 (b1)112Hz....................................................................................67 (a2)182Hz....................................................................................67 (b2)207Hz....................................................................................67 (a3)567Hz....................................................................................67 (b3)682Hz....................................................................................67 (a4)837Hz....................................................................................67 (b4)824Hz....................................................................................67 (a5)1416Hz..................................................................................67 (b5)1424Hz..................................................................................67 圖6.2 A2 試片模態測試振型(其中(a1)~(a5)取自[21]) .............68 (a1)97Hz......................................................................................68 (b1)97Hz......................................................................................68 (a2)190Hz....................................................................................68 (b2)202Hz....................................................................................68 (a3)601Hz....................................................................................68 (b3)597Hz....................................................................................68 (a4)749Hz....................................................................................68 (b4)726Hz....................................................................................68 (a5)1415Hz..................................................................................68 (b5)1397Hz..................................................................................68 圖6.3 A3 試片模態測試振型(其中(a1)~(a5)取自[21]) .............69 (a1)105Hz....................................................................................69 (b1)100Hz....................................................................................69 (a2)190Hz....................................................................................69 (b2)209Hz....................................................................................69 (a3)651Hz....................................................................................69 (b3)604Hz....................................................................................69 (a4)777Hz....................................................................................69 (b4)797Hz....................................................................................69 (a5)1411Hz..................................................................................69 (b5)1460Hz..................................................................................69 圖6.4 A4 試片模態測試振型(其中(a1)~(a5)取自[21]) .............70 (a1)91Hz......................................................................................70 (b1)98Hz......................................................................................70 (a2)189Hz....................................................................................70 (b2)204Hz....................................................................................70 (a3)581Hz....................................................................................70 (b3)584Hz....................................................................................70 (a4)744Hz....................................................................................70 (b4)803Hz....................................................................................70 (a5)1455Hz..................................................................................70 (b5)1314Hz..................................................................................70 圖6.5 A5 試片模態測試振型(其中(a1)~(a5)取自[21]) .............71 (a1)69Hz......................................................................................71 (b1)69Hz......................................................................................71 (a2)343Hz....................................................................................71 (b2)357Hz....................................................................................71 (a3)431Hz....................................................................................71 (b3)437Hz....................................................................................71 (a4)1045Hz..................................................................................71 (b4)954Hz....................................................................................71 (a5)1268Hz..................................................................................71 (b5)1100Hz..................................................................................71 圖6.6 A6 試片模態測試振型(其中(a1)~(a5)取自[21]) .............72 (a1)68Hz......................................................................................72 (b1)69Hz......................................................................................72 (a2)349Hz....................................................................................72 (b2)357Hz....................................................................................72 (a3)442Hz....................................................................................72 (b3)437Hz....................................................................................72 (a4)960Hz....................................................................................72 (b4)954Hz....................................................................................72 (a5)1111Hz..................................................................................72 (b5)1100Hz..................................................................................72 圖6.7 參考點與缺陷處平面外位移比較示意圖.................................73 圖6.8 完整試片[0/90]3S 之AF-ESPI 影像[21].......................74 (a)第一振型117Hz....................................................................74 (b)第二振型226Hz....................................................................74 (c)第三振型709Hz....................................................................74 (d)第四振型884Hz....................................................................74 (e)第五振型1652Hz..................................................................74 圖6.9 完整試片[±45]3S 之AF-ESPI 影像[21] .........................75 (a)第一振型79Hz......................................................................75 (b)第二振型387Hz....................................................................75 (c)第三振型458Hz....................................................................75 (d)第四振型1168Hz..................................................................75 (e)第五振型1521Hz..................................................................75 圖6.10 A1 試片之AF-ESPI 影像圖(其中(a1)~(a5)取自[21]) ...................................................................................................76 (a1)第一振形(94Hz) ............................................................76 (b1)第一振形(112Hz) ..........................................................76 (a2)第二振形(182Hz) ..........................................................76 (b2)第二振形(207Hz) ..........................................................76 (a3)第三振形(567Hz) ..........................................................76 (b3)第三振形(682Hz) ..........................................................76 (a4)第四振形(837Hz) .......................................................77 (b4)第四振形(824Hz) ..........................................................77 (a5)第五振形(1416Hz)........................................................77 (b5)第五振形(1424Hz)........................................................77 圖6.11 A2 試片之AF-ESPI 影像圖(其中(a1)~(a5)取 