{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/70141"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/70141","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"In Process Measurement of Hydrogen In Welding","abstract":"The deleterious effects of atomic, or diffusible, hydrogen dissolved in welds on their mechanical properties have been known for over four decades. However, post weld inspection and repair of hydrogen induced cracks in welds remains the only means of correcting the defects produced by excess hydrogen in the arc atmosphere during welding. In this study, a spectroscopic technique for measuring the amount of hydrogen in the arc atmosphere during welding is presented. A relationship between the amount of hydrogen present in the weld arc atmosphere during welding and the diffusible hydrogen content of the resulting weld is developed. The results of mechanical tests are used to determine the hydrogen induced cracking susceptibility of an armor steel. The amount of hydrogen present in the arc atmosphere during welding is correlated with the mechanical properties of the weld. Methods for applying this work to real time detection of conditions likely to produce hydrogen induced cracking of production welds, and thereby reduce the amount of nondestructive inspection and weld repair required later, are suggested.","abstract_html":"The deleterious effects of atomic, or diffusible, hydrogen dissolved in welds on their mechanical properties have been known for over four decades. However, post weld inspection and repair of hydrogen induced cracks in welds remains the only means of correcting the defects produced by excess hydrogen in the arc atmosphere during welding. In this study, a spectroscopic technique for measuring the amount of hydrogen in the arc atmosphere during welding is presented. A relationship between the amount of hydrogen present in the weld arc atmosphere during welding and the diffusible hydrogen content of the resulting weld is developed. The results of mechanical tests are used to determine the hydrogen induced cracking susceptibility of an armor steel. The amount of hydrogen present in the arc atmosphere during welding is correlated with the mechanical properties of the weld. Methods for applying this work to real time detection of conditions likely to produce hydrogen induced cracking of production welds, and thereby reduce the amount of nondestructive inspection and weld repair required later, are suggested.","abstract_has_math":false,"creators":["White, Dawn Roberta"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-15T21:41:28Z","date_published":"2014-12-15T21:41:28Z","updated_at":"2026-07-22T22:26:02Z","subjects":["Engineering, Mechanical"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8701653"],"render_values":[{"text":"(UMI)AAI8701653","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/70141","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["White, Dawn Roberta"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-15T21:41:28Z","10000-01-01","1986"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Mechanical"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/70141","(UMI)AAI8701653"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The deleterious effects of atomic, or diffusible, hydrogen dissolved in welds on their mechanical properties have been known for over four decades. However, post weld inspection and repair of hydrogen induced cracks in welds remains the only means of correcting the defects produced by excess hydrogen in the arc atmosphere during welding. In this study, a spectroscopic technique for measuring the amount of hydrogen in the arc atmosphere during welding is presented. A relationship between the amount of hydrogen present in the weld arc atmosphere during welding and the diffusible hydrogen content of the resulting weld is developed. The results of mechanical tests are used to determine the hydrogen induced cracking susceptibility of an armor steel. The amount of hydrogen present in the arc atmosphere during welding is correlated with the mechanical properties of the weld. Methods for applying this work to real time detection of conditions likely to produce hydrogen induced cracking of production welds, and thereby reduce the amount of nondestructive inspection and weld repair required later, are suggested.","Made available in DSpace on 2014-12-15T21:41:28Z (GMT). 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However, post weld inspection and repair of hydrogen induced cracks in welds remains the only means of correcting the defects produced by excess hydrogen in the arc atmosphere during welding. In this study, a spectroscopic technique for measuring the amount of hydrogen in the arc atmosphere during welding is presented. A relationship between the amount of hydrogen present in the weld arc atmosphere during welding and the diffusible hydrogen content of the resulting weld is developed. The results of mechanical tests are used to determine the hydrogen induced cracking susceptibility of an armor steel. The amount of hydrogen present in the arc atmosphere during welding is correlated with the mechanical properties of the weld. Methods for applying this work to real time detection of conditions likely to produce hydrogen induced cracking of production welds, and thereby reduce the amount of nondestructive inspection and weld repair required later, are suggested.","Made available in DSpace on 2014-12-15T21:41:28Z (GMT). No. of bitstreams: 1 8701653.pdf: 4881647 bytes, checksum: 80a8a0e15469db3439b5444043d12a06 (MD5) Previous issue date: 1986","Embargo set by: Seth Robbins for item 70307 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","172 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1986."],"dc:identifier":["http://hdl.handle.net/2142/70141","(UMI)AAI8701653"],"dc:subject":["Engineering, Mechanical"],"dc:title":["In Process Measurement of Hydrogen In Welding"],"dc:type":["text"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:02Z"}