{"abstention_reason":null,"arm":"SUBSTRATE_DIVERSE_P2","candidate_id":"abductive_explanation_selection__engineering_design__SUBSTRATE_DIVERSE_P2","cell_id":"abductive_explanation_selection__engineering_design","decision":"PROPOSAL","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","proposal":{"actors":["Battery-module thermal design engineer","Electrical interconnect engineer responsible for busbar and joint geometry","Test engineer responsible for thermal-vacuum and load profiles","Instrumentation engineer responsible for witness-laminate calibration and thermal-response limits","Battery safety authority controlling energized tests and hardware disposition"],"affected_objective":"Identify the physical origin of intermittent battery-module overheating so redesign targets the responsible heat path without treating a transient electronic reading as established root cause.","arm":"SUBSTRATE_DIVERSE_P2","authority_safety":{"authorized_first_step":"The instrumentation engineer may calibrate and pattern-test witness laminates on a non-energized dummy-cell thermal-fluid surrogate using guarded external heaters and approved coolant-temperature changes.","decision_authority":"The instrumentation engineer owns calibration validity; the thermal design engineer may rank explanations; the battery safety authority controls installation on energized hardware, test limits, shutdown criteria, disposition, and any safety-significant redesign.","excluded_actions":["Installing the laminate on flight, production, damaged, or energized battery hardware without battery-safety approval","Using a witness pattern alone to declare an internal cell defect or supplier fault","Exceeding existing temperature, voltage, current, pressure, or state-of-charge limits","Changing busbar torque, coolant geometry, cell restraints, protection thresholds, or qualification requirements on the explanation owner's authority","Reusing a transformed laminate or substituting an uncalibrated production lot"],"halt_rollback":"Stop if the laminate changes electrical clearance, coolant contact, venting, thermal resistance, or containment integrity; if its calibration controls fail; or if the surrogate response exceeds approved limits. Remove the laminate, preserve its physical state and the untouched baseline article, and return the explanation to unresolved status."},"baseline":"An engineering battery module intermittently shuts down after one thermocouple reports a sharp local temperature excursion during a current step. The module cools before inspection, neighboring sensors show only modest changes, and sparse electronic traces cannot distinguish a resistive joint hotspot, internal cell heating, coolant-flow maldistribution, chamber heating, or sensor artifact.","candidate_id":"abductive_explanation_selection__engineering_design__SUBSTRATE_DIVERSE_P2","causal_chain":["A load qualification produces a brief single-channel temperature spike and protective shutdown, but post-test inspection reveals no persistent visible hotspot.","Sparse sensor placement, thermal lag, electromagnetic disturbance, and loss of the transient after shutdown allow materially different heat sources to produce similar electronic records.","A thin removable witness laminate places sealed irreversible phase-change pixels with several calibrated transition temperatures across busbar joints, cell-can regions, coolant-channel paths, and a chamber-reference tab.","During a later authorized exposure, local heat physically transforms pixels whose thresholds are crossed, leaving a spatially distributed peak-temperature memory that persists after power loss and cooldown.","A joint-centered nested transition pattern supports resistive interconnect heating; a cell-centered pattern supports internal cell heating; an elongated channel-following pattern supports coolant maldistribution; a broad field including the reference tab supports chamber heating; and an electronic spike without the calibrated physical transitions supports an instrumentation rival.","The leading explanation is selected only if the physical pattern covers the anomaly and materially outperforms its nearest rival after accounting for laminate response time, contact resistance, and heat spreading; otherwise a ranked tie remains.","The selected account stays action-limited because threshold pixels record where temperature bands occurred but do not by themselves prove the initiating defect or exact event time.","The persistent material trace guides a subsequent targeted physical inspection or separately authorized test, while contradictory patterns, failed controls, or an unpredicted hotspot reopen the explanation."],"cell_id":"abductive_explanation_selection__engineering_design","consequence":"Without a persistent spatial trace, engineers may redesign the busbar, cooling plate, cell restraint, or temperature sensing around the wrong mechanism, leaving the actual overheating path intact or adding unnecessary mass and thermal resistance.","diversity_from_prior_proposals":"This opportunity addresses transient battery-module overheating rather than coupled-load enclosure cracking. Its intervention is a distributed material-state temperature witness, not a documentary explanation gate, and its causal path runs from irreversible phase transitions to spatial heat-source discrimination rather than from record structure to review discipline.