Molecular Metal Repair of a Diesel Generator Alternator Shaft. December 1992. MOLECULAR METAL REPAIR OF A DIESEL GENERATOR ALTERNATOR SHAFT LIEUTENANT COMMANDER T. M. DANNATT MSC, CENG, MIMEcHE, RN (MEO, HMS Corn wall) ABSTRACT HMS Cornwall recently suffered surface damage to a main generator alternator shaft in way of the support bearing. The ship was deployed at the time wi