Friction generated between {HEAD ~ an outer surface} of {TAIL ~ the plate} and undersides of the adjacent shrouds reduces undesirable vibrations in the airfoils  
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Friction generated between { HEAD ~ an outer surface } of { TAIL ~ the plate } and undersides of the adjacent shrouds reduces undesirable vibrations in the airfoils
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH