在自制的微动疲劳试验装置上进行钢芯铝绞导线(ACSR)的微动疲劳试验,采用扫描电子显微镜观察分析内、外层铝股线断口特征,研究其微动疲劳断裂机制.结果表明:铝股线的断股大多发生于导线与线夹的最后接触点处.微动振幅为1.0 mm时,在较低循环周次下(1.6×107),铝股线只发生正断；随着循环次数增加,铝股线断股数量增加,且发生45°及“V”形断裂.铝股线疲劳断口由疲劳源区、疲劳裂纹扩展区、瞬断区构成,呈现弯曲疲劳和扭转疲劳两种不同的断裂方式.
参考文献
| [1] | C.R.F. Azevedo;A.M.D. Henriques;A.R. Pulino Filho .Fretting fatigue in overhead conductors: Rig design and failure analysis of a Grosbeak aluminium cable steel reinforced conductor[J].Engineering failure analysis,2009(1):136-151. |
| [2] | Ferguson J.M.;Gibbon R.R. .Overhead transmission lines-refurbishment and developments[J].Power engineering journal,1994(3):109-118. |
| [3] | R. K. Aggarwal;A. T. Johns;J. A. S. B. Jayasinghe;W. Su .An overview of the condition monitoring of overhead lines[J].Electric Power Systems Research,2000(1):15-22. |
| [4] | Ouaki B.;Goudreau S.;Cardou A.;Fiset M. .Fretting fatigue analysis of aluminum conductor wires near the suspension clamp: metallurgical and fracture mechanics analysis[J].The Journal of Strain Analysis for Engineering Design,2003(2):133-147. |
| [5] | Z. R. Zhou;A. Cardou;S. Goudreau;M. Fiset .Fundamental investigations of electrical conductor fretting fatigue[J].Tribology International,1996(3):221-232. |
| [6] | C.R.F. Azevedo;T. Cescon .Failure analysis of aluminum cable steel reinforced (ACSR) conductor of the transmission line crossing the Parana River[J].Engineering failure analysis,2002(6):645-664. |
| [7] | 陈荐,黄志杰,李录平,晋凤华.架空导线微动磨损表面的微观分析[J].润滑与密封,2004(06):24-26. |
| [8] | GB/T 17048-1997.GB/T 17048-1997.架空绞线用硬铝线[S].,1997. |
| [9] | YB/T 5004-2001.YB/T 5004-2001,镀锌钢绞线[S].,2001. |
| [10] | 周仲荣;VICENT L.微动磨损[M].北京:科学出版社,2002 |
| [11] | 陈国宏,王家庆,张建堃,张涛,徐光青,汤文明.钢芯Al绞导线架空导线微动磨损行为[J].润滑与密封,2010(05):55-59,84. |
| [12] | 何明鉴.机械构件的微动疲劳[M].北京:国防工业出版社,1994 |
| [13] | ZHOU Z R;SAUGER E;LIU J J;VINCENT L .Nucleation and early growth of tribologically transformed structure (TTS)induced by fretting[J].Wear,1997,212:50-58. |
| [14] | 朱曼吴,周仲荣,刘家浚.摩擦学白层的研究现状[J].摩擦学学报,1999(03):281. |
| [15] | Fellows LJ.;Hills DA.;Nowell D. .ANALYSIS OF CRACK INITIATION AND PROPAGATION IN FRETTING FATIGUE - THE EFFECTIVE INITIAL FLAW SIZE METHODOLOGY[J].Fatigue & Fracture of Engineering Materials and Structures,1997(1):61-70. |
| [16] | 赵建生.断裂力学及断裂物理[M].武汉:华中科技大学出版社,2003 |
| [17] | Marco Boniardi;Silvia Cincera;Fabrizio D'Errico;Chiara Tagliabue .Fretting Fatigue Phenomena on an all Aluminium Alloy Conductor[J].Key engineering materials,2007(348/349):5-8. |
| [18] | 崔约贤;王长利.金属断口分析[M].哈尔滨:哈尔滨工业大学出版社,1998 |
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