id	keyword
fis-2276	crack
fis-2276	energy
fis-2276	tip
fis-2276	filtering
fis-2276	heat
fis-2276	temperature
fis-2276	doi
fis-2276	fatigue
fis-2276	noise
fis-2276	gaussian
fis-2276	function
fis-2276	wavelet
fis-2276	time
fis-2276	crack tip