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研究生： 李文傑
Wun-jie Li
論文名稱： 3Y氧化鋯薄板之單軸向拉壓負載
Uniaxial Tensile-Compressive Loadings on 3Y-ZrO2 Thin Plates
指導教授： 劉見賢
Chien-hsien Liu
口試委員: 呂森林
none
黃聰耀
none
學位類別： 碩士
Master
系所名稱： 工程學院 - 機械工程系
Department of Mechanical Engineering
論文出版年： 2009
畢業學年度： 97
語文別： 中文
論文頁數： 83
中文關鍵詞： 氧化鋯 、晶域重排 、相變化
外文關鍵詞： Zirconia, domain reoientation, phase transformation
相關次數： 點閱：181  下載：7 
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    • 本實驗中針對骨頭狀外型且可以承受平面應力負載之薄型3Y-氧化鋯試片進行單軸向拉應力循環負載與壓-拉應力交互循環負載之實驗，研究材料在這兩種應力負載狀態下的各種韌化機制發生之時機與強度。記錄應力、軸向應變與側向應變增量來計算即時體積模數、即時波松比值和即時楊氏模數。然後將這些即時的機械性質與線彈性變形下的機械性質相互比較，並且分析各種非彈性變形行為是由於何種韌化機制所造成如相變化與晶域重排以及其強度。
    結果顯示材料在承受壓-拉應力負載過程中，應力應變曲線迴路位置變化大，表示有明顯的相變化發生。其結果相較於單純執行拉伸應力循環或壓縮應力循環實驗所產生的非彈性變形行為還要強烈，是以相變化為主的韌化機制。

    The specimens are in the form of a thin plate and subjected to a plane stress loading. The timing and intensity of any kind of toughening mechanisms have been observed when the specimen is subjected to the tensile-compressive or simple tension cyclic loadings. Instantaneous bulk modulus, instantaneous Poisson’s ratio and instantaneous Young’s modulus are derived from the recorded stress-strain curves. Then those instantaneous mechanical properties are compared with those in linear elastic deformation to analyze the occurring intensity of various kind of inelastic deformation, such as phase transformation and domain reorientation.

    It has been shown that substantial inelastic deformation, especially phase transformation and its reverse deformation, occurs in the alternating tensile-compressive loadings. The intensity of this kind of toughening mechanism in this alternating loading is much higher than that in pure tension or compression.

    目 錄 頁次 中文摘要.............................................. I 英文摘要.............................................. II 致謝.................................................. III 目錄.................................................. IV 符號索引.............................................. VI 圖表索引.............................................. VII 第一章 前言........................................... 1 1.1 陶瓷材料的背景.................................... 2 1.2 研究動機與目的.................................... 3 第二章 文獻探討與對照分析............................. 5 2.1 正方相氧化鋯...................................... 5 2.2應力誘發麻田散體相變韌化........................... 9 2.3晶域重排........................................... 11 2.4文獻理論之對照分析................................. 15 第三章 實驗設備及數據量測............................. 17 3.1 MTS材料試驗機簡介................................. 17 3.2 實驗試片製作...................................... 21 3.3 應變值量測........................................ 27 3.4 實驗數據計算...................................... 29 第四章 實驗方法與步驟................................. 31 4.1 實驗方法.......................................... 31 4.2 實驗規劃.......................................... 34 4.3 實驗步驟.......................................... 35 4.2.1 試片A之實驗................................. 35 4.2.2試片B之實驗.................................. 36 4.2.3試片C之實驗.................................. 37 第五章 實驗結果與討論................................. 39 5.1 試片A之實驗分析................................... 40 5.2 試片B之實驗分析................................... 41 5.3 試片C之實驗分析................................... 48 第六章 結論........................................... 80 參考文獻.............................................. 81 作者簡介.............................................. 83

    參考文獻

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