{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","cell_id":"activation_decay_measurement__chemistry_materials","arm":"CONSTRAINED_HIGH","candidate_id":"activation_decay_measurement__chemistry_materials__CONSTRAINED_HIGH","decision":"PROPOSAL","abstention_reason":null,"proposal":{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","cell_id":"activation_decay_measurement__chemistry_materials","arm":"CONSTRAINED_HIGH","candidate_id":"activation_decay_measurement__chemistry_materials__CONSTRAINED_HIGH","proposal_index":1,"version":0,"title":"Thermal-Activation Witness for Timing Vitrimer Composite Repair","problem":"In a sequential field-repair setup for a cracked vitrimer composite, a localized heater must be removed before a consolidation clamp can occupy the repair site. Heating temporarily raises bond-exchange activity and polymer-chain mobility, but that activated state decays as the joint cools. A fixed transfer time can therefore place pressure on some joints after the useful exchange window has closed, especially when laminate thickness, fiber fraction, ambient temperature, or fixture heat sinking varies.","actors":["Composite repair technician","Repair-process engineer","Cracked vitrimer laminate and compatible repair patch","Localized induction or resistive heater","Mechanical consolidation clamp","Bond-line thermocouple or removable thermochromic witness tab","Mechanical-test laboratory"],"observable_state":"The directly observable state is bond-line-edge temperature versus time after heater removal, supplemented by a reversible thermochromic witness on a thermally coupled removable tab. Destructive coupon tests measure the resulting interfacial repair response under controlled peak temperature, pressure, and delay.","consequence":"If pressure is applied only after thermal activation has decayed, crack faces may contact after bond exchange and segmental mobility have become too slow for the intended repair cycle, producing an incompletely reconnected interface that can separate under later loading.","affected_objective":"Reproducible restoration of interfacial continuity in thermally reprocessable composite repairs without assuming that a previously heated joint remains exchange-active.","intervention":"Calibrate the cooling decay of the actual laminate geometry using co-heated witness coupons, then associate the measured thermal state with a minimum exchange-effective repair condition determined by mechanical specimens. During each repair, apply a bounded local heat pulse, remove the heater, and use a bond-line-edge thermocouple or removable thermochromic witness to expose whether the joint is still within that physically calibrated state. Seat the mechanical clamp while the state remains above threshold; if it has physically expired, reheat the joint rather than relying on the original pulse. Heating accelerates reversible bond exchange and chain mobility, while pressure supplies intimate crack-face contact; the witness is a direct material-state measurement rather than an analytics system.","structural_mapping":[{"archetype_element":"Activation Target Definition","domain_realization":"The target state is sufficient reversible bond-exchange activity and segmental mobility at the damaged interface to permit reconnection while crack faces are compressed."},{"archetype_element":"Prime","domain_realization":"A localized induction or resistive heat pulse raises the repair region into an exchange-active thermal state."},{"archetype_element":"Baseline Activation Capture A(0)","domain_realization":"A bond-line thermocouple records the temperature immediately after heater removal, with companion coupons characterizing the corresponding immediate-clamp repair response."},{"archetype_element":"Observable Activation Proxy","domain_realization":"Local temperature and the transition state of a thermally coupled reversible thermochromic witness proxy the temperature-dependent exchange state; coupon mechanics validate whether that proxy is fit for purpose."},{"archetype_element":"Delayed Probe Schedule A(t)","domain_realization":"Identically heated coupons are clamped after several bounded delays spanning fresh, intermediate, and deliberately cooled conditions while their local cooling traces are recorded."},{"archetype_element":"Decay Curve Model","domain_realization":"A simple empirical cooling curve or conservative piecewise envelope relates elapsed time and local temperature for each tested laminate geometry; elaborate algorithmic inference is unnecessary."},{"archetype_element":"Usable Activation Threshold","domain_realization":"The threshold is the lowest observed local thermal state for which predeclared interfacial mechanical and failure-mode criteria remain satisfied in the bounded coupon experiment."},{"archetype_element":"Intervention Window Rule","domain_realization":"The crack faces are consolidated while the directly observed joint state remains on the active side of the calibrated threshold."},{"archetype_element":"Refresh or Reprime Protocol","domain_realization":"A joint that cools past the threshold receives another bounded physical heat pulse before consolidation instead of being treated as still activated."},{"archetype_element":"Context and Load Register","domain_realization":"Laminate thickness, reinforcement content, patch geometry, ambient temperature, heater coupling, clamp-transfer delay, and fixture heat sinking are recorded because they alter thermal decay."},{"archetype_element":"Expiry Boundary and Stop Rule","domain_realization":"Crossing the calibrated thermal boundary ends reliance on the preceding heat pulse; the material must be reheated or the repair attempt stopped."}],"mechanism_mapping":[{"mechanism_slug":"Time-Lagged Activation Probe","role":"Measure bond-line temperature and repair response at increasing delays after an otherwise matched heat pulse.","counterfactual_removal":"Without delayed probes, the process would know only the fresh state and could not establish whether activation persists through realistic heater-to-clamp transfers."