{"closest_prior_art":[{"name":"EP2906944B1, System and method for measuring absorbed humidity in a composite material","overlap":"Uses a humidity sensor and processing unit to infer absorbed moisture in composite material; during drying, downstream-gas humidity combined with diffusion analysis can indicate desorption rate and remaining moisture content.","remaining_difference":"It does not disclose a staged sandwich-layup ledger that accounts in grams across core, prepreg, adhesive, consumables, and trapped gas; reconciles flows against whole-coupon mass; preserves residuals; and gates cure entry under design-authority-set thresholds.","source_ids":["SRC3"]},{"name":"Void formation in composite prepregs – Effect of dissolved moisture","overlap":"Conditions uncured prepreg at controlled humidity, directly measures resin moisture, cures laminates, and tests the relationship between pre-cure moisture and void formation.","remaining_difference":"It is an effects experiment, not a multi-reservoir stock-and-flow control system or cure-entry decision gate.","source_ids":["SRC2"]},{"name":"ASTM C272/C272M-18(2024)","overlap":"Standardizes moisture-absorption testing of sandwich cores, including mass measurement, conditioning, geometry, and the influence of facings.","remaining_difference":"It characterizes core specimens rather than maintaining and reconciling a boundary-complete moisture stock during staged layup manufacture or controlling cure release.","source_ids":["SRC1"]},{"name":"HexPly Prepreg Technology guidance","overlap":"Prescribes moisture-proof storage, avoidance of condensation, accumulated out-time recording, vacuum processing, and material-specific cure controls.","remaining_difference":"These are handling, exposure-time, and recipe controls; the guidance does not estimate total retained water across layup reservoirs or reconcile it with mass and exhaust measurements.","source_ids":["SRC4"]}],"contrastive_claim_falsifier":"On blinded scrap coupons spanning approved conditioning histories, falsify the claim if the reconciled ledger neither changes cure-entry classifications relative to baseline proxies nor improves held-out moisture-state classification, or if predicted stock changes fail the preregistered gravimetric tolerance after the approved equilibration delay.","contrastive_claim_remaining":"For staged sandwich layups containing multiple coupled moisture reservoirs, a boundary-defined water estimate reconciled against precision-mass change and exhaust humidity can produce a more accurate and sometimes different cure-entry hold/release decision than accumulated out-time, instantaneous humidity, or completion of a fixed drying recipe alone.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","gates":{"adequate_source_search":{"rationale":"Four requested lanes were searched with direct wording, older moisture/desorption terminology, product and standards language, and component combinations. Four opened sources span ASTM, Elsevier, a patent record, and Hexcel; they include an official standard, primary research, and first-party guidance.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"bounded_next_test":{"rationale":"A prespecified scrap-coupon comparison is bounded and measurable using conditioning histories, precision mass, exhaust humidity, equilibration delays, residual tolerances, and baseline-proxy classifications. ASTM and the primary study establish workable conditioning and direct moisture-measurement precedents; the patent establishes model-assisted exhaust-humidity inference.","source_ids":["SRC1","SRC2","SRC3"],"status":"PASS"},"distinct_testable_claim":{"rationale":"The retained art separately covers core absorption testing, direct prepreg-moisture experiments, humidity/diffusion-based inference, and conventional handling controls, but does not show the claimed combination of multi-reservoir gram accounting, mass-flow reconciliation, explicit residuals, and an authority-controlled pre-cure gate.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"no_obvious_safety_or_authority_stop":{"rationale":"The proposed first test is limited to scrap coupons and existing approved storage, temperature, vacuum, exposure, and cure-envelope limits. Production release and process changes remain with the design authority, while stop, quarantine, and rollback rules address disagreement, damage, and overdrying. Manufacturer and ASTM materials reinforce adherence to safety data, qualified conditions, and application-specific safety controls.","source_ids":["SRC1","SRC4"],"status":"PASS"},"supported_problem":{"rationale":"The standard recognizes water absorption and mass effects in faced sandwich cores; primary research links dissolved pre-cure prepreg moisture to void formation; and first-party guidance treats condensation avoidance and moisture-proof storage as necessary. Evidence for the exact prevalence of an unobserved whole-layup carryover state under current production controls is indirect, but the underlying problem is