铝合金表面腐蚀损伤面积等效方法分析
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摘要
目的研究铝合金表面腐蚀损伤面积等效的方法。方法利用KH-7700三维光学显微镜进行腐蚀图像处理,通过椭圆等规则几何图形修正腐蚀损伤面积,并结合Gumbel、正态、双参数威布尔及对数正态四种分布模型行对腐蚀损伤修正面积进行分布检验分析。结果对比相关系数,得出腐蚀损伤修正面积服从正态分布模型优于Gumbel、对数正态及双参数威布尔三种分布模型。结论矩形内切椭圆能较真实地反映腐蚀损伤的面积,可为工程实践使用腐蚀损伤定量分析时,提供技术支持。
Objective To analyze equivalent method of surface corrosion damage area of aluminum alloy.Methods The KH-7700 3D optical microscopy was used for corrosion image processing. Elliptical rules of geometry were used to correct corrosion damage area. Combined with the Gumbel, normal, two-parameter Weibull and log normal model, the distribution analysis of corrected corrosion damage area was conducted. Results Compared with correlation coefficient, it was concluded that the corrosion damage area correction obeyed the normal distribution model superior to the Gumbel, two parameter Weibull and log normal model. Conclusion Rectangle inscribed ellipse more truly reflected the corrosion damage of the area, so it can provide technical support for quantitative analysis of corrosion damage in engineering practice.
Objective To analyze equivalent method of surface corrosion damage area of aluminum alloy.Methods The KH-7700 3D optical microscopy was used for corrosion image processing. Elliptical rules of geometry were used to correct corrosion damage area. Combined with the Gumbel, normal, two-parameter Weibull and log normal model, the distribution analysis of corrected corrosion damage area was conducted. Results Compared with correlation coefficient, it was concluded that the corrosion damage area correction obeyed the normal distribution model superior to the Gumbel, two parameter Weibull and log normal model. Conclusion Rectangle inscribed ellipse more truly reflected the corrosion damage of the area, so it can provide technical support for quantitative analysis of corrosion damage in engineering practice.
引文
[1]陈定海,穆志韬,田速栋,等.腐蚀坑应力集中系数影响分析[J].新技术新工艺,2012(7):97—99.CHEN Ding-hai,MU Zhi-tao,TIAN Su-dong,et al.Analysis for the Effects of Stress Concentration Factor of Corrosion Pits[J].New Technology New Process,2012(7):97—99.
[2]陈定海,穆志韬,朱做涛,等.腐蚀坑对疲劳裂纹扩展的影响分析[J].装备环境工程,2012,9(4):42—45.CHEN Ding-hai,MU Zhi-tao,ZHU Zuo-tao,et al.Analysis for the Effects of Fatigue Crack of Corrosion Pits[J].Equipment Environmental Engineering,2012,9(4):42—45.
[3]穆志韬,陈定海,朱做涛,等.腐蚀条件下LD2航空铝合金裂纹扩展规律研究[J].航空学报,2013,34(3):574—579.MU Zhi-tao,CHEN Ding-hai,ZHU Zuo-tao,et al.Fatigue Crack Growth Behavior of Aerosace Aluminum Alloy LD2 under Corrosion[J].Acta Aeronautica et Astronautica,2013,34(3):574—579.
[4]颜光耀,刘治国.加速腐蚀环境下LD2CS铝合金腐蚀损伤分析方法[J].装备环境工程,2014,11(6):110—115.YAN Guang-yao,LIU Zhi-guo.Research on Analysis Methods for Corrosion Damage of LD2CS Aluminum Alloy in Accelerated Corrosion Environment[J].Equipment Environmental Engineering,2014,11(6):110—115.
[5]孔光明,李旭东,穆志韬.基于局部腐蚀损伤的铝合金预腐蚀疲劳裂纹扩展模型[J].装备环境工程,2014,11(6):90—94.KONG Guang-ming,LI Xu-dong,MU Zhi-tao.Fatigue Crack Extension Model of Aluminium Alloy with Prior Corrosion Damage Based on Localised Corrosion Damage[J].Equipment Environmental Engineering,2014,11(6):90—94.