},{"mechanism_slug":"Decay Curve Fitting","role":"Represent conductive and convective cooling with a conservative empirical curve or piecewise envelope.","counterfactual_removal":"Without a decay representation, observations from isolated delays would not define the interval over which the thermal state is expected to cross the usable boundary."},{"mechanism_slug":"Activation Window Thresholding","role":"Translate the validated temperature-dependent material state into a physically observable active-versus-expired boundary.","counterfactual_removal":"Without thresholding, the temperature trace would not distinguish a merely warm joint from one meeting the predeclared repair condition."},{"mechanism_slug":"Refresh Cadence Adaptation","role":"Permit a new bounded heat pulse when the actual geometry cools faster than the calibrated transfer window allows.","counterfactual_removal":"Without physical reactivation, an expired joint would remain below the exchange-effective state even if its expiry were correctly observed."},{"mechanism_slug":"Contextual Reactivation","role":"Reheat the damaged interface itself, with its patch and fixture present, so activation is restored in the material volume where exchange is needed.","counterfactual_removal":"Heating a remote coupon or relying on an earlier pulse would not restore mobility at the cooled crack interface."},{"mechanism_slug":"Decay Segment Comparison","role":"Compare cooling segments across laminate geometries and ambient conditions to identify where a single transfer window is not defensible.","counterfactual_removal":"Without segment comparison, a thick or strongly heat-sunk configuration could inherit a timing boundary measured for a thermally dissimilar specimen."},{"mechanism_slug":"Staleness Boundary Enforcement","role":"Treat the prior heat pulse as physically expired once the witness crosses the calibrated boundary.","counterfactual_removal":"Without the expiry boundary, the setup could continue to classify a previously heated but cooled interface as exchange-active."}],"causal_chain":["A localized heat pulse deposits thermal energy in the damaged vitrimer interface.","Higher local temperature increases reversible bond-exchange kinetics and polymer segmental mobility without requiring a software command or informational incentive.","After heater removal, conduction into the laminate and fixture plus heat loss to the surroundings reduce local temperature, so the exchange-active state decays.","Delayed coupon measurements relate this directly observed decay to interfacial repair outcomes under matched pressure and peak-temperature conditions.","A thermocouple or thermochromic witness exposes whether an individual joint remains within the validated thermal state during transfer to the clamp.","Applying pressure before expiry maintains intimate crack-face contact while exchange and rearrangement remain active.","If the state has expired, a fresh physical heat pulse restores thermal activation before consolidation.","Holding pressure through the bounded repair cycle permits interfacial network rearrangement; later mechanical testing determines whether the intended material consequence occurred."],"baseline":"The baseline is a fixed stopwatch delay after a nominally identical heat pulse, with no measurement of the individual joint's cooling state. It assumes that activation persists for the scheduled transfer interval despite changes in geometry, ambient conditions, heater contact, and fixture heat sinking.","nearest_rivals":["Keep the repair under a continuously heated platen while pressure is applied, eliminating the heater-to-clamp transfer but requiring compatible access and sustained heating.","Apply induction or resistive heating through the clamp so activation and pressure overlap, at the cost of a more specialized fixture.","Use a fixed transfer-time allowance derived from worst-case cooling rather than measuring each joint, accepting either conservative timing or possible state mismatch.","Modify the resin or add a compatible catalyst to lower the exchange temperature, which changes material formulation rather than measuring the existing activation decay.","Use infrared surface thermography, which is noncontact but may not represent the buried bond-line state when through-thickness gradients are substantial."],"remaining_contrastive_claim":"Compared with a fixed elapsed-time rule, a locally coupled thermal witness should classify the current exchange-relevant state more faithfully when cooling varies between specimens. Compared with continuous or in-clamp heating, it preserves a sequential portable heater-and-clamp arrangement. The claim is limited to whether witness-defined timing predicts the predeclared coupon repair criteria and whether physical reheating restores an expired specimen's classification and outcome; no effect size is asserted.","authority_safety":{"decision_authority":"A materials laboratory lead with responsibility for thermal-process safety and composite mechanical testing decides whether the coupon evidence warrants any later scale-up.","authorized_first_step":"Run only a guarded benchtop coupon study within pre-established temperature, electrical, pressure, and ventilation limits; no load-bearing article or field repair is authorized.","excluded_actions":["No production, field, structural, or safety-critical repair","No heating above the internally established degradation-safe bound","No change to resin chemistry or catalyst loading","No substitution of witness color for calibrated temperature measurements during initial validation","No autonomous software control or unsupervised energization","No claim that a coupon threshold qualifies untested laminate geometries or environments"],"halt_rollback":"De-energize the heater, release pressure after the apparatus reaches a safe state, and quarantine specimens if temperature overshoot, smoke, odor, electrical fault, unexpected exotherm, fixture deformation, witness delamination, or unstable thermal readings occur. Coupon specimens can be discarded under the laboratory's material-handling rules; no deployed object is altered in the first step."