{"schema_version":1,"research_id":"eoa_inverse_innovation_exp05_external_evaluation_20260803","source_assessment_id":"invariant_mode_decomposition_design__art_aesthetics:P2:v0","cell_id":"invariant_mode_decomposition_design__art_aesthetics","search_queries":["kinetic art conservation movement artist intent maintenance museum official","kinetic sculpture conservation vibration modal analysis condition monitoring","experimental modal analysis standard ISO modal testing structures","museum kinetic art conservation case study motorized sculpture","site:canada.ca heritage conservation kinetic art guidelines movement artist intent","site:culturalheritage.org code ethics conservation artist intent objects conservator reversible treatment","experimental modal analysis vibration testing validation mode shapes damping primary research optical camera structural dynamics","modal testing equipment rental price accelerometer impact hammer data acquisition 2026","\"modal analysis\" \"kinetic sculpture\" conservation","\"vibration analysis\" \"kinetic art\" conservation","\"mode shape\" sculpture conservation vibration","suspended sculpture vibration modal analysis artwork","\"Vibration Damping in Underactuated Cable-suspended Artwork\"","\"Flying Belt\" motion control suspended artwork vibration damping","site:arxiv.org/abs/2509.03238","site:culturalheritage.org/about-conservation/code-of-ethics American Institute Conservation Code Ethics Guidelines Practice","American Institute Conservation Code Ethics Guidelines for Practice official PDF"],"sources":[{"source_id":"S1","title":"Keep It Moving? Conserving Kinetic Art","publisher":"Getty Conservation Institute","url":"https://www.getty.edu/conservation/publications_resources/pdf_publications/keep_it_moving.html","source_class":"OFFICIAL_GUIDANCE","publication_date":"2017","accessed_at":"2026-08-03","claims_supported":["Movement can be constitutive of kinetic art rather than an incidental feature.","Kinetic-art conservation presents recurring questions about functionality, materiality, artist involvement, longevity, identity, obsolescence, and technical competence.","Maintenance, replication, and retirement are recognized preservation strategies."]},{"source_id":"S2","title":"Cybernetic Umbrella: A Case Study in Collaboration","publisher":"Getty Conservation Institute / Tate","url":"https://www.getty.edu/publications/keepitmoving/case-studies/5-lawson/","source_class":"PRIMARY_RESEARCH","publication_date":"2018","accessed_at":"2026-08-03","claims_supported":["Tate reports approximately sixty kinetic sculptures with work-specific display and conservation requirements.","A harmonically vibrating kinetic sculpture suffered mechanical faults and a broken rod that prevented display.","Tate and the artist's foundation explicitly sought longevity and functionality while preserving artist intent.","Conservators, technicians, engineers, manufacturers, curators, and an artist foundation participated in treatment decisions."]},{"source_id":"S3","title":"An Exploration into the Conservation of Chris Burden's Metropolis II","publisher":"American Institute for Conservation, Objects Specialty Group Postprints","url":"https://resources.culturalheritage.org/osg-postprints/v26/walker/","source_class":"PRIMARY_RESEARCH","publication_date":"2019","accessed_at":"2026-08-03","claims_supported":["LACMA identifies an operational preservation need for a complex kinetic sculpture that arrived without historical data or maintenance protocols.","The work requires continuing testing, performance-record analysis, repairs, and preventive maintenance.","The reported burden—1,560 maintenance hours per year plus additional track-replacement work—shows that kinetic-art operational problems can consume material institutional resources."]},{"source_id":"S4","title":"Vibration Damping in Underactuated Cable-suspended Artwork—Flying Belt Motion Control","publisher":"IEEE Robotics & Automation Magazine / arXiv","url":"https://arxiv.org/abs/2509.03238","source_class":"PRIMARY_RESEARCH","publication_date":"2025-09-03","accessed_at":"2026-08-03","claims_supported":["A cable-suspended interactive artwork exhibited unwanted torsional and pendulum-like oscillations that reduced responsiveness and constrained operation.","Researchers modeled two dominant oscillatory modes, experimentally obtained relevant resonant properties, and implemented robust input shaping.","Simulation and physical experiments reported improved vibration suppression and performance.","This is close prior art for mode-based diagnosis and control of suspended kinetic artwork."]},{"source_id":"S5","title":"Performance of Optical Structural Vibration Monitoring Systems in Experimental Modal Analysis","publisher":"Sensors / University of Leeds White Rose Research Online","url":"https://eprints.whiterose.ac.uk/id/eprint/174555/","source_class":"PRIMARY_RESEARCH","publication_date":"2021","accessed_at":"2026-08-03","claims_supported":["Optical systems can support experimental identification of modal properties using input-output measurements.","A comparative laboratory study evaluated five optical systems against precision accelerometers.","Different optical systems did not always produce equivalent modal parameters and each had design-specific limitations."]},{"source_id":"S6","title":"Modal Testing: A Practical Guide","publisher":"Siemens Digital Industries Software","url":"https://community.sw.siemens.com/articles/en_US/Knowledge/Modal-Testing-A-Guide","source_class":"OFFICIAL_PRODUCT_DOCUMENTATION","publication_date":"n.d.","accessed_at":"2026-08-03","claims_supported":["Experimental modal testing identifies natural frequencies, damping, and mode shapes from applied inputs and measured responses.","Installed boundary conditions, excitation placement and level, sensor geometry, coherence, curve fitting, and validation materially affect results.","Linearity checks, Modal Assurance Criterion, and comparison of measured and synthesized frequency-response functions are established validation practices.","Measurement points on both a component and its surrounding structure are needed to avoid misidentifying a larger structural mode as a component mode."]},{"source_id":"S7","title":"Challenging an Experimental Nonlinear Modal Analysis Method with a New Strongly Friction-Damped Structure","publisher":"Journal of Sound and Vibration / arXiv","url":"https://arxiv.org/abs/2011.08527","source_class":"PRIMARY_RESEARCH","publication_date":"2020-11-17","accessed_at":"2026-08-03","claims_supported":["Dry friction can produce amplitude-dependent frequency, damping, mode-shape changes, and higher harmonics that violate a simple linear modal interpretation.","Nonlinear modal properties can sometimes still be measured, but require a method and experimental design appropriate to the nonlinearity.","The study supports treating joint friction and amplitude dependence as explicit falsifiers or scope limits."]},{"source_id":"S8","title":"Code of Ethics and Guidelines for Practice","publisher":"American Institute for Conservation","url":"https://www.culturalheritage.org/conservation-at-work/uphold-professional-standards/code","source_class":"STANDARD","publication_date":"1994-08","accessed_at":"2026-08-03","claims_supported":["Conservation work requires informed respect for an object's significance and creator, competence, adverse-effect mitigation, documentation, preventive care, and safety.","Treatment requires consent from the owner, custodian, or authorized agent and communication supporting shared decisions and realistic expectations.","Conservators should consider artist-rights and occupational-safety laws and consult specialists when needed.","The guidance supports a conservator-led, documented, reversible, multi-authority pilot but does not itself authorize testing of any particular sculpture."]}],"problem_evidence":{"support":"STRONG","rationale":"The general problem and its consequences are visible in museum practice, while S4 documents the proposal's most specific mechanism: unwanted torsional and pendulum-like oscillations in a cable-suspended artwork constrained performance until mode-informed control was introduced. Tate reports mechanical failure in a harmonically vibrating sculpture, and LACMA reports substantial continuing maintenance and data-analysis requirements. Evidence does not establish prevalence across suspended sculptures or show that component-wise repairs commonly transfer energy between modes.","source_ids":["S1","S2","S3","S4"]},"stakeholder_evidence":{"support":"STRONG","rationale":"Tate and LACMA are identifiable institutional adopters with expressed needs to preserve operability, reliability, longevity, and intended experience in kinetic works. Tate's case identifies the artist's foundation, conservators, technicians, engineers, manufacturers, and curators as participating authorities. AIC guidance identifies the owner, custodian, or authorized agent as the consent authority. No institution was found explicitly requesting this exact residual-qualified modal-conservation protocol or committing a sculpture, funding, staff, or data to a pilot.","source_ids":["S2","S3","S8"]},"prior_art":{"proximity":"SUBSTANTIAL_COLLISION","closest_analogues":[{"name":"Flying Belt motion-control refurbishment for Standards and Double Standards","similarity":"Very close domain and mechanism match: a cable-suspended kinetic artwork had undesirable torsional and pendulum modes; investigators built a dynamic model, estimated resonant properties, designed a robust dual-mode input shaper, and validated vibration suppression experimentally.","remaining_difference":"The reported intervention uses a first-principles model and commissioning-oriented input shaping. The candidate's remaining bundle is work-specific conservation governance: operator-free empirical mode-shape identification, artist-declared protected modes, prohibited modes, held-out reconstruction residuals, coupling and drift checks, and advancement only of reversible controls under joint artistic, conservation, and engineering authority.","source_ids":["S4"]},{"name":"Tate conservation of Tsai's Umbrella","similarity":"A museum conserved an artwork whose intended behavior is harmonic vibration, confronted mechanical failures, evaluated functionality versus material authenticity, and collaborated with an artist foundation and technical specialists.","remaining_difference":"The case documents work-specific treatment and authority practice but does not report experimental modal decomposition, held-out prediction, modal sensitivity ranking, or residual-qualified