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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/37040完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 馬劍清 | |
| dc.contributor.author | Chun-Kai Chang | en |
| dc.contributor.author | 張鈞凱 | zh_TW |
| dc.date.accessioned | 2021-06-13T15:18:15Z | - |
| dc.date.available | 2011-08-15 | |
| dc.date.copyright | 2011-08-15 | |
| dc.date.issued | 2011 | |
| dc.date.submitted | 2011-08-11 | |
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[43] Sun, Q., Liu, D., Xia, L., Wang, J., Liu, H., and Shum, P., 'Experimental demonstration of multipoint temperature warning sensor using a multichannel matched fiber Bragg grating,' IEEE Photonics Technology Letters, vol. 20, pp. 933-935, 2008. [44] Tai, H., 'Simple numerical simulation of strain measurement,' SPIE’s 47 Annual Meeting, July 5-11, pp. 5-11, 2002. [45] Takahashi, S. and Shibata, S., 'Thermal variation of attenuation for optical fibers,' Journal of Non-Crystalline Solids, vol. 30, pp. 359-370, 1979. [46] Zhao, X., Song, G., Fernandez, M., and Ou, J., 'One kind of fiber Bragg grating displacement sensor using micro-elastic spring (Proceedings Paper),' 2009. [47] 'Singal Conditioner Model 2775AM4,' Endevco Corporation. [48] 'Piezo film sensors technical manual,' Measurement Spercialties, Inc., 1999. [49] 潘善盈, 馬劍清, '應用PVDF感測器於懸臂樑之主動抑振與揚聲器音壓之控制' 國立台灣大學機械工程研究所碩士論文, 2009. [50] 江嘉慶, 單秋成, '能量調變型光纖光柵感測器' 第十二屆機械工程研討會, 2003. [51] 葉耀文, 馬劍清, '短週期光纖光柵在動態系統的量測與應用' 國立台灣大學機械工程研究所碩士論文, 2003. [52] 張智凱, 馬劍清, '應用暫態彈性波理論反算材料性質' 國立台灣大學機械工程研究所碩士論文, 1996. [53] 張振銘, 馬劍清, '應用暫態彈性波理論反算薄膜系統之材料性質' 國立台灣大學機械工程研究所碩士論文, 1998. [54] 李艮生, 馬劍清, '三維層狀介質暫態彈性波傳的理論解析、計算及實驗' 國立台灣大學機械工程研究所博士論文, 1998. [55] 廖雪吩, 應宜雄, '應用數值拉普拉斯逆轉換法於壓電材料動力破壞之研究' 國立淡江大學航空太空工程學系碩士論文, 2007. [56] 張嘉峰, 林宜清, '混凝土結構品質應力波檢測方法與裝置開發及應用' 國立中興大學土木工程學系碩士論文, 2003. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/37040 | - |
| dc.description.abstract | 壓電薄膜感測器(PVDF)與布拉格光纖光柵(FBG)，是近年來常被學者研究的兩種感測器。本文主要利用PVDF感測器可量測壓力的特性，將其黏貼於待測物表面以獲得動態外力作用的波源歷時，利用此方法獲得外力的優點在於PVDF本身輕薄不影響待測物系統、易黏貼於各待測物表面且具有優異的動態量測能力，本文也建立PVDF量測動態外力作用於薄板結構的方法。另一方面，研究中將利用FBG能量調變法來量測結構物的應變與位移並與其他感測器比較，針對FBG三維量測系統的動態量測能力做相關的探討。
本文利用量測到的波源歷時配合理論分析與有限元素法數值計算(ABAQUS)來獲得結構物的暫態波傳行為。其中理論計算本文利用兩種方法分析分別為模態疊加法與拉普拉斯轉換法，對於拉普拉斯轉換域下的逆轉換計算通常是很複雜的，為了使計算更簡單與有效率，我們利用Durbin拉普拉斯數值逆轉換的方式來獲得半解析半數值的理論解，並利用模態疊加法的理論正解來驗證拉普拉斯轉換法配合Durbin拉普拉斯數值逆轉換的正確性。在大多數工程結構問題上要獲得理論解是不容易的工作，因此本文也利用有限元素法模擬結構物的暫態波傳行為。最後將理論分析與有限元素法數值計算的結果與實驗量測比較，驗證實驗量測的正確性。 | zh_TW |
| dc.description.abstract | Recently, piezoelectric film(PVDF) and fiber Bragg grating(FBG) are usually investigated by researcher. We use the FBG with power modulated sensing method to measure strain and displacement of the structure, and compared the sensing results with other sensors. Also, we investigate and discuss the dynamic measurement ability of the three-dimensional FBG measurement system. Then, PVDF can be used to measure pressure and dynamic external force history and has many advantages such as light, thin, excellent dynamic measurement ability and easy to adhesive on the object surface. In this thesis, we establish a measurement method to measure the dynamic force history on thin plate structures.
