Circular RUL

Circular-RUL = Residual Useful Life Scoring + Digital Product Passports + Accreditation

At its core, Circular-RUL = Residual Useful Life Scoring + Digital Product Passports + Accreditation.
It is not a single tool, but a framework that combines three reinforcing pillars, turning condition data into trusted certification for reuse.

1. Health-Driven Certification

·       Every component receives a Residual Useful Life (RUL) score based on proven Condition-Based Maintenance (CBM) and Prognostics & Health Management (PHM) methods.

·       Techniques such as vibration analysis, degradation modeling (e.g., Weibull, Gamma processes), and AI-based predictions quantify how much safe life remains.

·       This replaces guesswork with measurable, scientific assessment of health.

·       The result: instead of “used” vs. “new,” we now have a graded spectrum of asset health, certified and reliable.

👉 just as a medical check-up provides a patient with a health score, Circular-RUL provides a component with a scientifically grounded RUL score

2. Digital Product Passport (DPP) Integration

·       The RUL score is not an isolated number; it is embedded into a Digital Product Passport.

·       The passport consolidates operational history, usage conditions, traceability, and warranty records into a single trusted document.

·       This creates transparency across the value chain — OEMs, operators, regulators, and second-life buyers all access the same verified information.

·       Like an actor’s résumé, the passport tells the story of every component: where it has been, how it has performed, and how much life it still has left.

  👉 Analogy: just as vehicles come with service books or certified mileage logs, Circular-RUL provides components with a transparent digital résumé repeat this visual of vehicle certified mileage

3. Accreditation & Warranty

·       RUL scoring and DPPs together provide the technical backbone for circular accreditation schemes.

·       Regulators, OEMs, and third parties can certify components for safe redeployment, ensuring reuse is trustworthy, standardized, and insurable.

·       This transforms second-life assets from “uncertain risk” into certified value, enabling new business models for leasing, resale, and extended warranties.

·       Trust shifts from subjective judgments to formal certification — just as airlines rely on certified pilots whose hours, health, and training are logged and verified.

 👉 Analogy: we do not gamble on whether a pilot can fly; we rely on their certified training, logged flight hours, and health checks. Circular-RUL offers the same assurance for reused components.

The Value of the Three Pillars Together

Individually, each pillar is powerful — but together they create a closed loop of measurement, transparency, and trust.

·       Health-driven scoring provides the data.

·       DPP integration provides the visibility.

·       Accreditation and warranty provide the confidence to act.

This is the trust architecture that allows circularity to move beyond recycling into true second-life redeployment.