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","intervention":"Fit a non-flight engineering battery module with a removable Passive Thermal-Provenance Witness Laminate: a low-mass electrically insulating film carrying arrays of sealed irreversible phase-change microcapsule pixels at calibrated temperature thresholds, plus an exposed chamber-reference tab and same-lot control strip. Pixels are spatially registered to busbar joints, cell cans, and coolant paths. Their retained material-state pattern supplies candidate-specific evidence after a transient has ended, enabling an action-limited best-so-far explanation or a preserved tie. Photography or a spreadsheet may support comparison, but neither creates, detects, or stores the essential thermal evidence.","mechanism_mapping":[{"counterfactual_removal":"Without the physically distributed disconfirming probe, the same sparse electronic spike remains compatible with joint heating, cell heating, coolant maldistribution, chamber heating, and sensor artifact.","mechanism_slug":"disconfirming_probe_plan","role":"Implements rival-specific predictions as distinct spatial arrangements of irreversible threshold transitions."},{"counterfactual_removal":"Without a common fit comparison, an attractive hotspot pattern could be selected while ignoring thermal lag, heat spreading, failed control pixels, or a comparably fitting rival.","mechanism_slug":"inference_to_best_explanation_matrix","role":"Compares each candidate against hotspot location, threshold nesting, spatial extent, reference-tab state, electronic timing, calibration controls, and expected missing traces."},{"counterfactual_removal":"Without retained successive physical states and their registered observations, later inspections could overwrite knowledge of which temperature bands occurred during each exposure.","mechanism_slug":"abduction_log","role":"Pairs each single-use laminate's preserved material state with the explanation ranking and identifies failed predictions that require revision."}],"nearest_rivals":["Adding more conventional thermocouples or resistance-temperature detectors, which provides electronic time series but remains vulnerable to placement gaps, wiring disturbance, and power loss","High-speed infrared imaging, which requires optical access and may misread reflective busbars or hidden interfaces","Destructive teardown immediately after the first spike, which can disturb joint contact and coolant interfaces before the heat origin is localized","A thermal model fitted to the original sparse traces, which can rank assumed sources but cannot create missing physical observations"],"negative_tests":{"intervention_falsifier":"The intervention is falsified if equal-severity surrogate exposures at a busbar joint, dummy-cell center, coolant channel, and chamber boundary fail to produce repeatable and mutually distinguishable transition patterns, or if the laminate's response time is longer than the anomaly and all short pulses collapse to the same physical record.","problem_falsifier":"The problem is falsified if redundant, independently calibrated, high-bandwidth sensors already reproduce the event and localize its origin with spatial and temporal resolution sufficient to exclude the live rivals before redesign.","risks":["The laminate may perturb the thermal path it measures.","Short pulses may end before any pixel transitions, creating false reassurance.","Lateral heat spreading may make distinct sources appear similar.","Manufacturing variation, aging, pressure, or chamber conditions may shift transition thresholds.","A sensor artifact and a real sub-threshold hotspot could be incorrectly conflated.","Threshold transitions record temperature bands but not exact timing, duration, or electrical initiation.","Attaching the laminate near cells or conductors could compromise clearance, venting, or containment if its materials and geometry are not safety-approved."],"strongest_counterevidence":"A calibrated surrogate pulse matching the measured anomaly's estimated duration and energy produces no reliable transition, or produces indistinguishable patterns from joint-, cell-, and coolant-origin sources, showing that the material witness lacks the temporal or spatial resolution needed for explanation selection."