{"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":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001665495,0.000213689,0.0001521437,0.0001899529,0.0001128189,0.00009767879,0.0001791912,0.0003375397,0.0007845994],"category_scores_gemma":[0.0001857126,0.00008702394,0.0002136914,0.00009040634,0.0002129862,0.0001893507,0.0001771833,0.0001497567,0.00009204172],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001111333,"about_ca_system_score_gemma":0.0001340189,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001672303,"about_ca_topic_score_gemma":0.001016578,"domain_scores_codex":[0.9999473,0.00001053159,0.000002236092,0.00001285785,0.0000203592,0.000006678827],"domain_scores_gemma":[0.9999045,0.00004466819,0.00001396358,0.000009451825,0.00002258516,0.000004924617],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.0002268022,0.00007416093,0.01122246,0.0001972163,0.00005461951,0.0004783125,0.0005197412,0.2249006,0.712396,0.004600063,0.000382375,0.04494758],"study_design_scores_gemma":[0.000005784788,0.00008957626,0.00556577,0.000005876087,0.000007164164,0.00004626699,0.00005826271,0.9837524,0.009877373,0.000355728,0.0002278036,0.000007992751],"study_design_candidate":"simulation_or_modeling","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.8555253,0.0002540122,0.1417309,0.00008699064,0.00001203212,0.00002439719,0.00005432052,0.0000683329,0.002243587],"genre_scores_gemma":[0.9910568,0.0001030992,0.007651306,0.00001131278,0.000002953361,0.00001567474,0.00002388975,0.000005018406,0.001129942],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.001672303,"threshold_uncertainty_score":0.003325164,"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."}}