{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/116240"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/116240","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Damage evaluation in dolomitic limestone using nonlinear ultrasonic higher harmonic generation","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms","abstract_has_math":false,"creators":["Wang, Ruolei"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Systems & Entrepreneurial Engr","degree_department":null,"school":null,"contributors":["Reis, Henrique M."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-08","date_published":"2022-08","updated_at":"2026-07-22T22:24:55Z","subjects":["Nondestructive Testing","ultrasound","limestone"],"languages":["en","eng"],"rights":["Copyright 2022 Ruolei Wang"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/116240","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Reis, Henrique M."]},{"key":"dc:creator","label":"Author","values":["Wang, Ruolei"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-08","2022-07-19"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Systems & Entrepreneurial Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"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":["Nondestructive Testing","ultrasound","limestone"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2022 Ruolei Wang"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/116240"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms","The student, Ruolei Wang, accepted the attached license on 2022-07-14 at 09:55.","The student, Ruolei Wang, submitted this Thesis for approval on 2022-07-14 at 10:02.","This Thesis was approved for publication on 2022-07-19 at 09:14.","DSpace SAF Submission Ingestion Package generated from Vireo submission #18301 on 2022-11-15 at 18:21:03","Dolomitic limestone specimens were increasingly damaged by heat treating them to 100 °C, 200 °C, 300 °C, 400 °C, 500 °C, 600 °C and 700 °C. Along with an undamaged specimen, all specimens were nondestructively tested using nonlinear higher harmonic generation method. The flexural strengths of the specimen were also obtained through four-point bending tests to validate the strength reduction caused by accumulation of microcracks through high temperature treatment. Results from higher harmonic generation method correlated relatively well with the corresponding strength reduction in each specimen (R^2= 0.91 for 3rd order amplitude ratio and R^2=0.84 for 5th order amplitude ratio), which matches with some of the finding conducted by previous studies. However, the results were also greatly influenced by the frequency of the sending waves. The application of this method should be introduced with other well-established methods such as noncollinear wave mixing to increase its reliability."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Damage evaluation in dolomitic limestone using nonlinear ultrasonic higher harmonic generation"]}]}],"canonical_facts":{"dc:contributor":["Reis, Henrique M."],"dc:creator":["Wang, Ruolei"],"dc:date":["2022-08","2022-07-19"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms","The student, Ruolei Wang, accepted the attached license on 2022-07-14 at 09:55.","The student, Ruolei Wang, submitted this Thesis for approval on 2022-07-14 at 10:02.","This Thesis was approved for publication on 2022-07-19 at 09:14.","DSpace SAF Submission Ingestion Package generated from Vireo submission #18301 on 2022-11-15 at 18:21:03","Dolomitic limestone specimens were increasingly damaged by heat treating them to 100 °C, 200 °C, 300 °C, 400 °C, 500 °C, 600 °C and 700 °C. Along with an undamaged specimen, all specimens were nondestructively tested using nonlinear higher harmonic generation method. The flexural strengths of the specimen were also obtained through four-point bending tests to validate the strength reduction caused by accumulation of microcracks through high temperature treatment. Results from higher harmonic generation method correlated relatively well with the corresponding strength reduction in each specimen (R^2= 0.91 for 3rd order amplitude ratio and R^2=0.84 for 5th order amplitude ratio), which matches with some of the finding conducted by previous studies. However, the results were also greatly influenced by the frequency of the sending waves. The application of this method should be introduced with other well-established methods such as noncollinear wave mixing to increase its reliability."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/116240"],"dc:language":["en","eng"],"dc:rights":["Copyright 2022 Ruolei Wang"],"dc:subject":["Nondestructive Testing","ultrasound","limestone"],"dc:title":["Damage evaluation in dolomitic limestone using nonlinear ultrasonic higher harmonic generation"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Systems & Entrepreneurial Engr"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:55Z"}