},"next_evidence_step":"On a non-energized dummy-cell module with representative busbar and coolant geometry, apply four separately controlled, safety-bounded exposures: a joint-localized heater pulse, a cell-centered heater pulse, a coolant-channel temperature perturbation, and a uniform chamber-temperature rise. Use fresh same-lot laminates and blinded pattern review. Pre-register the predicted spatial signature for each source and require successful control pixels, repeatability, and source discrimination before requesting any installation on an energized engineering module.","observable_state":"After exposure, the removed laminate contains a registered map of unchanged and irreversibly transformed threshold pixels over each joint, cell, coolant path, and reference tab. The accompanying observation record distinguishes those material states from interpretation and reports calibration-lot controls, response-time limits, the bounded explanandum, live candidates, nearest rival, fit comparison, defeasibility label, action boundary, and revision triggers.","prior_art_status":"UNSEARCHED","problem":"A battery engineering module intermittently reports a sharp localized temperature excursion during electrical-load qualification, yet the transient disappears after shutdown and leaves no obvious visible damage. Existing sparse sensors cannot establish whether heat originated at a resistive busbar joint, inside a cell, along a poorly supplied coolant path, in the chamber environment, or in the measurement channel itself.","proposal_index":2,"remaining_contrastive_claim":"Unlike additional electronic sensors, optical imaging, immediate teardown, or model fitting, the laminate creates a power-independent, spatially distributed material memory of crossed temperature thresholds at normally hidden design interfaces; that new physical evidence can discriminate heat-origin explanations after the module has cooled, while leaving exact timing and initiating-defect claims explicitly unresolved.","revision_record":{"claim_changes":[],"conceptual_changes":[],"evidence_changes":[],"operational_changes":[],"parent_version":null,"progress_targets_addressed":["Materially independent engineering problem and intervention","Measurement/instrumentation as the primary causal substrate","Explicit separation of observed material state from heat-source interpretation","Candidate set with common, high-impact, environmental, and measurement rivals","Best-so-far or tie rule with defeasibility and action limits","Safe surrogate calibration before energized use"]},"schema_version":1,"structural_mapping":[{"archetype_element":"Surprising Observation Record","domain_realization":"A single temperature channel spikes during a current step and triggers shutdown while neighboring channels change modestly and cooled hardware shows no obvious damage."},{"archetype_element":"Explanandum Boundary","domain_realization":"Explain the physical origin region of the transient heat during the qualified load step, without claiming the exact initiating defect or general cell reliability."},{"archetype_element":"Candidate Explanation Set","domain_realization":"Resistive busbar-joint heating, internal cell heating, coolant-flow maldistribution, uniform chamber heating, and temperature-channel artifact."},{"archetype_element":"Explanatory Fit Criteria","domain_realization":"Spatial center, threshold nesting, propagation along conductive or coolant paths, reference-tab response, agreement with electronic timing, laminate response limits, repeatability, and required ad hoc assumptions."},{"archetype_element":"Rival Comparison Record","domain_realization":"The leading source pattern is compared directly with the nearest spatially plausible rival and with the sensor-artifact account."},{"archetype_element":"Best-So-Far Explanation or Tie","domain_realization":"A heat-origin explanation becomes action-limited only when its registered physical signature is repeatable and distinct; ambiguous or absent transitions preserve a ranked tie."},{"archetype_element":"Defeasibility Status Label","domain_realization":"The output is labeled action-limited, unresolved, or instrumentation-inadequate and cannot alone authorize teardown, supplier attribution, or redesign."},{"archetype_element":"Discriminating Evidence Plan","domain_realization":"Known-source surrogate exposures test whether irreversible threshold maps can distinguish joint, cell, coolant, and chamber heating before energized deployment."},{"archetype_element":"Revision Trigger","domain_realization":"Reopen the ranking when controls fail, thermal lag exceeds event duration, the pattern is non-repeatable, two sources remain indistinguishable, or subsequent inspection contradicts the predicted origin."}],"substrate_contract":{"counterfactual_independence":"If all software, algorithms, databases, workflow gates, incentives, training, and information-routing rules are removed, heat still causes calibrated microcapsule pixels to undergo and retain irreversible material transitions at their physical locations. A human can inspect the laminate directly and recover the essential distributed threshold evidence.","forbidden_channel_audit":"No governance decision, organizational process, model, database, or digital controller generates the temperature evidence or makes it persist. Optional cameras, tables, and review records only document and compare states already stored in the laminate. The intervention fails or succeeds based on material threshold accuracy, response time, placement, and thermal coupling.","primary_allowed_process":"MEASUREMENT_INSTRUMENTATION"},"title":"Passive Thermal-Provenance Witness Laminate for Intermittent Battery Hotspots","version":0},"schema_version":1}