id	keyword
fis-2421	defect
fis-2421	corrosion
fis-2421	corrosion defect
fis-2421	damage
fis-2421	pipe
fis-2421	method
fis-2421	depth
fis-2421	doi
fis-2421	pressure
fis-2421	strutturale
fis-2421	figure
fis-2421	frattura
fis-2421	integrità