博碩士論文 88323046 詳細資訊


姓名 許育銓(Yui-Quan Xu )  查詢紙本館藏   畢業系所 機械工程研究所
論文名稱 SA533B1壓力槽鋼材之高週疲勞壽限評估模式研究
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摘要(中) 本研究以反應器壓力槽材料SA533 B1鋼材為探討對象,進行等振幅與變動振幅負荷下之高週疲勞試驗,求取在不同應力水準、不同平均應力下之疲勞壽限,並與理論預測結果作比較,探討疲勞壽限評估模式之適用性與準確性。
等振幅疲勞實驗結果顯示,經由High Diagram的預測,可知SA533B1鋼材適合用Gerber的方程式來描述平均應力的影響。另外,從變動振幅疲勞之實驗值與理論預測值對照圖,可明確知道應力壽命法中的Gerber法的壽命預測較其他方法準確,故適用於預測SA533 B1鋼材之疲勞壽命。
關鍵字(中) ★ SA533鋼
★  壓力槽
★  壽限評估
★  變動振幅負荷
★  高週疲勞
關鍵字(英)
論文目次 摘要 I
致謝 II
總目錄 III
表目錄 VI
圖目錄 VII
符號說明 VIII
第一章、緒論 1
1- 1 研究動機與目的 1
1- 2 文獻回顧 2
第二章、理論說明 8
2-1 應力-壽命曲線(S-N Curve)9
2-2 平均應力的影響 10
2-3 循環計數 12
2-4 損傷累計 14
2-5 應力-壽命法 15
2-6 循序法與區間法 16
2-7 變動振幅疲勞 19
2-8 訊號壓縮 21
第三章、實驗設備及步驟 23
3-1 實驗設備 23
3-2 實驗步驟 24
3-2-1試片製作 24
3-2-2拉伸試驗 26
3-2-3高週疲勞試驗 26
3-2-4變動振幅疲勞試驗27
3-2-5金相觀察 28
3-2-6破斷面觀察 28
第四章、結果與討論 30
4-1 拉伸試驗與金相觀察 30
4-2 程式驗證 30
4-3 等負荷振幅疲勞試驗 31
4-4 變動負荷振幅疲勞試驗32
4-5 破斷面觀察 35
第五章、結論與未來發展 36
參考文獻 37
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指導教授 黃俊仁(Jiun-ren Hwang) 審核日期 2001-7-19
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