315 An Experiment Study on Real-time Crack Detection Method
315 き裂同定のリアルタイム処理法に関する研究(OS4-(2) 材料強度と構造設計,オーガナイズドセッション)

Tadashi HORIBE, Kuniaki TAKAHASHI, Yusuke AINOYA
2009 The Proceedings of Ibaraki District Conference  
An experimental crack detection system is developed based on the natural frequency changes . In the detecting system , we employed a Maharanobis discri 皿 inant analysis , which is a usefU1 way of determining s 血 ilah 耀 of an un 】 mown sample set tO a known one . MonitOring the Mahalanobis distance of unknown specimen and compa 血 g the distance of the 8pecimen with that ef un ・ cra磁 ed specimens , we can detect a crack position and a crack depth simultaneou81y と Usi皿 g both the statis 廿cal
more » ... 五ca 廿on method and Excel macro program , we have accomphshed the rea 卜t洫 e detect 血 g system . Key Word8 :Crack DetecUon , Mahalanobis Distance , Natural Frequencies, FFT , llinke Element Method
doi:10.1299/jsmeibaraki.2009.95 fatcat:24nqsxsqzbhyfh4lgqnaip4nly