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 __   _     ______              _____     ______  
| || | ||  /_   _//   ____     |  ___||  /_   _// 
| '--' ||   -| ||-   |    \\   | ||__      | ||   
| .--. ||   _| ||_   | [] ||   | ||__     _| ||   
|_|| |_||  /_____//  |  __//   |_____||  /__//    
`-`  `-`   `-----`   |_|`-`    `-----`   `--`     
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Text this: Development of crack propagation monitoring by vibration measurementpart one: at the end of the plate.