In a filament winding technique, filaments are wound around {HEAD ~ a mandrel}, and the mandrel remains in the structure and becomes part, normally a structural part, of {TAIL ~ the article} 
In a filament winding technique , filaments are wound around { HEAD ~ a mandrel } , and the mandrel remains in the structure and becomes part , normally a structural part , of { TAIL ~ the article }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL