id stringclasses 6
values | aircraft_context stringclasses 1
value | flight_phase stringclasses 5
values | sensor_layout stringclasses 1
value | baseline_reference stringclasses 6
values | vibration_mode_summary stringclasses 6
values | coupling_features stringclasses 6
values | observed_distortion_summary stringclasses 6
values | distortion_pattern_type stringclasses 6
values | likely_fault_location stringclasses 5
values | fault_severity_estimate float64 0.05 0.26 | localization_confidence float64 0.35 0.86 | confounder_flags stringclasses 4
values | integrity_percent_of_baseline float64 0.89 0.97 | notes stringclasses 6
values | constraints stringclasses 1
value | gold_checklist stringclasses 1
value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
VML-001 | A320; fleet baseline; healthy ref | cruise | wing_root|wing_tip|fuselage_mid|tail | idx 0.92; env ±0.15Hz; coupling root-tip 0.92 | M1 7.4->7.2Hz; M2 stable; M3 stable | root-tip coupling 0.92->0.78; root-fuse 0.88->0.86 | localized coupling collapse near root; frequency shift at M1 | localized_coupling_collapse | wing_root rib_5 | 0.22 | 0.86 | none | 0.92 | Pattern Delta style: root-driven distortion | Under 280 words | type+loc+sev+conf+flags+integrity |
VML-002 | A320; fleet baseline; healthy ref | climb | wing_root|wing_tip|fuselage_mid|tail | idx 0.86; env ±0.25Hz | M1 broadens; M2 slight shift; M3 broadens | coupling variability high | distortion appears during turbulence window only | transient_broadband_widening | none | 0.05 | 0.4 | turbulence | 0.97 | Confounder dominated. Do not localize | Under 280 words | type+loc+sev+conf+flags+integrity |
VML-003 | A320; fleet baseline; healthy ref | approach | wing_root|wing_tip|fuselage_mid|tail | idx 0.87; flap baseline | M2 12.3->12.0Hz; M3 stable | tip-tail coupling 0.73->0.60; root-tip stable | distortion concentrated at tip-tail modes; flap phase controlled | tip_tail_decoupling | wing_tip outboard_skin_panel | 0.18 | 0.78 | flaps_modeled | 0.9 | Tip region distortion under load changes | Under 280 words | type+loc+sev+conf+flags+integrity |
VML-004 | A320; fleet baseline; healthy ref | takeoff | wing_root|wing_tip|fuselage_mid|tail | idx 0.80; takeoff envelope wider | engine harmonic overlaps M1/M2; amplitudes higher | coupling appears reduced across all links | global distortion matches propulsion harmonics, not structure | propulsion_harmonic_masking | none | 0.06 | 0.35 | engine_harmonics | 0.96 | Do not mislocalize. Mark confounder | Under 280 words | type+loc+sev+conf+flags+integrity |
VML-005 | A320; fleet baseline; healthy ref | cruise | wing_root|wing_tip|fuselage_mid|tail | idx 0.92; env ±0.15Hz | M3 18.6->18.1Hz; M1/M2 stable | root-fuse coupling 0.88->0.74; fuse-tail 0.70->0.66 | fuselage link weakening; higher mode shift suggests bond issue | mid_fuselage_coupling_shear | fuselage_mid frame_joint_12 | 0.26 | 0.72 | none | 0.89 | Mid fuselage distortion | Under 280 words | type+loc+sev+conf+flags+integrity |
VML-006 | A320; fleet baseline; healthy ref | descent | wing_root|wing_tip|fuselage_mid|tail | idx 0.91; env ±0.18Hz | M2 splits into 12.2 and 12.5Hz; M1 stable | coupling becomes asymmetric root-tip up vs down | mode_split_plus_asymmetry consistent with fastener looseness | mode_split_asymmetry | wing_root fastener_line_A | 0.2 | 0.8 | none | 0.91 | Asymmetric split points to loosened line | Under 280 words | type+loc+sev+conf+flags+integrity |
What this dataset tests
Whether a system can detect topological distortion in the vibration mode manifold and localize likely damage.
It must not confuse confounders with damage: turbulence engine harmonics icing payload shifts control surface modes.
Required outputs
- distortion_pattern_type
- likely_fault_location
- fault_severity_estimate
- localization_confidence
- confounder_flags
- integrity_percent_of_baseline
Scoring conventions
- severity ranges 0 to 1
- localization confidence ranges 0 to 1
- integrity is reported as percent of baseline
Use case
Layer two of Structural Health as a Vibration Mode Manifold.
Supports:
- localizable early crack detection
- separating environment from structural change
- inputs for integrity horizon and inspection scheduling
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