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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 黃維信 | zh_TW |
dc.contributor.advisor | Wei-Shien Hwang | en |
dc.contributor.author | 楊立安 | zh_TW |
dc.contributor.author | Li-An Yang | en |
dc.date.accessioned | 2023-05-18T16:44:01Z | - |
dc.date.available | 2023-11-09 | - |
dc.date.copyright | 2023-05-11 | - |
dc.date.issued | 2023 | - |
dc.date.submitted | 2023-02-18 | - |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/87267 | - |
dc.description.abstract | 本文探討使用麥克風測量振動纜索之聲壓訊號並求取張力值的可行性。在張力計算方面,分別使用弦理論帶入兩端固定邊界條件以及梁理論帶入簡支梁邊界條件來推導出纜索自然頻率值與張力值之間的關係式,由聲壓訊號識別出自然頻率值後進行反算,實驗設置方面,將固定於結構物之受張力鐵線模擬為實際纜索進行聲壓訊號測量,並驗證在不同結構參數下此方法求得之張力值皆可靠,再進一步對鐵線做加速腐蝕處理以探討纜索受到腐蝕損害時可能反映之跡象。 | zh_TW |
dc.description.abstract | This thesis explores the feasibility of using a microphone to measure the sound pressure signal of a vibrating cable and to obtain the tension value. In terms of tension calculation, the relationship between the natural frequency value and tension value of the cable is derived using string theory with fixed boundary conditions at both ends and beam theory with simple-supported beam boundary conditions. After identifying the natural frequency value from the sound pressure signal, the tension value is calculated. In terms of experimental setup, the tension iron wire fixed to the structure is simulated as an actual cable to measure the sound pressure signal, and the reliability of the tension values obtained under different structural parameters is verified. Further, the iron wire is subjected to accelerated corrosion treatment to explore the possible indications of cable damage due to corrosion. | en |
dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2023-05-18T16:44:01Z No. of bitstreams: 0 | en |
dc.description.provenance | Made available in DSpace on 2023-05-18T16:44:01Z (GMT). No. of bitstreams: 0 | en |
dc.description.tableofcontents | 致謝 i
摘要 ii ABSTRACT iii 目錄 iv 圖目錄 vi 表目錄 x 第一章 緒論 1 1.1 研究動機 1 1.2 文獻回顧 2 1.3 研究方法 4 第二章 基本理論 6 2.1 纜索張力計算 6 2.1.1 弦理論 6 2.1.2 雙振頻法理論 8 2.2 由聲壓訊號獲得結構振動的響應 9 2.2.1 聲音原理 9 2.2.2 結構動力響應 9 2.2.3 振動結構附近之聲壓訊號 11 第三章 實驗架構 15 3.1 實驗架構與方法 15 3.2 實驗設備與儀器 18 3.3 實驗流程 22 3.4 腐蝕樣品製作以及抗拉試驗 24 3.4.1 腐蝕試驗結果 24 3.4.2 抗拉試驗結果 27 第四章 實驗結果與討論 30 4.1 實驗模型設計與張力反算式驗證 30 4.2 不同結構參數之量測結果 37 4.2.1 自然頻率測量結果 38 4.2.2 張力值計算結果 43 4.3 鏽蝕纜索檢測 47 4.3.1 腐蝕後鐵線的自然頻率測量結果 47 4.3.2 腐蝕後鐵線的張力值計算結果 56 4.4 小結 60 第五章 結論與展望 61 5.1 結論 61 5.2 展望 62 參考文獻 63 附錄(一) 聲音訊號頻譜圖 65 | - |
dc.language.iso | zh_TW | - |
dc.title | 應用聲音訊號進行纜索張力值估算 | zh_TW |
dc.title | Cable Tension Estimation Using Acoustic Signals | en |
dc.type | Thesis | - |
dc.date.schoolyear | 111-1 | - |
dc.description.degree | 碩士 | - |
dc.contributor.oralexamcommittee | 王昭男;宋家驥;張國鎮 | zh_TW |
dc.contributor.oralexamcommittee | Chao-Nan Wang;Chia-Chi Sung;Kuo-Chun Chang | en |
dc.subject.keyword | 纜索張力,振動法,聲壓訊號,自然頻率,非破壞性檢測, | zh_TW |
dc.subject.keyword | Cable Tension,Vibration Method,Sound Pressure Signal,Natural Frequency,Nondestructive Testing, | en |
dc.relation.page | 74 | - |
dc.identifier.doi | 10.6342/NTU202300628 | - |
dc.rights.note | 同意授權(全球公開) | - |
dc.date.accepted | 2023-02-18 | - |
dc.contributor.author-college | 工學院 | - |
dc.contributor.author-dept | 工程科學及海洋工程學系 | - |
顯示於系所單位: | 工程科學及海洋工程學系 |
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