{"id":"W2060095090","doi":"10.1119/1.3177062","title":"Construction and calibration of an impact hammer","year":2009,"lang":"en","type":"article","venue":"American Journal of Physics","topic":"Structural Health Monitoring Techniques","field":"Engineering","cited_by":8,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of British Columbia","funders":"","keywords":"Hammer; Physics; Admittance; Calibration; Acoustics; Noise (video); Inertance; Point (geometry); Piezoelectricity; Structural engineering; Electrical impedance; Computer science; Engineering; Geometry","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":[0.001533932,0.0005469618,0.0006177806,0.001328081,0.0008001198,0.0005166597,0.001361915,0.001242797,0.00518519],"category_scores_gemma":[0.002711867,0.0005486457,0.0003005026,0.000665532,0.0008405826,0.0007476617,0.002016093,0.001143087,0.001495533],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00067908,"about_ca_system_score_gemma":0.001335371,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001277987,"about_ca_topic_score_gemma":0.001731855,"domain_scores_codex":[0.998417,0.00008741654,0.00006066033,0.0002553099,0.001052596,0.0001269103],"domain_scores_gemma":[0.9983799,0.0002570489,0.0000699049,0.000418153,0.0006454713,0.0002295714],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.0004614028,0.0002339246,0.008072162,0.0003325067,0.00002157282,0.000643094,0.0003689748,0.01188046,0.8143392,0.005396657,0.002233893,0.1560162],"study_design_scores_gemma":[0.0002588267,0.005917107,0.0462113,0.0001681514,0.00009040719,0.003151,0.0004579306,0.1205904,0.7616195,0.00311152,0.05812433,0.0002995196],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"methods","genre_gemma":"empirical","genre_scores_codex":[0.2746784,0.0002567371,0.7056091,0.0003605956,0.0003938683,0.001715199,0.000713165,0.004413064,0.01185988],"genre_scores_gemma":[0.6489843,0.0002349451,0.339336,0.0001377616,0.00004726155,0.0007444009,0.0006370477,0.0001820824,0.009696252],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.00518519,"threshold_uncertainty_score":0.0173462,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01173389829092731,"score_gpt":0.301671966084793,"score_spread":0.2899380677938657,"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."}}