We can use the force history to conduct theoretical analysis and numerical calculation of finite element method(ABAQUS) then obtain the results of transient wave propagation within the structure. In theoretical analysis, we use the normal mode method and the Laplace transform method to calculate the results of transient wave propagation within the structure. For the Laplace transform method, it’s difficult to derive the inversion in transform domain. Therefore, we use the Durbin numerical inversion method to inverse the solution in transform domain and the inversion can be easier and more efficient. Besides, we use the exact solution determined by normal mode method to compare with the solution determined by Laplace method. It’s not easy to obtain the theoretical solution of transient wave propagation within the structure in most of engineering structure issue, thus, we can use the finite element method to estimate it. Finally, we compare the transient response of theoretical analysis, finite element method and experimental measurement to verify the accuracy of experimental measurement. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-13T15:18:15Z (GMT). No. of bitstreams: 1 ntu-100-R98522518-1.pdf: 15610120 bytes, checksum: e98ab7db2d0e4fced9764cda8ec913e7 (MD5) Previous issue date: 2011 | en |
| dc.description.tableofcontents | 摘要 I
Abstract II 目錄 IV 圖目錄 VII 表目錄 XX 第一章 緒論 1 1.1 研究動機 1 1.2 文獻回顧 2 1.2.1 壓電薄膜感測器 2 1.2.2 光纖光柵感測器 3 1.2.3 暫態波傳理論 4 1.3 內容簡介 5 第二章 實驗設備及感測器介紹 8 2.1 布拉格光纖光柵 8 2.1.1 布拉格光纖光柵基本原理 8 2.1.2 布拉格光纖光柵模態耦合理論 10 2.1.3 模態耦合理論應用於動態應變場 13 2.1.4 布拉格光纖光柵能量調變法 15 2.2 聚偏二氟乙烯薄膜感測器 15 2.3 光纖位移計 17 2.4 錐形位移感測器 18 第三章 波源歷時量測 32 3.1 Hertz接觸理論 32 3.2 實驗量測波源歷時方法 34 3.2.1 電流法 34 3.2.1.1 實驗架設 34 3.2.1.2 實驗結果與討論 35 3.2.2 PVDF量測法 36 3.2.2.1 實驗架設 37 3.2.2.2 實驗結果與討論 38 3.2.3 PVDF量測法於薄樑結構之應用 40 3.2.3.1 實驗架設 40 3.2.3.2 實驗結果與討論 41 第四章 懸臂樑受鋼珠撞擊暫態波傳理論計算 63 4.1 古典樑理論與理論波源歷時 63 4.1.1 古典樑理論 63 4.1.2 理論波源歷時 64 4.2 模態展開法(Normal Mode Method) 65 4.2.1 利用模態展開法求鋼珠撞擊懸臂樑之暫態響應 65 4.3 拉普拉斯轉換法(Laplace Transform Method) 73 4.3.1 Durbin數值拉普拉斯逆轉換方法 74 4.3.2 利用拉普拉斯轉換法求鋼珠撞擊懸臂樑之暫態響應 75 4.4 數值計算討論與比較 85 4.4.1 模態展開法在懸臂樑高頻時的數值問題 85 4.4.2 數值計算 87 第五章 懸臂樑受鋼珠撞擊暫態波傳實驗與有限元素數值計算 113 5.1 ABAQUS有限元素法數值計算 113 5.2 