[6]李旭东,穆志韬,刘治国,等.基于分形理论的6A02铝合金腐蚀损伤评估[J].装备环境工程,2012,9(4):27—30.LI Xu-dong,MU Zhi-tao,LIU Zhi-guo,et al.Evaluation of Corrosion Damage for 6A02 Aluminum Alloy Based Fractal Theory[J].Equipment Environmental Engineering,2012,9(4):27—30.
[7]LI Xu-dong,WANG Xi-shu,REN Huai-hui,et al.Effectof Prior Corrosion State on the Fatigue Small Cracking Behaviour of 6151 T6 Aluminum Alloy[J].Corros Sci,2012,55(2):26—33.
[8]李旭东,朱武峰,穆志韬,等.LD2铝合金腐蚀行为研究[J].装备环境工程,2013,10(1):8—12.LI Xu-dong,ZHU Wu-feng,MU Zhi-tao.Corrosion Behavior Investigation of LD2 Aluminum Alloy[J].Equipment Environmental Engineering,2013,10(1):8—12.
[9]任克亮,吕国志,陈跃良.腐蚀结构损伤评估方法[J].机械强度,2007,19(6):992—996.REN Ke-liang,LYU Zhi-guo,CHEN Yue-liang.Damge Assessment Technigues for Corroded Structures[J].Journal of Mechanical Strength,2007,19(6):992—996.
[10]WALDE K,HILLDERRY B M.Characterization of Pitting Damage and Prediction of Remaining Fatigue Life[J].International Journal of Fatigue,2008,30(6):106—118.
[11]BRENCE J R,BROWN D E.Data Mining Corrosion from Eddy Current Mon-destructive Test[J].Computers&Industrial Engineering,2002,43(4):821—840.
[12]WANG Shou-yan,SONG Shi-zhe.Image Analysis of Atmospheric Corrosion Exposure of Zinc[J].Material Science and Engineering,2004,38:377—381.
[13]宋诗哲,王守琰,高志明,等.图像识别技术研究有色金属大气腐蚀早期行为[J].金属学报,2002,38(8):890—896.SONG Shi-zhe,WANG Shou-yan,GAO Zhi-ming,et al.Atmospheric Forepart Corrosion Behaviors of Nonferrous Metal Based on Image Recorgition[J].Acta Metallurgica Sinica,2002,38(8):890—896.
[14]穆志韬,苏维国,叶彬.铝合金加速腐蚀形貌灰度特征提取方法[J].海军航空工程学院学报,2012,27(2):132—135.MU Zhi-tao,SU Wei-guo,YE Bin.Gray Feature Extraction Method for Accelerated Corrosion Morphology of Aluminum Alloy[J].Journal of Aeronauical and Astronautical University,2012,27(2):132—135.
[15]朱做涛,穆志韬,苏维国,等.基于图像处理技术的铝合金腐蚀等级评定方法[J].南京航空航天大学学报,2010,42(3):383—386.ZHU Zuo-tao,MU Zhi-tao,SU Wei-guo,et al.Corrosion Grade Evaluation of Aluminum Alloy Based on Image Processing Technique[J].Journal of Nanjing University of Aeronautics&Astronautics,2010,42(3):383—386.
[2]陈定海,穆志韬,朱做涛,等.腐蚀坑对疲劳裂纹扩展的影响分析[J].装备环境工程,2012,9(4):42—45.CHEN Ding-hai,MU Zhi-tao,ZHU Zuo-tao,et al.Analysis for the Effects of Fatigue Crack of Corrosion Pits[J].Equipment Environmental Engineering,2012,9(4):42—45.
[3]穆志韬,陈定海,朱做涛,等.腐蚀条件下LD2航空铝合金裂纹扩展规律研究[J].航空学报,2013,34(3):574—579.MU Zhi-tao,CHEN Ding-hai,ZHU Zuo-tao,et al.Fatigue Crack Growth Behavior of Aerosace Aluminum Alloy LD2 under Corrosion[J].Acta Aeronautica et Astronautica,2013,34(3):574—579.
