102 航空材料学报 第32卷 明显滞后于其他层板。这可能与已有层板研究假定 各层铝板裂纹扩展速率的结果不一致,可能需针对 这种新型材料结果修正或重新发展与验证层板裂纹 扩展定量预测模型。 (5)新型混合层板外层铝板与胶膜间、胶膜与 内层铝板间均不产生分层,而内层铝板与预浸料 2007. [4]FREDELL R S,GUNNINK J W,BUCCI R J,et a1.” Carefree”hybrid wing structures for aging USAF transports [C].First International Conference on Damage Tolerance 0f Aircrafi Structures.2007. [5]ALDERLIESTEN R C.On the available relevant approa— ches for fatigue crack propagation prediction in Glare[J]. International Journal of Fatigue,2007,29:289—304. (内层胶膜)间沿裂纹方向成近似三角形分层;两种 类型层板分层形态和尺寸相当。 致谢:本研究所用混合层板成型由哈尔滨工业大学宋 欣教授、白士刚博士后及王时玉硕士完成。试样加工及疲劳 裂纹扩展试验过程中得到了北京航空材料研究院航空材料 [6]MARISSEN R.Fatigue Crack Growth in ARALL,A hybrid Aluminium—Aramid Composite Material,crack growth mechanisms and quantitative predictions of the crack growth rate[D].Delt,Netfherlands:Delft University of Technology,1988. 检测研究中心李淑芬工程师,东北大学谢里阳教授、张瑞金 教授及佟安时博士等的大力帮助 在此一并衷心感谢。 [7]GUO Y J,wu X R.A theoretical model for predicting crack growth in fiber reinforced metal laminates[J].Fa— 参考文献: JVE J.Fatigue of structures and materials[M]. [1] SCHISpringer—Verlag GmbH.2008:589—591. tigue and Fracture of Engineering Materials and Structures, 1998,21:1133—1145. [8]ALDERLIESTEN R C.Fatigue Crack Propagation and De— lamination Growth in Glare[D].Delft,Netherlands:The— sis,Delt Universifty of Technology,2005. VLOT A,GUNNINK J W.Fibre Metal Laminates,an in— [2] troduction f M 1.Dordrecht,The Netherlands:Kluwer Ac— ademic Publishers,2001:12—13. [9]ALDERLIESTEN R C.Fatigue Crack Growth Modelling in Glare[C]//Proceedings of the USAF Aircratf Structural Integrity Program Conference,San Antonio,Texas,USA, 2000. R0EBROEKS G H J J,HOOIJMEIJER P A,KROON E J [3] et a1.The development of CentrAl[C]//First International Conferenee on Damage Tolerance of Aircraft Structures. Fatigue Crack Propagation and Delamination Behavior of Advanced Fiber Metal Hybrid Laminate HUANG Xiao,LIU Jian—zhong (Beijing Institute of Aeronautical Materials,Beijing 100095,China) Abstract:To study damage tolerance behavior of one kind of advanced hybrid laminate,this article accomplished fatigue crack propa— gation test under R=0.1 or一1 for two kinds of saw—cut length and two kinds of lay—up.compared and analyzedⅡ-N data,obtained the delamination shape between each layers by etching the aluminium sheet.The result indicates that this advanced hybrid laminate obvi— ously displays a better fatigue crack propagation property than aluminium sheet under =0.1.The laminate with adhesive film around the prepreg performs a better fatigue crack propagation property than the laminate without adhesive film around the prepreg.The speci— men with shorter saw.cut length shows a better fatigue crack propagation property than the specimen with longer saw—cut length for the bridging mechanism.Crack in central aluminium sheet is shorter than the others.The delamination shape between inner aluminium sheet and prepreg presents a triangle. Key words:advanced hybrid laminate;fatigue crack propagation;delamination