實驗架設 115 5.3 理論分析、數值計算與實驗量測結果與討論 116 5.3.1 觀測點距離固定端118mm處之軸向應變 118 5.3.2 觀測點距離固定端90mm處之軸向應變 121 5.3.3 觀測點距離固定端90mm處之側向位移 123 5.3.4 觀測點距離固定端10mm處之軸向應變 126 5.3.5 觀測點距離固定端10mm處之側向位移 128 5.4 利用布拉格光纖光柵量測懸臂樑暫態位移與應變 130 5.4.1 實驗架設 130 5.4.2 結果與討論 131 第六章 實驗量測及理論模擬固體波傳 185 6.1 三維半無窮域受步階函數波源作用 185 6.1.1 實驗架設 185 6.1.2 實驗與結果討論 186 6.2 二維半無窮域受步階函數波源作用 187 6.2.1 實驗架設與模擬設定 187 6.2.2 實驗與結果討論 188 6.3 二維鋼板受步階函數波源作用 189 6.3.1 實驗架設與模擬設定 189 6.3.2 實驗與結果討論 189 6.4 厚鋁塊受鋼珠撞擊暫態波傳量測 190 6.4.1 實驗架設 190 6.4.2 實驗與結果討論 191 第七章 結論與未來展望 221 7.1 結論 221 7.2 未來展望 223 參考文獻 225 附錄 231 | |
| dc.language.iso | zh-TW | |
| dc.subject | 數值拉普拉斯逆轉換 | zh_TW |
| dc.subject | 布拉格光纖光柵 | zh_TW |
| dc.subject | 壓電薄膜 | zh_TW |
| dc.subject | PVDF | zh_TW |
| dc.subject | 有限元素法 | zh_TW |
| dc.subject | 能量調變法 | zh_TW |
| dc.subject | 暫態波傳 | zh_TW |
| dc.subject | 波源歷時 | zh_TW |
| dc.subject | 模態疊加法 | zh_TW |
| dc.subject | 拉普拉斯轉換法 | zh_TW |
| dc.subject | Laplace transform method | en |
| dc.subject | finite element method | en |
| dc.subject | power modulated sensing method | en |
| dc.subject | transient wave propagation | en |
| dc.subject | force history | en |
| dc.subject | normal mode method | en |
| dc.subject | numerical inversion of Laplace | en |
| dc.subject | fiber Bragg grating | en |
| dc.subject | piezoelectric film | en |
| dc.subject | PVDF | en |
| dc.title | 位移與應變暫態波傳之實驗量測、理論分析以及數值計算 | zh_TW |
| dc.title | Experimental Measurement, Theoretical Analysis and Numerical Calculation of Transient Wave Propagation of Displacement and Strain | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 99-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 黃錦煌,鄭志鈞,劉昭華 | |
| dc.subject.keyword | 布拉格光纖光柵,壓電薄膜,PVDF,有限元素法,能量調變法,暫態波傳,波源歷時,模態疊加法,拉普拉斯轉換法,數值拉普拉斯逆轉換, | zh_TW |
| dc.subject.keyword | fiber Bragg grating,piezoelectric film,PVDF,finite element method,power modulated sensing method,transient wave propagation,force history,normal mode method,Laplace transform method,numerical inversion of Laplace, | en |
| dc.relation.page | 236 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2011-08-11 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
| 顯示於系所單位： | 機械工程學系 | |
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