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

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Text this: Effects of porosity on free vibration and nonlinear dynamic response of multi-layered functionally graded materials subjected to blast loads