Fiscal Year	2011
Division	Graduate School of Engineering & Applied Science
Department	Mechanical & Aerospace Engineering
Investigator(s)	Menon, Sarath K. McNelley, Terry R.
Sponsor	Office of Naval Research (Navy)
Summary	This proposal is for funding to determine the feasibility of performing crack repair on submarine control surfaces by underwater FSW of HY-80 steel. FSW will be conducted on 6.3mm (0.25in) thick HY-80 steel sheet in a dry condition as well as underwater in a laboratory environment using facilities that have been successfully used to conduct FSW of selected plain carbon and low alloy steels. Microstructures and microstructure-mechanical property relationships will be established for the HY-80 material after FSW.
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Data	Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal