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黏弹阻尼器拉压疲劳损伤三维成像分析

张宝双 敖波 丁阳

张宝双, 敖波, 丁阳. 黏弹阻尼器拉压疲劳损伤三维成像分析[J]. 航空动力学报, 2020, 35(12): 2635-2641. doi: 10.13224/j.cnki.jasp.2020.12.017
引用本文: 张宝双, 敖波, 丁阳. 黏弹阻尼器拉压疲劳损伤三维成像分析[J]. 航空动力学报, 2020, 35(12): 2635-2641. doi: 10.13224/j.cnki.jasp.2020.12.017
ZHANG Baoshuang, AO Bo, DING Yang. Three-dimensional imaging analysis of tension-compression fatigue damage in viscoelastic damper[J]. Journal of Aerospace Power, 2020, 35(12): 2635-2641. doi: 10.13224/j.cnki.jasp.2020.12.017
Citation: ZHANG Baoshuang, AO Bo, DING Yang. Three-dimensional imaging analysis of tension-compression fatigue damage in viscoelastic damper[J]. Journal of Aerospace Power, 2020, 35(12): 2635-2641. doi: 10.13224/j.cnki.jasp.2020.12.017

黏弹阻尼器拉压疲劳损伤三维成像分析

doi: 10.13224/j.cnki.jasp.2020.12.017
基金项目: 无损检测技术教育部重点实验室开放基金(EW201708253)

Three-dimensional imaging analysis of tension-compression fatigue damage in viscoelastic damper

  • 摘要: 采用显微CT(micro-computed tomography)对阻尼器结构分段进行了三维观察,成像分辨率为91.89 μm。通过三维分割成功提取了橡胶层空隙、开裂缺陷,并定量分析空隙缺陷的直径、总体积等几何特征参数。为了提高成像分辨率,对单个空隙缺陷进行局部高分辨显微CT成像及三维可视化分析,获取单个空隙形貌信息。结果表明:黏弹阻尼器以产生脱黏、空隙、开裂缺陷为主,上、下段橡胶层空隙最大直径分别为13.12、12.21 mm,发现上、下段端部存在开裂现象,环状裂纹体向上延伸至橡胶层表面,向下延伸至铝合金内筒外壁。局部显微CT三维成像分辨率为20.85 μm,结果显示单个空隙表面形貌存在褶皱、凹坑现象,但未发现微小裂纹。DR(digital radiography)成像实验结果表明通过X射线切向照相检测黏弹阻尼器橡胶层脱黏、空隙缺陷是可行的。

     

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出版历程
  • 收稿日期:  2020-05-20
  • 刊出日期:  2020-12-28

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