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  _____      ___      _____     _____   __    __  
 |__  //    / _ \\   |__  //   |  ___|| \ \\ / // 
   / //    / //\ \\    / //    | ||__    \ \/ //  
  / //__  |  ___  ||  / //__   | ||__     \  //   
 /_____|| |_||  |_|| /_____||  |_____||    \//    
 `-----`  `-`   `-`  `-----`   `-----`      `

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Text this: wave scattering of interior vertical crack in plates and the detection of the crack