reduced-order control.","source_ids":["S2"]},{"name":"Established experimental modal-analysis workflow","similarity":"The proposed acquisition of frequencies, damping, and mode shapes; attention to installed boundary conditions; multi-point sensing; linearity testing; coherence checks; and mode-shape validation are established engineering practice.","remaining_difference":"Generic modal practice does not decide which modes are artistically protected, impose conservation-specific reversibility and consent, or compare mode-aware controls against symptom-led conservation within an artwork-specific interpretation contract.","source_ids":["S5","S6","S7"]},{"name":"AIC conservation governance and preventive-care practice","similarity":"The candidate's consent, documentation, competence, specialist consultation, adverse-effect mitigation, safety, and continuing-care controls substantially implement existing professional guidance.","remaining_difference":"AIC guidance does not prescribe modal diagnosis, reduced-order modeling, or mode-specific intervention selection for kinetic sculpture.","source_ids":["S8"]}],"distinctive_claim_remaining":"Within one preregistered low-amplitude operating window, a residual-qualified empirical modal model will predict a reversible control that reduces a declared prohibited motion or clearance-risk metric more accurately than a component-independent response model and symptom-led tuning, while keeping artist-protected trajectory and acoustic deviations below declared tolerances. Failure of repeated mode identity, held-out reconstruction, comparative prediction, physical effect, protected-mode tolerance, or residual-growth criteria falsifies the claim.","confidence":"HIGH"},"implementation_evidence":{"support":"MODERATE","rationale":"Experimental modal testing, optical tracking, multi-sensor validation, linearity checks, mode-shape comparison, residual synthesis, and mode-based control are technically credible. Optical-system disagreement, sensor mass or attachment effects, installed boundary conditions, closely spaced modes, friction, slack, contact, and amplitude-dependent nonlinearities are material limitations. AIC guidance supplies a credible consent and documentation workflow, and the candidate's low-amplitude, reversible, stop-and-rollback design is directionally safe. No evidence establishes safety, sensor compatibility, measurement signal-to-noise, stable modal behavior, data availability, artist-approved tolerances, or authority consent for any actual target sculpture.","source_ids":["S4","S5","S6","S7","S8"]},"scores":{"meaningful_impact":{"score":4,"rationale":"For an affected work, avoiding damage while retaining intended movement could preserve both material integrity and the artwork's constitutive behavior. Museum cases show that failure and maintenance burdens matter, but population prevalence and realized effect size are unmeasured.","source_ids":["S1","S2","S3"]},"stakeholder_pull":{"score":3,"rationale":"Museums and artist foundations express strong pull for reliable, artist-consistent kinetic-art conservation, but no adopter has requested or committed to this exact protocol.","source_ids":["S2","S3","S8"]},"incremental_advantage":{"score":2,"rationale":"Mode-aware prediction may expose coupled behavior missed by component inspection, but no comparative evidence shows better conservation decisions, lower risk, or lower cost than symptom-led tuning, empirically validated finite-element work, or withdrawal. S4 already demonstrates closely related mode-informed artwork control.","source_ids":["S4","S6"]},"distinctiveness_plausibility":{"score":2,"rationale":"The technical core substantially overlaps established modal testing and a directly relevant suspended-artwork control study. The protected-mode and residual-governance bundle remains distinguishable but has not been shown to constitute a distinct practice or outcome.","source_ids":["S2","S4","S6","S8"]},"technical_implementability":{"score":4,"rationale":"All principal technical components have credible analogues, including optical motion measurement and physical validation. Implementability falls short of the maximum because fragile attachments, low signal levels, near-degenerate modes, friction, impacts, slack, and nonlinearity can defeat the proposed local model.","source_ids":["S4","S5","S6","S7"]},"adoption_authority_feasibility":{"score":4,"rationale":"Museum conservators, collection custodians, artist foundations, engineers, and technicians are recognizable decision participants, and professional guidance defines consent and consultation requirements. Feasibility remains work-specific and requires actual written authority and artist-protected criteria.","source_ids":["S2","S3","S8"]},"evidence_readiness":{"score":3,"rationale":"The proposal supplies a bounded protocol, comparators, held-out tests, and falsifiers, and the necessary methods exist. It lacks a named target work, partner commitment, baseline data, preregistered numerical thresholds, equipment plan, and cost quotations.","source_ids":["S4","S5","S6","S8"]},"safety_net_benefit":{"score":4,"rationale":"Remote sensing, low-amplitude tests, reversible presets or fixtures, stop rules, archived-controller rollback, and continued availability of withdrawal provide a strong safety net. They