[4]颜光耀,刘治国.加速腐蚀环境下LD2CS铝合金腐蚀损伤分析方法[J].装备环境工程,2014,11(6):110—115.YAN Guang-yao,LIU Zhi-guo.Research on Analysis Methods for Corrosion Damage of LD2CS Aluminum Alloy in Accelerated Corrosion Environment[J].Equipment Environmental Engineering,2014,11(6):110—115.
[5]孔光明,李旭东,穆志韬.基于局部腐蚀损伤的铝合金预腐蚀疲劳裂纹扩展模型[J].装备环境工程,2014,11(6):90—94.KONG Guang-ming,LI Xu-dong,MU Zhi-tao.Fatigue Crack Extension Model of Aluminium Alloy with Prior Corrosion Damage Based on Localised Corrosion Damage[J].Equipment Environmental Engineering,2014,11(6):90—94.
[6]李旭东,穆志韬,刘治国,等.基于分形理论的6A02铝合金腐蚀损伤评估[J].装备环境工程,2012,9(4):27—30.LI Xu-dong,MU Zhi-tao,LIU Zhi-guo,et al.Evaluation of Corrosion Damage for 6A02 Aluminum Alloy Based Fractal Theory[J].Equipment Environmental Engineering,2012,9(4):27—30.
[7]LI Xu-dong,WANG Xi-shu,REN Huai-hui,et al.Effectof Prior Corrosion State on the Fatigue Small Cracking Behaviour of 6151 T6 Aluminum Alloy[J].Corros Sci,2012,55(2):26—33.
[8]李旭东,朱武峰,穆志韬,等.LD2铝合金腐蚀行为研究[J].装备环境工程,2013,10(1):8—12.LI Xu-dong,ZHU Wu-feng,MU Zhi-tao.Corrosion Behavior Investigation of LD2 Aluminum Alloy[J].Equipment Environmental Engineering,2013,10(1):8—12.
[9]任克亮,吕国志,陈跃良.腐蚀结构损伤评估方法[J].机械强度,2007,19(6):992—996.REN Ke-liang,LYU Zhi-guo,CHEN Yue-liang.Damge Assessment Technigues for Corroded Structures[J].Journal of Mechanical Strength,2007,19(6):992—996.
[10]WALDE K,HILLDERRY B M.Characterization of Pitting Damage and Prediction of Remaining Fatigue Life[J].International Journal of Fatigue,2008,30(6):106—118.
[11]BRENCE J R,BROWN D E.Data Mining Corrosion from Eddy Current Mon-destructive Test[J].Computers&Industrial Engineering,2002,43(4):821—840.
[12]WANG Shou-yan,SONG Shi-zhe.Image Analysis of Atmospheric Corrosion Exposure of Zinc[J].Material Science and Engineering,2004,38:377—381.
[13]宋诗哲,王守琰,高志明,等.图像识别技术研究有色金属大气腐蚀早期行为[J].金属学报,2002,38(8):890—896.SONG Shi-zhe,WANG Shou-yan,GAO Zhi-ming,et al.Atmospheric Forepart Corrosion Behaviors of Nonferrous Metal Based on Image Recorgition[J].Acta Metallurgica Sinica,2002,38(8):890—896.
[14]穆志韬,苏维国,叶彬.铝合金加速腐蚀形貌灰度特征提取方法[J].海军航空工程学院学报,2012,27(2):132—135.MU Zhi-tao,SU Wei-guo,YE Bin.Gray Feature Extraction Method for Accelerated Corrosion Morphology of Aluminum Alloy[J].Journal of Aeronauical and Astronautical University,2012,27(2):132—135.
[15]朱做涛,穆志韬,苏维国,等.基于图像处理技术的铝合金腐蚀等级评定方法[J].南京航空航天大学学报,2010,42(3):383—386.ZHU Zuo-tao,MU Zhi-tao,SU Wei-guo,et al.Corrosion Grade Evaluation of Aluminum Alloy Based on Image Processing Technique[J].Journal of Nanjing University of Aeronautics&Astronautics,2010,42(3):383—386.