采用红外热像法对循环载荷下 AZ31B 镁合金电子束焊接接头的疲劳行为进行研究。对试件在疲劳试验中表面温度演变规律和产热机制进行分析，并在此基础上对其疲劳极限进行预测，同时通过分析试件表面温度和热点区域的演变规律对其疲劳损伤进行定量评估。结果表明：采用红外热像法不仅能够实现对镁合金电子束焊接接头疲劳极限的快速预测，而且可以对其疲劳损伤进行实时定量监测。镁合金电子束焊接接头疲劳极限预测结果同传统 S?N 试验结果保持一致。试件表面温度以及热点区域演变可作为评价镁合金电子束焊接接头疲劳损伤的有效依据。
Fatigue behavior of AZ31B magnesium alloy electron beam welded joint undergoing cyclic loading was investigated by infrared thermography. Temperature evolution throughout a fatigue process was presented and the mechanism of heat generationwas discussed. Fatigue limit of the welded joint was predicted and the fatigue damage was also assessed based ontheevolution of the temperatureand hotspot zone on the specimen surfaceduring fatigue tests. The presented results show that infrared thermography can not onlyquicklypredict the fatigue behavior of the welded joint, but also qualitatively identify the evolution of fatigue damage in real time. It is found that the predicted fatigue limit agrees well with the conventionalS?Nexperimental results. The evolution of the temperatureand hotspot zone on the specimen surface can be an effectivefatigue damage indicatorfor effectiveevaluationof magnesium alloy electron beam welded joint.
参考文献
| [1] | E. Kalatehmollaei;H. Mahmoudi-Asl;H. Jahed.An asymmetric elastic-plastic analysis of the load-controlled rotating bending test and its application in the fatigue life estimation of wrought magnesium AZ31B[J].International Journal of Fatigue,2014:33-41. |
| [2] | F. Lv;F. Yang;Q. Q. Duan;Y. S. Yang;S. D. Wu;S. X. Li;Z. F. Zhang.Fatigue properties of rolled magnesium alloy (AZ31) sheet: Influence of specimen orientation[J].International Journal of Fatigue,20115(5):672-682. |
| [3] | Chao He;Chongxiang Huang;Yongjie Liu;Qingyuan Wang.Fatigue damage evaluation of low-alloy steel welded joints in fusion zone and heat affected zone based on frequency response changes in gigacycle fatigue[J].International Journal of Fatigue,2014:297-303. |
| [4] | G. Crapi;V. Crupi;E. Guglielmino.Fatigue assessment of welded joints using critical distance and Other methods[J].Engineering failure analysis,20051(1):129-142. |
| [5] | Ozler Karakas.Consideration of mean-stress effects on fatigue life of welded magnesium joints by the application of the Smith-Watson-Topper and reference radius concepts[J].International Journal of Fatigue,2013:1-17. |
| [6] | C. M. Sonsino;W. Fricke;F. de Bruyne;A. Hoppe;A. Ahmadi;G. Zhang.Notch stress concepts for the fatigue assessment of welded joints - Background and applications[J].International Journal of Fatigue,20121(1):2-16. |
| [7] | Mustafa Aygul;Mathias Bokesjo;Mohsen Heshmati;Mohammad Al-Emrani.A comparative study of different fatigue failure assessments of welded bridge details[J].International Journal of Fatigue,2013:62-72. |
| [8] | L. Zhang;X. S. Liu;S. H. Wu;Z. Q. Ma;H. Y. Fang.Rapid determination of fatigue life based on temperature evolution[J].International Journal of Fatigue,2013:1-6. |
| [9] | M. Amiri;M.M. Khonsari.Life prediction of metals undergoing fatigue load based on temperature evolution[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20106(6):1555-1559. |
| [10] | Fan, J.L.;Guo, X.L.;Wu, C.W.;Zhao, Y.G..Research on fatigue behavior evaluation and fatigue fracture mechanisms of cruciform welded joints[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,201129/30(29/30):8417-8427. |
| [11] | M Naderi;MM Khonsari.Real-time fatigue life monitoring based on thermodynamic entropy[J].Structural health monitoring,20112(2):189-197. |
