Lab compliance: PDF extraction and normative thresholds
A document pipeline that extracts chemical values from lab reports, applies ASTM/EN rules and accelerates the line decision.
−95 %
manual checks on the targeted reports
−47 %
lab → line decision lead time
ASTM/EN
thresholds applied automatically
Context
The problem
Unstructured lab PDFs
Supplier and internal reports in variable formats: manual extraction of chemical and mechanical values.
Inconsistent reject decisions
Interpretation of ASTM/EN thresholds depends on the shift technician: risk of inconsistent acceptance or rejection.
Bottleneck on material release
The line waits for lab validation: every hour of manual parsing is an hour of production blocked or run just-in-time.
No structured archive
Extracted values are not systematically historized for supplier trend analysis.
Solution
Deployed architecture
Multi-layout Document AI
OCR + adaptive parsing on the most frequent lab PDF templates: progressive extension to new formats.
ASTM/EN compliance engine
Automatic application of normative thresholds by grade and by application. Explicit conforming / non-conforming decision.
Targeted human-review queue
Only ambiguous or off-template cases go to the technician: with fields pre-filled.
Structured supplier database
Extracted values stored for trend analysis and material audit.
Results
Measured results
Measured in production conditions on the deployed scope.
−95 %
Manual checks
On the report types covered by the pipeline in production.
−47 %
Lab → line lead time
Time between report receipt and material-release decision.
100 %
Threshold application
Every value passed through the rules engine: no more missed threshold on the night shift.
Audit
Decision traceability
Source PDF, extracted values and applied rule retained per material batch.
Lessons learned
What we took away
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