do not establish structural safety or eliminate handling and fatigue exposure.","source_ids":["S2","S6","S8"]},"scalability":{"score":2,"rationale":"The workflow can reuse standard analysis methods, but Tate reports that kinetic works require individual treatment, and instrumentation, artist consultation, mode interpretation, and operating limits must be re-established for each configuration.","source_ids":["S2","S5","S6"]}},"score_confidence":"MODERATE","costs":{"first_evidence":{"band_2026_usd":"50K_TO_250K","scope":"One nonpublic, one-configuration study covering conservation and engineering planning, optical and reversible sensor setup, low-amplitude excitation, baseline and held-out data collection, modal and comparator models, one reversible preset or fixture test, and a joint report.","confidence":"LOW","assumptions":["A four-to-eight-week calendar effort with part-time objects conservator, structural-dynamics engineer, technician, registrar or collection manager, and artist liaison.","Institution or consultant already has access to cameras, accelerometers, acquisition hardware, analysis software, rigging access, and insurance; specialized rental and access equipment remain bounded.","No structural repair, permanent treatment, public operation, or prolonged exhibition monitoring is included.","The sources establish workflow and labor intensity but provide no comparable project quotation, so this is a resource-equivalent planning band rather than a market price."],"source_ids":["S3","S5","S6","S8"]},"initial_deployment_startup":{"band_2026_usd":"50K_TO_250K","scope":"Convert a successful study into a work-specific operational package: validated controller preset or removable damping fixture, monitoring baselines, protected/prohibited-mode register, staff training, documentation, approvals, and rollback rehearsal.","confidence":"LOW","assumptions":["Applies to one existing sculpture and one venue configuration.","Controls remain software-only or removable; permanent fabrication, retensioning, major rigging modification, or structural certification is excluded.","Existing museum technical and conservation staff can absorb part of training and documentation effort."],"source_ids":["S2","S4","S6","S8"]},"operational_launch":{"band_2026_usd":"250K_TO_1M","scope":"Establish a museum-ready capability for several kinetic works, including reusable sensing and data-acquisition equipment, engineering and conservation procedures, staff competence, safe-access arrangements, record infrastructure, and initial work-specific commissioning.","confidence":"LOW","assumptions":["Covers a small institutional program rather than a single analysis.","Includes equipment acquisition or long-term access, outside engineering support, training, governance, and contingency for retesting.","Does not include major sculpture reconstruction, venue structural work, public liability upgrades, or replacement of obsolete artwork machinery."],"source_ids":["S2","S3","S5","S6","S8"]},"annual_recurring":{"band_2026_usd":"50K_TO_250K","scope":"Periodic work-specific modal checks, condition-triggered retesting, data review, preventive maintenance coordination, artist or foundation consultation, documentation, and one bounded recalibration or reversible-control update per year.","confidence":"LOW","assumptions":["Covers one to three moderately complex works, not a continuously maintained installation on the scale of Metropolis II.","Existing museum staff perform routine inspection and operation; the band captures incremental specialist and monitoring resources.","Unexpected damage, major component replacement, touring reinstallation, and structural certification are excluded."],"source_ids":["S2","S3","S6","S8"]}},"verified_pipeline_gates":{"externally_supported_problem":{"status":"YES","reason":"Museum cases document kinetic-art mechanical failure and substantial operational-maintenance needs, and a directly relevant suspended artwork exhibited unwanted coupled torsional and pendulum oscillations.","source_ids":["S2","S3","S4"]},"externally_credible_adopter_or_authorizer":{"status":"YES","reason":"Tate and LACMA are credible institutional adopters with expressed kinetic-art preservation needs; Tate's artist-foundation collaboration and AIC consent guidance identify credible authorizers. No adopter commitment to this candidate has been obtained.","source_ids":["S2","S3","S8"]},"distinct_testable_incremental_claim":{"status":"YES","reason":"The remaining claim can be tested as comparative prediction and reversible-control performance against symptom-led and component-independent comparators, with protected-mode, residual, repeatability, and physical-effect falsifiers. It is narrower than the supplied non-superiority statement and does not claim world novelty.","source_ids":["S4","S5","S6"]},"bounded_next_evidence_step":{"status":"YES","reason":"A single nonpublic sculpture configuration, fixed excitation and drive envelope, held-out responses, two comparators, one reversible control, preregistered stop rules, and explicit falsifiers bound the proposed study.","source_ids":["S5","S6","S7","S8"]},"no_unresolved_safety_or_authority_stop":{"status":"UNCERTAIN","reason":"Professional consent and specialist consultation pathways exist, and the candidate proposes low-amplitude