| [12] | X. D. Li;H. Zhang;D. L. Wu;X. Liu;J. Y. Liu.Adopting lock-in infrared thermography technique for rapid determination of fatigue limit of aluminum alloy riveted component and affection to determined result caused by initial stress[J].International Journal of Fatigue,20121(1):18-23. |
| [13] | G. La Rosa;A. Risitano.Thermographic methodology for rapid determination of the fatigue limit of materials and mechanical components[J].International Journal of Fatigue,20001(1):65-73. |
| [14] | G. Fargione;A. Geraci;G. La Rosa.Rapid determination of the fatigue curve by the thermographic method[J].International Journal of Fatigue,20021(1):11-19. |
| [15] | V. Crupi.An Unifying Approach to assess the structural strength[J].International Journal of Fatigue,20087(7):1150-1159. |
| [16] | Minh Phong Luong.Fatigue limit evaluation of metals using an infrared thermographic technique[J].Mechanics of materials,19981/4(1/4):155-163. |
| [17] | F. Cura;G. Curti;R. Sesana.A new iteration method for the thermographic determination of fatigue limit in steels[J].International Journal of Fatigue,20054(4):453-459. |
| [18] | P. Williams;M. Liakat;M.M. Khonsari;O.M. Kabir.A thermographic method for remaining fatigue life prediction of welded joints[J].Materials & design,2013Oct.(Oct.):916-923. |
| [19] | N. Ranc;D. Wagner;P.C. Paris.Study of thermal effects associated with crack propagation during very high cycle fatigue tests[J].Acta materialia,200815(15):4012-4021. |
| [20] | Thomas Ummenhofer;Justus Medgenberg.On the use of infrared thermography for the analysis of fatigue damage processes in welded joints[J].International Journal of Fatigue,20091(1):130-137. |
| [21] | 闫志峰;张红霞;王文先;王凯;裴飞飞.基于红外热像法的AZ31B镁合金温度演化与疲劳寿命预测[J].中国有色金属学报（英文版）,2013(7):1942-1948. |
| [22] | Cui, Z. Q.;Yang, H. W.;Wang, W. X.;Yan, Z. F.;Ma, Z. Z.;Xu, B. S.;Xu, H. Y..Research on fatigue crack growth behavior of AZ31B magnesium alloy electron beam welded joints based on temperature distribution around the crack tip[J].Engineering Fracture Mechanics,2015:14-23. |
| [23] | T.R. Emery;J.M. Dulieu-Barton.Thermoelastic Stress Analysis of damage mechanisms in composite materials[J].Composites, Part A. Applied science and manufacturing,201012(12):1729-1742. |
| [24] | A.E. Morabito;A. Chrysochoos;V. Dattoma.Analysis of heat sources accompanying the fatigue of 2024 T3 aluminium alloys[J].International Journal of Fatigue,20075(5):977-984. |
| [25] | Inge Lotsberg.Stress concentrations at butt welds in pipelines[J].Marine structures,20092(2):335-337. |
| [26] | Luo, Y.;Ye, H.;Du, C.;Xu, H..Influence of focusing thermal effect upon AZ91D magnesium alloy weld during vacuum electron beam welding[J].Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology,20129(9):1262-1267. |
| [27] | Y. Uematsu;K. Tokaji;M. Kamakura.Effect of extrusion conditions on grain refinement and fatigue behaviour in magnesium alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20061/2(1/2):131-140. |
| [28] | W. Mocko.The influence of stress-controlled tensile fatigue loading on the stress-strain characteristics of AISI 1045 steel[J].Materials & design,2014Jun.(Jun.):145-153. |
| [29] | Pandey KN;Chand S.Analysis of temperature distribution near the crack tip under constant amplitude loading[J].Fatigue & Fracture of Engineering Materials and Structures,20085(5):316-326. |
| [30] | M. Amiri;M. M. Khonsari.Rapid determination of fatigue failure based on temperature evolution: Fully reversed bending load[J].International Journal of Fatigue,20102(2):382-389. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%