{"id":"W2974889393","doi":"10.3390/app9183874","title":"Nonlinear Vibration Analysis of a Beam with a Breathing Crack","year":2019,"lang":"en","type":"article","venue":"Applied Sciences","topic":"Structural Health Monitoring Techniques","field":"Engineering","cited_by":34,"is_retracted":false,"has_abstract":true,"ca_institutions":"Lakehead University","funders":"National Natural Science Foundation of China","keywords":"Nonlinear system; Beam (structure); Structural engineering; Vibration; Stiffness; Materials science; Finite element method; Bending stiffness; Mechanics; Acoustics; Physics; Engineering","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001551977,0.00006587311,0.0001465321,0.0002018435,0.00004372643,0.00002075853,0.000149074,0.00003015377,0.00001862577],"category_scores_gemma":[0.000002552219,0.00004928067,0.00002072672,0.00115465,0.00005823348,0.00010437,0.00001339793,0.00005521641,0.000004842832],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00002135293,"about_ca_system_score_gemma":0.00001689878,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00004494882,"about_ca_topic_score_gemma":0.000009928309,"domain_scores_codex":[0.999401,0.000003098056,0.0001266679,0.0001331461,0.0002058272,0.0001302068],"domain_scores_gemma":[0.9997433,0.00004598283,0.00003788775,0.0001295685,0.00001768239,0.00002552599],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"simulation_or_modeling","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.00005867365,0.00004366732,0.1190348,0.000504737,0.0005915801,0.000002767677,0.005988889,0.5491539,0.2715897,0.009211299,0.0001189368,0.04370115],"study_design_scores_gemma":[0.0002956623,0.0003261485,0.1789244,0.0000898577,0.000263938,0.000004630917,0.0007310439,0.4163282,0.4014426,0.0008565332,0.0002214012,0.0005156458],"study_design_candidate":"simulation_or_modeling","study_design_consensus":"simulation_or_modeling","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.995204,0.00001702808,0.001345376,0.00001220038,0.00005509809,0.0001290165,0.000001977266,0.0001914023,0.003043881],"genre_scores_gemma":[0.9623937,0.000004028049,0.03754457,0.00001456152,0.00002170838,0.000008505916,0.000002018664,0.000005013414,0.000005881083],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.1328257,"threshold_uncertainty_score":0.2009608,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0123040558759734,"score_gpt":0.2646828025592702,"score_spread":0.2523787466832968,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}