自[21]).....................................................................................78 (a1)第一振形(97Hz) ............................................................78 (b1)第一振形(97Hz) ............................................................78 (a2)第二振形(190Hz) ..........................................................78 (b2)第二振形(202Hz) ..........................................................78 (a3)第三振形(601Hz) ..........................................................78 (b3)第三振形(597Hz) ..........................................................78 (a4)第四振形(749Hz) ..........................................................79 (b4)第四振形(726Hz) ..........................................................79 (a5)第五振形(1415Hz)........................................................79 (b5)第五振形(1397Hz)........................................................79 圖6.12 A3 試片之AF-ESPI 之影像圖(其中(a1)~(a5)取 自[21]).....................................................................................80 (a1)第一振形(105Hz) ..........................................................80 (b1)第一振形(100Hz) ..........................................................80 (a2)第二振形(190Hz) ..........................................................80 (b2)第二振形(209Hz) ..........................................................80 (a3)第三振形(651Hz) ..........................................................80 (b3)第三振形(604Hz) ..........................................................80 (a4)第四振形(777Hz) ..........................................................81 (b4)第四振形(797Hz) ..........................................................81 (a5)第五振形(1411Hz)........................................................81 (b5)第五振形(1460Hz)........................................................81 圖6.13 A4 試片之AF-ESPI 影像圖(其中(a1)~(a5)取 自[21]).....................................................................................82 (a1)第一振形(91Hz) ............................................................82 (b1)第一振形(98Hz) ............................................................82 (a2)第二振形(189Hz) ..........................................................82 (b2)第二振形(204Hz) ..........................................................82 (a3)第三振形(581Hz) ..........................................................82 (b3)第三振形(584Hz) ..........................................................82 (a4)第四振形(744Hz) ..........................................................83 (b4)第四振形(803Hz) ..........................................................83 (a5)第五振形(1455Hz)........................................................83 (b5)第五振形(1314Hz)........................................................83 圖6.14 A5 試片之AF-ESPI 影像圖(其中(a1)~(a5)取 自[21]).....................................................................................84 (a1)第一振形(69Hz) ............................................................84 (b1)第一振形(69Hz) ............................................................84 (a2)第二振形(343Hz) ..........................................................84 (b2)第二振形(357Hz) ..........................................................84 (a3)第三振形(431Hz) ..........................................................84 (b3)第三振形(437Hz) ..........................................................84 (a4)第四振形(1045Hz)........................................................85 (b4)第四振形(954Hz) ..........................................................85 (a5)第五振形(1268Hz)........................................................85 (b5)第五振形(1100Hz)........................................................85 圖6.15 A6 試片之AF-ESPI 影像圖(其中(a1)~(a5)取 自[21]).....................................................................................86 (a1)第一振形(68Hz) ............................................................86 (b1)第一振形(69Hz) ............................................................86 (a2)第二振形(349Hz) ..........................................................86 (b2)第二振形(357Hz) ..........................................................86 (a3)第三振形(442Hz) ..........................................................86 (b3)第三振形(437Hz) ..........................................................86 (a4)第四振形(960Hz) ..........................................................87 (b4)第四振形(954Hz) ..........................................................87 (a5)第五振形(1111Hz)........................................................87 (b5)第五振形(1100Hz)........................................................87 圖6.16 四邊固定含正方形缺陷平板之振型與位移等高線[21] .......88 (a)第一振型................................................................................88 (b)第二振型................................................................................88 (c)第三振型................................................................................88 (d)第一振型之等高線位移圖...................................................88 (e)第二振型之等高線位移圖...................................................88 (f)第三振型之等高線位移圖...................................................88 圖6.17 含正方形缺陷複材平板因局部模態所產生的三種 典型振型.....................................................................................89 (a)第一振型(1300Hz) ................................................................89 (b)第二振型(1600Hz) ................................................................89 (c)第三振型(2000Hz) ................................................................89 圖6.18 試片A1 在頻率連續變化下之AF-ESPI 振型(unit:Hz).......90 (a)100 ...........................................................................................90 (b)200 ...........................................................................................90 (c)300 ...........................................................................................90 (d)400 ...........................................................................................90 (e)500 ...........................................................................................90 (f)600............................................................................................90 (g)700 ...........................................................................................90 (h)800 ...........................................................................................90 (i)900............................................................................................90 (j)1000..........................................................................................90 (k)1100 .........................................................................................90 (l)1200..........................................................................................90 (m)1300........................................................................................90 (n)1400.........................................................................................90 (o)1500.........................................................................................90 (p)1600.........................................................................................90 (q)1700.........................................................................................90 (r)1800..........................................................................................90 (s)1900 .........................................................................................90 (t)2000..........................................................................................90 圖6.19 試片A2 在頻率連續變化下之AF-ESPI 振型(unit:Hz).......91 (a)100 ...........................................................................................91 (b)200 ...........................................................................................91 (c)300 ...........................................................................................91 (d)400 ...........................................................................................91 (e)500 ...........................................................................................91 (f)600............................................................................................91 (g)700 ...........................................................................................91 (h)800 ...........................................................................................91 (i)900............................................................................................91 (j)1000..........................................................................................91 (k)1100 .........................................................................................91 (l)1200..........................................................................................91 (m)1300........................................................................................91 (n)1400.........................................................................................91 (o)1500.........................................................................................91 (p)1600.........................................................................................91 (q)1700.........................................................................................91 (r)1800..........................................................................................91 (s)1900 .........................................................................................91 (t)2000..........................................................................................91 圖6.20 試片A3 在頻率連續變化下之AF-ESPI 振型(unit:Hz).......92 (a)100 ...........................................................................................92 (b)200 ...........................................................................................92 (c)300 ...........................................................................................92 (d)400 ...........................................................................................92 (e)500 ...........................................................................................92 (f)600............................................................................................92 (g)700 ...........................................................................................92 (h)800 ...........................................................................................92 (i)900............................................................................................92 (j)1000..........................................................................................92 (k)1100 .........................................................................................92 (l)1200..........................................................................................92 (m)1300........................................................................................92 (n)1400.........................................................................................92 (o)1500.........................................................................................92 (p)1600.........................................................................................92 (q)1700.........................................................................................92 (r)1800..........................................................................................92 (s)1900 .........................................................................................92 (t)2000..........................................................................................92 圖6.21 試片A4 在頻率連續變化下之AF-ESPI 振型(unit:Hz).......93 (a)100 ...........................................................................................93 (b)200 ...........................................................................................93 (c)300 ...........................................................................................93 (d)400 ...........................................................................................93 (e)500 ...........................................................................................93 (f)600............................................................................................93 (g)700 ...........................................................................................93 (h)800 ...........................................................................................93 (i)900............................................................................................93 (j)1000..........................................................................................93 (k)1100 .........................................................................................93 (l)1200..........................................................................................93 (m)1300........................................................................................93 (n)1400.........................................................................................93 (o)1500.........................................................................................93 (p)1600.........................................................................................93 (q)1700.........................................................................................93 (r)1800..........................................................................................93 (s)1900 .........................................................................................93 (t)2000..........................................................................................93 圖6.22 試片A5 在頻率連續變化下之AF-ESPI 振型(unit:Hz).......94 (a)100 ...........................................................................................94 (b)200 ...........................................................................................94 (c)300 ...........................................................................................94 (d)400 ...........................................................................................94 (e)500 ...........................................................................................94 (f)600............................................................................................94 (g)700 ...........................................................................................94 (h)800 ...........................................................................................94 (i)900............................................................................................94 (j)1000..........................................................................................94 (k)1100 .........................................................................................94 (l)1200..........................................................................................94 (m)1300........................................................................................94 (n)1400.........................................................................................94 (o)1500.........................................................................................94 (p)1600.........................................................................................94 (q)1700.........................................................................................94 (r)1800..........................................................................................94 (s)1900 .........................................................................................94 (t)2000..........................................................................................94 圖6.23 試片A6 在頻率連續變化下之AF-ESPI 振型(unit:Hz).......95 (a)100 ...........................................................................................95 (b)200 ...........................................................................................95 (c)300 ...........................................................................................95 (d)400 ...........................................................................................95 (e)500 ...........................................................................................95 (f)600............................................................................................95 (g)700 ...........................................................................................95 (h)800 ...........................................................................................95 (i)900............................................................................................95 (j)1000..........................................................................................95 (k)1100 .........................................................................................95 (l)1200..........................................................................................95 (m)1300........................................................................................95 (n)1400.........................................................................................95 (o)1500.........................................................................................95 (p)1600.........................................................................................95 (q)1700.........................................................................................95 (r)1800..........................................................................................95 (s)1900 .........................................................................................95 (t)2000..........................................................................................95 圖6.24 不同疊層角度試片之缺陷面積與可檢測出缺陷所到 達頻率之比較.............................................................................96 圖6.25 所得曲線與實際能量變化比較圖...........................................96 圖6.26 試片F1 模態測試與AF-ESPI 結果.........................................97 (a1)第一振型..............................................................................97 (a2)第二振型..............................................................................97 (a3)第三振型..............................................................................97 (a4)第四振型..............................................................................97 (b1)69Hz......................................................................................97 (b2)116Hz....................................................................................97 (b3)389Hz....................................................................................97 (b4)484Hz....................................................................................97 圖6.27 第一模態之訊號圖...................................................................97 (a) F1 試片(64Hz).....................................................................97 (b) F2 試片(61Hz).....................................................................97 (c) F3 試片(60Hz).....................................................................97 圖6.28 第二模態之訊號圖...................................................................98 (a) F1 試片(116Hz)...................................................................98 (b) F2 試片(116Hz)...................................................................98 (c) F3 試片(112Hz)...................................................................98 圖6.29 第三模態之訊號圖...................................................................98 (a) F1 試片(389Hz)...................................................................98 (b) F2 試片(375Hz)...................................................................98 (c) F3 試片(356Hz)...................................................................98 圖6.30 第四模態之訊號圖...................................................................99 (a) F1 試片(484Hz)...................................................................99 (b) F2 試片(482Hz)...................................................................99 (c) F3 試片(477Hz)...................................................................99 圖6.31 頻率100Hz 之訊號圖..............................................................99 (a) F1 試片.................................................................................99 (b) F2 試片.................................................................................99 (c) F3 試片.................................................................................99 圖6.32 頻率200Hz 之訊號圖............................................................100 (a) F1 試片...............................................................................100 (b) F2 試片...............................................................................100 (c) F3 試片...............................................................................100 圖6.33 頻率300Hz 之訊號圖............................................................100 (a) F1 試片...............................................................................100 (b) F2 試片...............................................................................100 (c) F3 試片...............................................................................100 圖6.34 試片頻率400Hz 之訊號圖....................................................101 (a) F1 試片...............................................................................101 (b) F2 試片...............................................................................101 (c) F3 試片...............................................................................101 圖6.35 頻率500Hz 之訊號圖............................................................101 (a) F1 試片...............................................................................101 (b) F2 試片...............................................................................101 (c) F3 試片...............................................................................101 圖6.36 頻率600Hz 之訊號圖............................................................102 (a) F1 試片...............................................................................102 (b) F2 試片...............................................................................102 (c) F3 試片...............................................................................102 圖6.37 試片F1 連續振頻下AF-ESPI 圖...........................................102 (a)100Hz.....................................................................................102 (b)200Hz ....................................................................................102 (c)300Hz.....................................................................................102 (d)400Hz ....................................................................................102 (e)500Hz.....................................................................................102 (f)600Hz.....................................................................................102 表目錄 表3.1 由絕對值第一階貝式函數所計算出之暗紋與位移 大小之關係.................................................................................103 表4.1 含缺陷試片規劃之編號...........................................................103 表6.1 試片A1 之共振頻率.................................................................104 表6.2 試片A2 之共振頻率.................................................................104 表6.3 試片A3 之共振頻率.................................................................104 表6.4 試片A4 之共振頻率.................................................................105 表6.5 試片A5 之共振頻率.................................................................105 表6.6 試片A6 之共振頻率.................................................................105 表6.7 能檢測出試片中缺陷時之頻率...............................................106 表6.8 試片F1、F2 與F3 共振頻率...................................................106

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