id	keyword
brj-24974	joining
brj-24974	joint
brj-24974	strength
brj-24974	ultrasonic
brj-24974	process
brj-24974	fiber
brj-24974	paper
brj-24974	energy
brj-24974	material
brj-24974	influence
brj-24974	samples
brj-24974	fig