弹片热机械疲劳试验方法研究及设计
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摘要
针对弹片的热机械疲劳(TMF)试验要求,采用机械设计技术、机电技术、冷却技术、计算机技术和数据采集技术,提出了压力载荷和热载荷的加载方法,建立了2种载荷5个试验件的并联试验控制系统,并设计了弹片热机械疲劳试验器。试验结果表明:该系统能够同时模拟服役环境下弹片的压力载荷和热载荷。利用该试验系统进行了弹片的热机械疲劳试验,试验结果再现了弹片在服役状态下的失效模式。试验系统具有良好的重复度、较高的加载频率和加载精度。压力载荷最大相对误差为2.4%,绝对误差小于0.5N。温度载荷最大相对误差为3.55%,最大绝对误差为3.89℃。
Targeting the requirements of thermal mechanical fatigue(TMF)test for elastic sheet,the method of loading pressure and thermal loads was put forward using mechanical design technology,mechanical and electrical technology,cooling technology and data acquisition technology,aparallel test control system of two parallel loads,five test pieces was set up,and a thermal mechanical low cycle fatigue exerciser for elastic sheet was designed.Test results showed that,the system can simulate both the pressure load and thermal load of the elastic sheet in the service environment.The thermal mechanical low cycle fatigue test of elastic sheet was carried out by this test system,and the failure modes of elastic sheet in service state were found.The test system had good repeatability,high loading frequency and loading accuracy.The maximum relative error of pressure load was 2.4%,and the absolute error was less than 0.5 N.The maximum relative error of temperature load was3.55%,and the maximum absolute error was 3.89℃.
Targeting the requirements of thermal mechanical fatigue(TMF)test for elastic sheet,the method of loading pressure and thermal loads was put forward using mechanical design technology,mechanical and electrical technology,cooling technology and data acquisition technology,aparallel test control system of two parallel loads,five test pieces was set up,and a thermal mechanical low cycle fatigue exerciser for elastic sheet was designed.Test results showed that,the system can simulate both the pressure load and thermal load of the elastic sheet in the service environment.The thermal mechanical low cycle fatigue test of elastic sheet was carried out by this test system,and the failure modes of elastic sheet in service state were found.The test system had good repeatability,high loading frequency and loading accuracy.The maximum relative error of pressure load was 2.4%,and the absolute error was less than 0.5 N.The maximum relative error of temperature load was3.55%,and the maximum absolute error was 3.89℃.
引文
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[2]孙万超,陆山.考虑应力集中的镍基单晶合金低周疲劳公式[J].应用力学学报,2013,30(2):273-277.SUN Wanchao,LU Shan.Fatigue life prediction of single crystal nickel-based superalloys by considering stress concentration[J].Chinese Journal of Applied Mechanics,2013,30(2):273-277.(in Chinese)
[3]苏清友,孔瑞莲,陈筱雄,等.航空涡喷、涡扇发动机主要零部件定寿指南[M].北京:航空工业出版社,2004.
[4]王荣桥,荆甫雷,胡殿印.单晶涡轮叶片热机械疲劳试验技术[J].航空动力学报,2013,28(2):252-258.WANG Rongqiao,JING Pulei,HU Dianyin.Experimental setup for testing thermo-mechanical fatigue of single crystal turbine blades[J].Journal of Aerospace Power,2013,28(2):252-258.(in Chinese)
[5] EGGERTSON E,KAPULLA R.Turbulent mixing and its effects on thermal fatigue in nuclear reactors[J].World Academy of Science Engineering and Technology,2011,76(3):206-213.
[6] KOIEHIRO E,SATOSHI S,KAZUYOSHI S,et al.Thermal fatigue experiment of screw cooling tube under one-sided heating condition[J].Journal of Nuclear Materials,2004,329(1):820-824.
[7] ANEELET O,CHAPULIOT S.Development of a test for the analysis of the harmful ines of a 3Dthermal fatigue loading in tubes[J].International Journal of Fatigue,2007,29(3):549-564.
[8] MAILLOT V,FISSOLO A.Thermal fatigue crack networks parameters and stability:an experimental study[J].International Journal of Solids and Structures,2005,42(2):759-769.
[9] MEROLA M,MATERA R,SEVINI F.Experimental results of the thermal fatigue tests for I.A.E.A.benchmark components[J].Journal of Nuclear Materials,1996,233(11):620-625.
[10] KATSUHIKO S,TSUYOSHI T.Low cycle thermal fatigue and microstructural change of ACZ-T6aluminum alloy[J].International Journal of Fatigue,2006,28(3):203-210.
[11] PANDA P,KANNAN T,DUBOIS J,et al.Thermal shock and thermal fatigue study of alumina[J].Journal of the European Ceramic Society,2002,22(13):2187-2196.
[12] LIM J,KUK K,SHIN S,et al.Failure mechanisms in thermal inkjet print head analyzed by experiments and numerical simulation[J].Microelectronics Reliability,2005,45(3/4):473-478.
[13] AMIABLE S,CHAPULIOT S,CONSTANTINESEU A,et al.A comparison of life time prediction methods for a thermal fatigue experiment[J].International Journal of Fatigue,2006,28(7):692-706.
[14] AKINC M,JONGEN N,LEMAITRE J,et al.Synthesis of nickel hydroxide powders by urea decomposition[J].Journal of the European Ceramic Society,1998,18(11):1559-1564.
[15]夏鹏成,韩冠朋,谢鲲,等.高温合金热疲劳实验机的研制及实验研究[J].材料导报,2013,27(12):20-22.XIA Pengcheng,HAN Guanpeng,XIE Kun,et al.Development and experimental study of high temperature alloy thermal fatigue tester[J].Materials Review,2013,27(12):20-22.(in Chinese)
[16]蔡乔芳.加热炉[M].北京:冶金工业出版社,2007.
[17] BYCHKOV N,LUKASH V,NOZHNITSKY Y,et al.Investigations of thermomechanical fatigue for optimization of design and production process solutions for gas turbine engine parts[J].International Journal of Fatigue,2008,30(2):305-312.
[18] VERRILLI M,CALOMINO A,ROBINSON R,et al.Ceramic matrix composite vane subelement testing in a gas turbine environment[R].ASME Paper GT2004-53970,2004.
[19] WRIGHT P.Influence of cyclic strain on life of a PVD TBC[J].Materials Science and Engineering:A,1998,245(2):191-200.
[20]王洪斌.涡轮叶片热/机械复合疲劳试验方法研究[J].航空发动机,2007,33(2):7-11.WANG Hongbin.Test methods on thermal/mechanical fatigue(TMF)of turbine blade[J].Aeroengine,2007,33(2):7-11.(in Chinese)
[21] SCHOLZ A,SCHMIDT A,WALTHER H,et al.Experiences in determination of TMF,LCF and creep life of CMSX-4in four-point bending experiments[J].International Journal of Fatigue,2008,30(2):357-362.
[22]施惠基.高温合金材料热机械疲劳实验技术[J].实验力学,1997,12(4):500-505.SHI Huiji.Techniques for thermo-mechanical fatigue testing on high temperature alloys[J].Journal of Experimental Mechanics,1997,12(4):500-505.(in Chinese)