5052鋁合金TIG對接銲件疲勞性質與疲勞壽命評估之研究

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：23

、訪客IP：3.146.35.53

姓名

莊信祥(Shin-shiang Juang) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

5052鋁合金TIG對接銲件疲勞性質與疲勞壽命評估之研究

相關論文

★ 三次元量床之虛擬儀器教學與訓練系統之設計與開發	★ 駕駛模擬器技術開發及其在駕駛行為研究之應用
★ 電源模組老化因子與加速試驗模型之研究	★ 應用駕駛模擬器探討語音防撞警示系統對駕駛行為之影響
★ 遠距健康監測與復健系統之開發與研究	★ 藥柱低週疲勞特性與壽限評估模式之研究
★ 非接觸式電子經緯儀電腦模擬教學系統之研究	★ 適應性巡航控制系統對於駕駛績效影響之研究
★ 車輛零組件路況模擬系統之開發研究	★ 應用殘障駕駛模擬器探討失衡路況對人體重心影響之研究
★ 聚縮醛(POM)機械性質之射出成型條件最佳化研究	★ 駕駛模擬儀之開發驗證及應用於駕駛疲勞之研究
★ 即時眼部狀態偵測系統之研究	★ 短玻璃纖維強化聚縮醛射出成型條件最佳化與機械性質之研究
★ 手推輪椅虛擬實境系統開發之研究	★ 應用駕駛績效預測車輛碰撞風險之研究

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

[檢視]

[下載]

本電子論文使用權限為同意立即開放。
已達開放權限電子全文僅授權使用者為學術研究之目的，進行個人非營利性質之檢索、閱讀、列印。
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。

摘要(中)

本研究以5052-H32鋁合金為實驗材料，選擇對接接頭，進行惰氣鎢極電弧銲接(TIG銲)，對於鋁合金銲接結構件在等負荷振幅及變動負荷振幅下之疲勞性質及疲勞壽命分析模式進行深入研究。
研究結果顯示TIG銲疲勞試片斷裂點大部分是在銲道上且靠近熱影響區的位置。5052-H32 TIG對接銲件之疲勞強度(S-N曲線)比IIW、BS8118及Eurcode 9等規範之對應的設計曲線高。IIW規範之設計曲線與實驗結果最接近，尤其是在低壽命區域。在高壽命區域，各規範的設計曲線也越保守估計。綜合拉張平均應力歷程(TRN歷程)及輕微壓縮平均應力歷程(BRK歷程)變動振幅疲勞測試結果，建議以Gerber法進行平均應力修正，可得較佳的疲勞壽命預測。5052-H32鋁合金TIG對接銲件在固定振幅疲勞及變動振幅疲勞斷面上皆有疲勞紋產生。

摘要(英)

In this study, 5052-H32 aluminum alloy weldment with butt joint were produced by inert gas tungsten arc welding (TIG welding). The fatigue properties of welded aluminum structures under constant and variable amplitude loadings were obtained, respectively.
The results showed that fracture points of TIG fatigue specimens were mostly at the weld near the heat affected zone, tungsten inert gas welding the fatigue strengths (S-N curves) of 5052-H32 aluminum butt joints were higher than those of design curves proposed by IIW, BS8118 and Eurocode 9 standards. In the short life region, the IIW design curve was the best one which is close to the present experimental results. In the long life region, all the design curves of specifications were more conservative.
With respect to mean stress correction in fatigue life prediction, Gerber method is the best one for 5052-H32 aluminum TIG butt joints. Both of constant amplitude fatigue loading and variable amplitude fatigue loading produce fatigue striations infracture surfaces.

