When a structural assumption is wrong,
the failure is catastrophic.
Engineering decisions run on models that are always simplifications: finite element meshes that approximate reality, material properties sampled from batches, and loading scenarios that never cover every combination. Every system you trust today hides those simplifications in safety factors. ARACHNE labels them as ignorance and escalates.
Four gaps no current
tool admits openly.
These are not edge cases. They are the daily reality of engineering operations. And every existing system handles them the same way: it guesses, assigns a confidence score, and moves on.
Design Review with Incomplete Load Case Coverage
Structural designs are validated against load cases defined in standards. Real-world loading often exceeds the envelope. The gap is covered by safety factors, not explicit analysis.
Material Certification Gaps in Supply Chain
Material properties are certified by batch testing. Individual components may come from untested batches. Traceability systems rarely verify every heat number.
Finite Element Model Validation Status
FEA models are validated against test articles at design time. Production articles may differ. The validation status of the model against the as-built article is rarely checked.
Weld Quality Verification at Scale
Welds are inspected by sampling. The statistical basis for sample size is often historical, not calculated. Critical welds may be in the uninspected population.
Every claim carries proof.
Every gap carries a label.
The Margin Expansion organ binds 36 required input nodes before any bounded action. In pharma, those nodes include stability status, CoA completeness, safety signal provenance, and regulatory precedent. Missing any one is not a failure—it's labeled ignorance, escalated, and recorded.
Stability-Gated Batch Release
Hard gate: no batch releases without completed stability profile or explicit operator override with versioned reasoning.
PROVEN · RECOMPUTABLESignal Provenance Tracking
Every safety signal traced to source database, query date, and confidence threshold. Stale signals flagged automatically.
TESTED · VALIDATING LIVECoA Completeness Verification
Incoming certificates checked against 14 required fields. Incomplete CoAs halt the gate—never silently accepted.
ARCHITECTURE · DOCUMENTEDRegulatory Delta Audit
Every submission tracked against its evidentiary base. When evidence evolves, the delta is computed and surfaced.
IN DEVELOPMENTWhere proof replaces
confidence scores.
These are not aspirational. Each use case below maps to a live, checkable proof in the validation ledger. You can recompute every claim yourself.
Bridge Load Rating with Traffic Data Gaps LIVE PROOF
A state DOT evaluates whether to post load restrictions on an aging bridge. ARACHNE evaluates the rating against 36 nodes: as-built drawings, material test records, inspection history, traffic load data, and deterioration models.
- Traffic load data 8 years old → labeled ignorance, not assumed current
- Deterioration model calibrated on 3 bridges, not this one → flagged
- Material test records from 1972, pre-ASTM standard → provenance gap
- Load posting recommendation includes explicit uncertainty bounds
Pressure Vessel Requalification ARCHITECTURE PROVEN
A chemical plant pressure vessel reaches its 10-year requalification interval. ARACHNE evaluates the requalification decision against 36 nodes: inspection results, corrosion rate data, pressure cycle history, and material degradation models.
- Missing certificates halt qualification—not waived, not assumed
- Pressure cycle history from SCADA, missing 6 months of data → ignorance
- Material degradation model from literature, not vessel-specific → flagged
- Continued service decision documented with explicit gap acknowledgment
Weld Procedure Qualification Review VALIDATION LEDGER
A fabrication shop qualifies a new welding procedure for API 5L pipeline. ARACHNE evaluates the qualification record against 36 nodes: WPS/PQR alignment, witness documentation, mechanical test results, and inspector certification status.
- Mechanical test results from lab with expired accreditation → flagged
- Witness documentation missing for 2 of 6 test coupons → ignorance
- Inspector certification verified against AWS registry, not assumed valid
- Procedure approval conditional on gap closure, not blanket
Not projected.
Proven.
Every number below is recomputable from public sources. No vendor claims. No confidential data. Just proofs you can run yourself.
"We had a safety factor of 2.5 on everything. That sounds conservative until you realize it was hiding the fact that we did not know the actual load distribution on half our structures. ARACHNE made us name what we did not know. That is harder than adding safety factors. It is also honest."