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Experimental Investigation of Narrow Gap Improved Electroslag Welding for HPS 70W High-Performance Steel

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dc.contributor.advisor Urgessa, Girum Denes, Andrei
dc.creator Denes, Andrei 2017-04-28 2017-12-21T20:25:30Z 2018-04-28T06:33:42Z
dc.identifier doi:10.13021/G8HX2B
dc.description This thesis has been embargoed for 1 year. It will not be available until April 2018 at the earliest. en_US
dc.description.abstract This thesis presents an experimental investigation of the Narrow Gap Improved Electroslag (ESW-NG) welding method when applied on HPS 70W high-performance steel and the associated tests required for qualification of the welding method under the American Welding Society D1.5:2010 (AWS) bridge welding code. The welding process is studied in detail through testing of two weld qualification plates and the base metal. Tension testing, toughness testing and hardness testing of specimens with various geometries and orientations within the two plates and the base metal were performed, in addition to the tests required for weld qualification. The testing methods and specimens used are thoroughly described and their significance is explained. The experimental results achieved the objective of determining and characterizing the mechanical properties of HPS 70W high-performance steel when welded with ESW-NG. However, the research revealed that ESW-NG cannot be pre-qualified for HPS 70W per the AWS code at this time due to the failure of the all-weld tension specimens.
dc.language.iso en en_US
dc.subject ESW-NG en_US
dc.subject electroslag en_US
dc.subject weld en_US
dc.subject steel en_US
dc.subject HPS en_US
dc.subject bridge en_US
dc.title Experimental Investigation of Narrow Gap Improved Electroslag Welding for HPS 70W High-Performance Steel en_US
dc.type Thesis en_US Master of Science in Civil and Infrastructure Engineering en_US Master's en_US Civil and Infrastructure Engineering en_US George Mason University en_US

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