關鍵字(中)

★ 5052
★ 鋁合金
★ TIG銲接
★ 疲勞壽命

關鍵字(英)

★ 5052
★ Aluminium Alloy
★ Inert Gas Tungsten Arc Welding
★ Fatigue Life

論文目次

論文電子檔授權書 #
紙本論文延後公開/下架申請書 #
論文指導教授推薦信 #
口試委員會審定書 #
中文摘要 i
ABSTRACT ii
誌謝 iii
目錄 iv
圖目錄 vii
表目錄 x
符號說明 xi
第一章緒論 1
1.1研究動機 1
1.2研究目的 2
第二章文獻及理論回顧 3
2.1 鋁合金介紹 3
2.2 鋁合金銲接 5
2.2.1 惰性鎢極氣體保護銲(TIG銲) 5
2.2.2 TIG銲接各區域的影響 6
2.2.3 TIG銲接之文獻回顧 8
2.3 銲接結構疲勞壽命評估研究 9
2.3.1 常用熔融銲接結構疲勞設計規範 10
2.3.2 銲接疲勞之文獻回顧 14
2.3.3 銲接壽命影響因子 14
2.4 理論說明 16
2.4.1 應力-壽命曲線(S-N Curve) 17
2.4.2 平均應力的影響 18
2.4.3 循環計數 21
2.4.4 損傷累計 23
2.4.5 應力-壽命法 24
2.4.6 循序法 26
2.4.7 變動振幅 28
2.4.8 訊號壓縮 29
第三章實驗方法與設備 30
3.1實驗材料 31
3.2銲接加工 31
3.3標準試片加工 32
3.4金相觀察 33
3.5機械性質測試 35
3.5.1 硬度測試 35
3.5.2 拉伸測試 36
3.5.3 疲勞測試 36
3.5.4 SEM斷面分析 41
第四章結果與討論 42
4.1金相觀察 42
4.2硬度測試 44
4.3拉伸試驗 45
4.4等負荷振幅疲勞性質 47
4.5變動振幅疲勞性質 51
4.6拉伸試片SEM斷面分析 55
4.7疲勞試片SEM斷面觀察 56
第五章結論 60
5.1.未來展望 61
參考文獻 62
附件A BS 8118規範相關資料 66
附件B Eurcode 9規範相關資料 69
附件C IIW規範相關資料 71

參考文獻

[1] H. O. Fuchs, “Metal Fatigue in Engineering,” John-Wiley & Sons Inc. 1980.
[2] http://www.science.globalsino.com/1/1science9654.html
[3] 黃振賢，「機械材料」，文晶圖書股份有限公司，第311~331頁，民國69年。
[4] 賴耿陽，「非鐵金屬材料」，復漢出版社，第151~168 頁，民國71 年。
[5] 趙光榮，「氬氣鎢極電銲能力本位訓練教材_鋁板平銲機本銲道銲接」，行政院勞工委員會職業訓練局，民國90。
[6] 董孟軒，「Sc與Cu含量對A201合金銲接特性之研究」，國立中央大學，碩士論文，民國93年。
[7] G. J. Zhang, Z. H. Yan, L. Wu, “Visual sensing of weld pool in variable polarity TIG welding of aluminium alloy,” Transactions of Nonferrous Metals Society of China, Vol. 16, pp. 522-526, 2006.
[8] X. H. Wang, J. T. Niu, S. K. Guan, L. J. Wang, D. F. Cheng, “Investigation on TIG welding of SiCp-reinforced aluminum–matrix composite using mixed shielding gas and Al–Si filler,” Materials Science and Engineering, Vol. 499, pp. 106-110, 2009.
[9] 莊弘瑋，「活性助銲劑與銲接製程參數對6061鋁合金銲道熔深能力之研究」，國立交通大學，碩士論文，民國99年。
[10] 唐自勇，「A7050 與A2024 鋁合金異質銲接與銲後熱處理」，國立交通大學，碩士論文，民國100年。
[11] S. J. Maddox, “Review of fatigue assessment procedures for welded aluminium structures,” International Journal of Fatigue, Vol. 25, pp. 1359–1378, 2003.

[12] M. Matema, A. Koursaris, A. Paterson, “Fatigue properties of fabricated aluminium I-beams,” Journal of The South African Institute of Mining and Metallurgy, Vol. 105, No. 3, pp. 177-181, March 2005.
[13] T. Matic, Z. Domazet, “Determination of structural stress for fatigue analysis of welded aluminium components subjected to bending,” Fatigue and Fracture of Engineering Materials and Structures, Vol. 28, No. 9, pp. 835-844, September 2005.
[14] M. Ericsson, R. Sandström, ”Influence of welding speed on the fatigue of friction stir welds, and comparison with MIG and TIG”, International Journal of Fatigue, Vol. 25, pp. 1379-1387, 2003.
[15] J. A. M. Pinho-da-Cruz, J. A. M. Ferreira, J. D. M. Costa, L. F. P. Borrego, “Fatigue analysis of thin AlMgSi welded joints under constant and variable amplitude block loadings,” Thin-Walled Structures, Vol. 41, No. 5, pp. 389-402, May 2003.
[16] N. Ye, T. Moan, “Improving fatigue life for aluminium cruciform joints by weld toe grinding,” Fatigue and Fracture of Engineering Materials and Structures, Vol. 31, No. 2, pp. 152-163, February 2008.
[17] BS 8118:1991. Structural use of aluminium—part 1 code of practice for design. London: BSI, 1991.
[18] Eurocode 9. Design of aluminium structures: part 1-3: structures susceptible to fatigue. Brussels: CEN, 1998 ENV, 1999-2.
[19] International Institute of Welding. Fatigue design of welded joints and components. Abington, Cambridge: Abington Publishing, 1996.
[20] V. Grubišic, “Service strength of welded aluminium structures influences and validation,” Welding in the World, Vol. 51, SPEC. ISS, pp. 1-16, July 15, 2007.
[21] C. D. M. Liljedahl, O. Zanellato, M. E. Fitzpatrick, J. Lin, L. Edwards, “The effect of weld residual stresses and their re-distribution with crack growth during fatigue under constant amplitude loading,” International Journal of Fatigue, Vol. 32, No. 4, pp. 735-743, 2010.
[22] V. N. Drew, “Fatigue Considerations in Welded Structure,” SAE Technical Paper No. 820695, Society of Automotive Engineers, Warrendale, PA, 1982.
[23] J. Y. Yung, F. V. Lawrence, “Anallytical and Graphical Aids for the Fatigue Design of Weldments,” SAE Paper No. 850803, Society of Automotive Engineers, Warrendale, PA, 1985.
[24] H. P. Lieurade, “Fatigue in Welded Constructions,” Institute de Recherches de la siderurgie Franchise, pp. 19-49.
[25] T. R. Gurney, “Fatigue of Welded Structures,” Cambridge University Press, London, second ed., pp. 1, 1979.
[26] V. N. Drew, “Fatigue Considerations in Welded Structure,” SAE Technical Paper No. 820695, Society of Automotive Engineers, Warrendale, PA, 1982.
[27] 黃嘉彥，「工程結構之疲勞與破壞」，徐氏基金會，民國87。
[28] M. Matsuishi, T. Endo, “Fatigue of Metals Subjected to Varying Stress,” paper presented to Japan Society of Mechanical Engineers, Fukuoka, Japan, March 1968.
[29] American Society for Testing and Materials, Annual Book of ASTM Standards, Section 3: Metals Test Methods and Analytical Procedure, Vol. 03.01 - Metals-Mechanical Testing; Elevated and Low- Temperature Tests, ASTM, Philadelphia, 1986, pp. 836-848.
[30] J. A. Bannantine, J. J. Comer, J. L. Hardrock, Fundamentals of Metal Fatigue Analysis, Prentice Hall, 1990.
[31] 陳裕城，「機械零組件之加速耐久分析」，國立中央大學，碩士論文，民國八十七年六月。
[32] A. Wohler, “Uber die Festigkeitversuche mit Eisen und Stahl,” Zeitschrift fur Bauwesen, Vol. VIII, X, XIII, XVI, and XX, 1860/70, Englishaccount of this work is in Engineering, Vol. 11, 1871.
[33] D. V. Nelson, H. O. Fuchs, “Predictions of Cumulative Fatigue Damage UsingCondensed Load Histories, in Fatigue under Complex Loading: Analyses andExperiments,” The Society of Automotive Engineers, Vol. AE-6, pp. 163-187, 1977.
[34] ASTM-E8: Standard Test Methods for Tension Testing of Metallic Materials, ASTM, 2012.
[35] ASTM-E466: Standard Practice for Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials, ASTM, 2012.
[36] ASTM-E407: Standard Practice for Microetching Metals and Alloys, ASTM, 2012.
[37] CNS 2115: Method of Vickers Hardness Test, CNS, 1983

指導教授

黃俊仁(Jiun-ren Hwang)

審核日期

2013-7-19

推文