reversible testing and rollback. For an actual sculpture, however, written owner or custodian consent, artist or estate criteria, engineering excitation limits, sensor compatibility, access safety, insurance, and venue operating authority remain unresolved.","source_ids":["S2","S6","S8"]},"credible_cost_scope_and_range":{"status":"UNCERTAIN","reason":"The bands have explicit scope and exclusions and are consistent with a multi-specialist modal campaign and documented museum labor intensity, but no directly comparable 2026 vendor quotation, labor schedule, equipment rental quote, or museum budget was found among the eight sources.","source_ids":["S2","S3","S5","S6"]}},"next_evidence_step":"Partner with one museum and select one nonpublic suspended kinetic sculpture with documented concerning motion. Before handling, obtain written custodian, conservator, engineer, and artist or authorized-representative approvals; declare protected trajectories and acoustics, prohibited contact or clearance metrics, excitation limits, and numeric pass thresholds. Record repeated baseline operation and three low-amplitude excitations with remote optical tracking plus minimally attached reference sensors. Fit the candidate modal model on training trials and compare held-out predictions against (A) symptom-led single-component models and (B) a regularized full-state nonmodal response model using identical data. Preregister falsification if mode shapes are not repeatable, optical and reference sensors materially disagree, held-out error does not beat both comparators, residuals remain structured, modes change identity, or friction/contact produces amplitude dependence outside tolerance. Only after these checks, predict and test one duplicated controller preset or removable damping placement. Advance only if the physical trial achieves the preregistered prohibited-motion reduction while protected-mode and acoustic deviations remain within tolerance and no residual, contact, condition, or safety stop fires.","blocking_evidence":["No museum, named sculpture, owner or custodian, artist or estate, engineer, or funder has committed to the study.","No baseline motion data demonstrate stable, observable modes or show that a component-level defect is insufficient.","No artist-authorized numerical definition of protected and prohibited motion or acoustic character exists.","No work-specific excitation, clearance, fatigue, sensor-attachment, access, electrical, or operating-safety limits have been approved.","No comparative result shows that the modal model predicts held-out trajectories or reversible-control effects better than symptom-led or nonmodal alternatives.","No physical trial shows that a predicted control reduces prohibited motion without displacing protected behavior or growing structured residuals.","No supplier or consultant quotations substantiate the 2026 cost bands.","Prevalence across kinetic-art collections, realized impact, market size, patentability, freedom to operate, and world novelty remain unmeasured."],"research_disposition":"PARTNERED_RESEARCH_PROGRAM","world_novelty_boundary":"The search establishes substantial collision with experimental modal analysis, kinetic-art conservation practice, and a 2025–2026 study that modeled and suppressed two unwanted modes in a cable-suspended artwork. It did not find the complete combination of empirical operator-free mode identification, artist-declared protected and prohibited modes, held-out residual qualification, coupling and drift monitoring, and conservation-specific reversible-control authority. This was a bounded eight-source search, not a systematic literature, product, standards, patent, or worldwide practice review; world novelty, patentability, freedom to operate, market size, and realized impact are unmeasured.","arm":"COMPLETE_PROPOSAL_PORTFOLIO","candidate_version":0,"controller_recommendation":{"action":"STOP_EMPIRICAL_RESEARCH_NEEDED","repairable":false,"material_progress_observed":true,"progress_targets":["Secure a named museum partner, target sculpture, written authority chain, and data-access agreement.","Preregister numerical protected-mode, prohibited-motion, held-out-error, residual, repeatability, spectral-separation, and safety thresholds.","Obtain work-specific engineering limits and conservator approval for sensors, excitation, access, handling, rollback, and withdrawal.","Run the three-way held-out comparison between the modal model, symptom-led component models, and a nonmodal full-state model.","Validate one reversible predicted control physically and record cross-mode, acoustic, residual, condition, and safety outcomes.","Obtain itemized 2026 quotations or internal resource estimates for staff, access, equipment, insurance, analysis, documentation, and monitoring."],"reason":"Web evidence verifies the problem, credible authorities, technical feasibility, and substantial prior-art collision, but the only meaningful remaining incremental claim is whether this governance-qualified modal workflow improves prediction and reversible treatment on an actual sculpture without harming protected behavior. That evidence requires proprietary work data, institutional and artistic consent, and a live low-amplitude intervention; bounded web research cannot resolve it."},"proposal_index":2}