visible.","source_ids":["SRC1","SRC2","SRC4"],"status":"PASS"}},"prior_art_disposition":"ADJACENT_PRIOR_ART","problem_evidence":{"finding":"Water uptake in sandwich core and uncured prepreg is directly documented, and pre-cure moisture can contribute to cure voids. Existing standard and manufacturer practices emphasize specimen absorption, storage, condensation avoidance, out-time, and prescribed processing. The sources only indirectly establish that common production controls fail to represent total retained water across all sealed-layup reservoirs, so the full operational problem is partly supported.","source_ids":["SRC1","SRC2","SRC4"],"status":"PARTLY_SUPPORTED"},"research_id":"eoa_inverse_innovation_exp13_light_screen_20260806","schema_version":1,"screen_id":"E13P011","screen_survival":true,"search_lanes":{"component_combination":{"no_result_note":null,"queries":["composite manufacturing pre cure moisture content measurement gravimetric vacuum exhaust humidity","sandwich layup cure entry moisture limit honeycomb core dry weighing","composite sandwich panel retained moisture honeycomb core cure voids drying gravimetric study"],"source_ids":["SRC1","SRC2","SRC3"]},"direct_problem_and_intervention":{"no_result_note":null,"queries":["patent composite layup moisture monitoring cure humidity mass balance","composite sandwich panel retained moisture honeycomb core cure voids drying gravimetric study","US20160370309A1 Boeing allowable moisture content composite structure Google Patents"],"source_ids":["SRC2","SRC3"]},"products_practices_and_standards":{"no_result_note":null,"queries":["standard moisture absorption sandwich core ASTM C272 D5229","site:hexcel.com prepreg storage handling moisture condensation technical data sheet","prepreg moisture control out time humidity vacuum drying composite manufacturing"],"source_ids":["SRC1","SRC4"]},"synonyms_and_historical_terms":{"no_result_note":null,"queries":["remaining moisture content laminate exhaust humidity drying composite patent","composite honeycomb moisture desorption vacuum drying mass loss","prepreg out-time moisture absorption cure kinetics viscosity"],"source_ids":["SRC2","SRC3","SRC4"]}},"sources":[{"claims_supported":["Sandwich core materials absorb water under immersion or high-relative-humidity conditioning.","Absorbed-water mass can affect sandwich-structure behavior and material properties.","Core geometry, facings, conditioning, and mass-measurement methods influence reported absorption."],"publisher":"ASTM International","source_id":"SRC1","source_type":"OFFICIAL_STANDARD","title":"ASTM C272/C272M-18(2024): Standard Test Method for Water Absorption of Core Materials for Sandwich Constructions","url":"https://store.astm.org/c0272_c0272m-18r24.html"},{"claims_supported":["Uncured prepreg conditioned at elevated humidity contains measurable moisture.","Dissolved moisture can evolve during cure and promote void nucleation and growth.","Pre-cure moisture can be measured directly and compared with cured-laminate void outcomes."],"publisher":"Elsevier, Composites Science and Technology","source_id":"SRC2","source_type":"PRIMARY_RESEARCH","title":"Void formation in composite prepregs – Effect of dissolved moisture","url":"https://www.sciencedirect.com/science/article/pii/S0266353810003544"},{"claims_supported":["Absorbed moisture in composite material can be inferred using a humidity sensor and processing unit.","Monitoring downstream gas humidity during drying and applying moisture-diffusion analysis can indicate desorption rate and remaining laminate moisture.","A contemporaneous humidity observation may be converted into an estimated local absorbed-moisture content."],"publisher":"European Patent Office record via Google Patents","source_id":"SRC3","source_type":"OTHER","title":"EP2906944B1: System and method for measuring absorbed humidity in a composite material","url":"https://patents.google.com/patent/EP2906944B1/en"},{"claims_supported":["Prepreg should be stored frozen in sealed moisture-proof packaging and warmed before opening to avoid moisture contamination.","Accumulated out-time between freezer removal and cure should be recorded.","Vacuum processing removes trapped air and is governed by product-specific processing and safety precautions."],"publisher":"Hexcel Corporation","source_id":"SRC4","source_type":"FIRST_PARTY_PRODUCT","title":"HexPly Prepreg Technology","url":"https://www.hexcel.com/wp-content/uploads/2026/01/Prepreg_Technology-2.pdf"}],"world_novelty_boundary":"This bounded public-web screen found adjacent art for gravimetric core testing, direct prepreg-moisture measurement, humidity/diffusion-based remaining-moisture inference, and conventional storage/out-time controls, but no opened source disclosed their proposed staged, multi-reservoir, reconciled cure-entry ledger combination. This does not establish world novelty, patentability, market size, expert acceptance, or realized value; terminology, paywalls, unindexed documents, proprietary process specifications, and unsearched patent families may contain closer art."}