| 炭纤维/ 环氧复合材料单面修补中心裂纹铝合金板的静态和疲劳特性 |
| |
| 引用本文： | 杨孚标,肖加余,江大志,曾竟成,王遵.炭纤维/ 环氧复合材料单面修补中心裂纹铝合金板的静态和疲劳特性[J].复合材料学报,2007,24(3):1-6. |
| |
| 作者姓名： | 杨孚标 肖加余 江大志 曾竟成 王遵 |
| |
| 作者单位： | 国防科学技术大学,航天与材料工程学院,长沙,410073 |
| |
| 摘 要： | 利用真空袋压工艺, 采用单向炭纤维复合材料补片对中心裂纹铝合金板进行了单面胶接修补。测试了复合材料修补板的静态拉伸强度及修补板在拉拉疲劳过程中的裂纹扩展、界面脱粘和剩余拉伸强度等疲劳性能。结果表明, 复合材料补片胶接修补能有效地提高裂纹板的破坏强度和刚度, 降低裂纹板的疲劳裂纹扩展速率, 提高其疲劳寿命。裂纹板经单向炭纤维/ 环氧复合材料补片修补后, 其破坏强度从311. 48 MPa 提高到364. 74 MPa ,疲劳寿命从32217 次提高到77546 次。疲劳导致修补结构的粘接界面脱粘, 脱粘区域近似椭圆形; 脱粘面积随疲劳周次的增加而增加, 且增加的幅度与疲劳周次相关。
|
| 关 键 词： | 复合材料补片 破坏强度 脱粘 疲劳寿命 |
| 文章编号： | 1000-3851（2007）03-0001-06 |
| 收稿时间： | 2006-06-19 |
| 修稿时间： | 2006-11-08 |
Static characteristics and fatigue behavior of the center-cracked aluminumplates one-sidedly bonded with composite patches |
| |
| YANG Fubiao,XIAO Jiayu,JIANG Dazhi,ZENG Jingcheng,WANG Zun.Static characteristics and fatigue behavior of the center-cracked aluminumplates one-sidedly bonded with composite patches[J].Acta Materiae Compositae Sinica,2007,24(3):1-6. |
| |
| Authors: | YANG Fubiao XIAO Jiayu JIANG Dazhi ZENG Jingcheng WANG Zun |
| |
| Affiliation: | College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China |
| |
| Abstract: | The center-cracked aluminum alloy plates were one-sidedly bonded with unidirectional carbon fiber/epoxy composite patches by the vacuum-bagging process. The tensile strength of the bonded plate was measured, the crack propagation, the interface disbond between the patch and the plate, and the residual tensile strength of the bonded plates were also investigated. The results show that both the tensile strength and the stiffness of the center-cracked plates bonded with composite patches increase significantly. The crack propagation rate of the bonded plate is smaller than that of the cracked plate, and the fatigue life of the bonded plate is longer than that of the cracked plate. The tensile strength and the fatigue life of the bonded plates are 364.74 MPa and 77546 cycles, respectively, while those of the cracked plates are 311.48 MPa and 32217 cycles, respectively. An elliptical debond area between the composite patches and cracked plate is found during the tension-tension fatigue testing. The interface debond area increases with increasing the fatigue cyclic number, and the magnitude of the increase is related with the fatigue cyclic number. |
| |
| Keywords: | composite patch tensile strength debond fatigue life |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《复合材料学报》浏览原始摘要信息 |
|
点击此处可从《复合材料学报》下载全文 |
|
