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 ______     _____    _    _      ___              
|      \\  |  ___|| | || | ||   / _ \\    ____    
|  --  //  | ||__   | || | ||  / //\ \\  |    \\  
|  --  \\  | ||__   | \\_/ || |  ___  || | [] ||  
|______//  |_____||  \____//  |_||  |_|| |  __//  
`------`   `-----`    `---`   `-`   `-`  |_|`-`   
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Text this: Damage detection in compressed natural gas (CNG) cylinders based on auxiliary mass induced frequency shift