},"negative_tests":{"strongest_counterevidence":"The strongest counterevidence would be that, after peak temperature, total thermal dose, pressure, and surface preparation are controlled, repair response does not vary with the measured post-heating decay state, or that total heat exposure rather than residual activation at crack-face contact explains the outcome.","problem_falsifier":"The problem is falsified for the tested setup if deliberately delayed specimens show no deterioration in interfacial mechanical response or failure mode across the full realistic transfer interval, despite verified cooling through the proposed state range.","intervention_falsifier":"The intervention is falsified if the local witness fails to predict the predeclared repair criterion better than the fixed timer, if nominally identical witness states produce inconsistent outcomes beyond the accepted experimental variability, or if reheating an expired specimen does not restore the result seen in freshly clamped controls.","risks":["Localized overheating could degrade the polymer, damage reinforcement sizing, or release fumes.","Induction or resistive heating can create electrical, burn, fire, and hot-spot hazards.","The bond-line edge may cool differently from the buried crack plane, producing a misleading witness state.","A thermochromic coating or witness tab could contaminate the interface if placed improperly.","Repeated heating may alter the material independently of activation refresh.","Excessive clamp pressure could distort the laminate or expel material from the interface.","A threshold calibrated on one geometry or ambient condition could create false confidence when transferred to another.","Destructive mechanical results may be confounded by specimen preparation, crack geometry, or fixture alignment."]},"next_evidence_step":"Prepare 36 nonstructural coupons spanning two laminate geometries and six matched conditions with three replicates per cell: no heat, immediate clamp, two intermediate delays, a deliberately expired delay, and the same expired delay followed by one bounded reheat. Record raw bond-line-edge temperature traces and a removable thermochromic witness state, hold peak temperature and clamp pressure within predeclared tolerances, then conduct one preselected interfacial mechanical test and document failure location. Before testing, define the thermal safety bound, the mechanical acceptance criterion, the timer baseline, and the rule for rejecting thermally mismatched runs. Use the results only to decide whether a witness threshold is identifiable and whether a larger validation study is justified.","prior_art_status":"UNSEARCHED","diversity_from_prior_proposals":"Not assessed because runtime isolation prohibits inspection of other candidates. Within this record, the realization is specifically a thermal, mechanical, and direct-measurement intervention for a decaying material exchange state rather than an informational reminder or governance system.","revision_record":{"parent_version":null,"progress_targets_addressed":["Construct one independently recognizable chemistry-and-materials problem","Preserve the activation-decay, delayed-probe, threshold, refresh, and expiry structure","Make the essential effect physical, energetic, mechanical, and directly measurable","State serious rivals and a bounded contrastive claim","Specify authority limits, falsifiers, risks, and a small first evidence step"],"conceptual_changes":["Initial version maps transient cognitive priming to temporary thermally activated bond exchange in a vitrimer repair interface.","The action window is defined by a material-state threshold rather than an exposure record or software prediction."],"operational_changes":["Initial version limits work to guarded, nonstructural benchtop coupons.","The proposed setup uses a physical heater, local thermal witness, and mechanical clamp with a reheat-on-expiry option."],"evidence_changes":["No external evidence or prior-art search was used.","The first evidence step includes fresh, delayed, expired, reheated, and no-heat conditions with predeclared criteria."],"claim_changes":["No novelty, prevalence, demand, or effect-size claim is made.","The remaining claim is restricted to state classification and coupon-level causal discrimination against a fixed-timer baseline."]},"substrate_contract":{"primary_allowed_process":"HYBRID_OTHER_ALLOWED_PRIMARY","counterfactual_independence":"The essential effect is produced by thermal energy increasing bond-exchange kinetics and segmental mobility, mechanical pressure bringing crack faces into contact, conductive and convective cooling causing activation decay, and a temperature-responsive instrument or material witness exposing that decay. Removing software, algorithmic inference, dashboards, reporting, incentives, authorization systems, and procedural enforcement does not eliminate heating, cooling, thermochromic response, pressure, bond exchange, or interfacial rearrangement. A person may operate the bounded apparatus, but no analytical recommendation or governance rule creates the material effect.","forbidden_channel_audit":"No algorithm, database, dashboard, recommender, information-routing system, or software control loop is part of the intervention. Offline curve fitting is optional calibration support and can be replaced by a plotted cooling trace and conservative physical threshold. The witness directly responds to temperature and is not a sensor whose operative effect is downstream analytics. Safety authorization constrains experimentation but is not presented as the repair mechanism. The indispensable channels are energetic heating, material cooling and bond exchange, mechanical consolidation, and direct measurement instrumentation."}}}