{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/122168"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/122168","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Surface morphology of hydrogels and silicones correlates with conditions of controlled fracture","abstract":"Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01","abstract_html":"Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01","abstract_has_math":false,"creators":["Ali, Nabila"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Dunn, Alison C."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023-12","date_published":"2023-12","updated_at":"2026-07-22T22:25:00Z","subjects":["Surface Topography","Fractured Surface","Elastomers","Entangled Hydrogels."],"languages":["en","eng"],"rights":["Copyright 2023 Nabila Ali"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/122168","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Dunn, Alison C."]},{"key":"dc:creator","label":"Author","values":["Ali, Nabila"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2023-12","2023-12-06"]},{"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":["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":["Surface Topography","Fractured Surface","Elastomers","Entangled Hydrogels."]}]},{"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 2023 Nabila Ali"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/122168"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01","The student, Nabila Ali, accepted the attached license on 2023-12-01 at 13:31.","The student, Nabila Ali, submitted this Thesis for approval on 2023-12-01 at 13:42.","This Thesis was approved for publication on 2023-12-06 at 08:53.","DSpace SAF Submission Ingestion Package generated from Vireo submission #20112 on 2024-03-01 at 13:32:29","Fracturing soft and hydrated materials is a complex task because of the varying energy dissipation within their unique soft networks. The Hutchens group has recently conducted research that involves controlled fracture to break down the energy required to create a new surface into tearing and cutting components based on experimental geometry. This approach allows them to separate the effects of material composition and blade geometry from the pre-stress near the fracture area. As an initial step, we put forth a hypothesis that the surface features resulting from planar cuts on soft materials can represent the energy dynamics of the fracture process. To put this hypothesis to the test, we employed a custom y-shaped cutting device to systematically alter the failure conditions while cutting highly entangled polylacrylamide hydrogel and oil-diluted silicone. We then analyzed the surface features on the cut surfaces, focusing on their morphological characteristics such as height, wedge angles concerning the cutting direction, and periodicity. Our findings indicate that samples with a more substantial tearing contribution to the fracture force exhibit more pronounced surface features, including increased periodicity and greater peak-to-valley distance, on average. This research is expected to provide insights into applications involving the insertion of needles into soft materials, where the process of fracturing at the needle tip and the friction along the needle shaft are intricately linked, particularly through the presence of damaged surface features."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Surface morphology of hydrogels and silicones correlates with conditions of controlled fracture"]}]}],"canonical_facts":{"dc:contributor":["Dunn, Alison C."],"dc:creator":["Ali, Nabila"],"dc:date":["2023-12","2023-12-06"],"dc:description":["Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01","The student, Nabila Ali, accepted the attached license on 2023-12-01 at 13:31.","The student, Nabila Ali, submitted this Thesis for approval on 2023-12-01 at 13:42.","This Thesis was approved for publication on 2023-12-06 at 08:53.","DSpace SAF Submission Ingestion Package generated from Vireo submission #20112 on 2024-03-01 at 13:32:29","Fracturing soft and hydrated materials is a complex task because of the varying energy dissipation within their unique soft networks. The Hutchens group has recently conducted research that involves controlled fracture to break down the energy required to create a new surface into tearing and cutting components based on experimental geometry. This approach allows them to separate the effects of material composition and blade geometry from the pre-stress near the fracture area. As an initial step, we put forth a hypothesis that the surface features resulting from planar cuts on soft materials can represent the energy dynamics of the fracture process. To put this hypothesis to the test, we employed a custom y-shaped cutting device to systematically alter the failure conditions while cutting highly entangled polylacrylamide hydrogel and oil-diluted silicone. We then analyzed the surface features on the cut surfaces, focusing on their morphological characteristics such as height, wedge angles concerning the cutting direction, and periodicity. Our findings indicate that samples with a more substantial tearing contribution to the fracture force exhibit more pronounced surface features, including increased periodicity and greater peak-to-valley distance, on average. This research is expected to provide insights into applications involving the insertion of needles into soft materials, where the process of fracturing at the needle tip and the friction along the needle shaft are intricately linked, particularly through the presence of damaged surface features."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/122168"],"dc:language":["en","eng"],"dc:rights":["Copyright 2023 Nabila Ali"],"dc:subject":["Surface Topography","Fractured Surface","Elastomers","Entangled Hydrogels."],"dc:title":["Surface morphology of hydrogels and silicones correlates with conditions of controlled fracture"],"dc:type":["text"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:00Z"}