{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/117758"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/117758","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Nucleation of large avalanches","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms","abstract_has_math":false,"creators":["Long, Alan"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Dahmen, Karin A","Weissman, Micheal B","Gadway, Bryce","Faulkner, Thomas"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-12","date_published":"2022-12","updated_at":"2026-07-22T22:24:56Z","subjects":["Avalanches","Plasticity","Deformation","Nucleation","Bulk Metallic Glass","Shear Band"],"languages":["en","eng"],"rights":["Copyright 2022 Alan Long"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/117758","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Dahmen, Karin A","Weissman, Micheal B","Gadway, Bryce","Faulkner, Thomas"]},{"key":"dc:creator","label":"Author","values":["Long, Alan"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-12","2022-11-22"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"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":["Avalanches","Plasticity","Deformation","Nucleation","Bulk Metallic Glass","Shear Band"]}]},{"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 Alan Long"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/117758"]}]},{"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 2023-04-12 without embargo terms","The student, Alan Long, accepted the attached license on 2022-11-15 at 13:17.","The student, Alan Long, submitted this Dissertation for approval on 2022-11-15 at 13:25.","This Dissertation was approved for publication on 2022-11-22 at 13:04.","DSpace SAF Submission Ingestion Package generated from Vireo submission #18581 on 2023-04-12 at 07:27:10","Under slow forcing, many solids deform intermittently via slip avalanches. Examples include bulk metallic glasses (BMGs) [1 – 3], granular media [4 – 6] and high entropy alloys [7]. In each case, experiments show a wide range of avalanche sizes. Understanding the details of the mechanisms for these behaviors is critical to safely using these materials in applications and developing microstructural design principles to tailor mechanical properties. For applications, the large avalanches can be disastrous, as they typically cut through the entire sample. Despite its importance, the behavior of large avalanches has until now been largely unknown. Using a simple mean-field model [2,8], high resolution experiments, and computational simulations, we elucidate the properties of these large avalanches in both BMGs and granular media. We discuss the nucleation mechanism by which the large avalanches form. Both the model and experiments with BMGs show precursory “rumbling” before many of the large avalanches. This rumbling is the nucleation phase for a large event. We also discuss and analyze the brittleness and ductility of BMG composites with microscale crystalline precipitates and BMGs that do not contain crystallites. We determine the dependence of the large avalanche statistics on stress and the hardening of the material. Finally we compare the large avalanche statistics of BMGs and granular materials. Despite significant differences in the structure and stress-strain behavior, the statistics of the avalanches for both materials follow similar trends with respect to both their large and small events. We develop and use new methods to characterize the propagation dynamics in these materials."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Nucleation of large avalanches"]}]}],"canonical_facts":{"dc:contributor":["Dahmen, Karin A","Weissman, Micheal B","Gadway, Bryce","Faulkner, Thomas"],"dc:creator":["Long, Alan"],"dc:date":["2022-12","2022-11-22"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms","The student, Alan Long, accepted the attached license on 2022-11-15 at 13:17.","The student, Alan Long, submitted this Dissertation for approval on 2022-11-15 at 13:25.","This Dissertation was approved for publication on 2022-11-22 at 13:04.","DSpace SAF Submission Ingestion Package generated from Vireo submission #18581 on 2023-04-12 at 07:27:10","Under slow forcing, many solids deform intermittently via slip avalanches. Examples include bulk metallic glasses (BMGs) [1 – 3], granular media [4 – 6] and high entropy alloys [7]. In each case, experiments show a wide range of avalanche sizes. Understanding the details of the mechanisms for these behaviors is critical to safely using these materials in applications and developing microstructural design principles to tailor mechanical properties. For applications, the large avalanches can be disastrous, as they typically cut through the entire sample. Despite its importance, the behavior of large avalanches has until now been largely unknown. Using a simple mean-field model [2,8], high resolution experiments, and computational simulations, we elucidate the properties of these large avalanches in both BMGs and granular media. We discuss the nucleation mechanism by which the large avalanches form. Both the model and experiments with BMGs show precursory “rumbling” before many of the large avalanches. This rumbling is the nucleation phase for a large event. We also discuss and analyze the brittleness and ductility of BMG composites with microscale crystalline precipitates and BMGs that do not contain crystallites. We determine the dependence of the large avalanche statistics on stress and the hardening of the material. Finally we compare the large avalanche statistics of BMGs and granular materials. Despite significant differences in the structure and stress-strain behavior, the statistics of the avalanches for both materials follow similar trends with respect to both their large and small events. We develop and use new methods to characterize the propagation dynamics in these materials."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/117758"],"dc:language":["en","eng"],"dc:rights":["Copyright 2022 Alan Long"],"dc:subject":["Avalanches","Plasticity","Deformation","Nucleation","Bulk Metallic Glass","Shear Band"],"dc:title":["Nucleation of large avalanches"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:56Z"}