In partnership with

AFNeT Standards Days 2021 : 1 & 2 June 2021

Metrology associated to RV&V using STEP AP242 : the Promethea project

ByFrédéric Chambolle (Stellantis)/Alexandre Loire (GALIA)

Some facts§ Non-compliance is the major quality problem in the automotive industry§ Services development in the industrialization phase generates too many additional costs related to changes

=> Data handled are not sufficiently valued

Project objectives§ Put in place a digital supply chain integrating statistical methods at every design and manufacturing milestone, from

customer’s needs and operation defects collection, up to the measurement of the produced part/composant, with feedback to engineering=> To improve product/process benefits compliance convergence in development stage to series production § Phase 1 : Managing better compliance with a more seamless data exchange with suppliers§ Phase 2 : Using statistical/data science methods to design and measure at the strict optimum

Decision support to meet Quality, Cost, Deadline, Benefits of vehicle projects

PROMETHEA : A virtuous loop for the product Life Cycle

Robust Product/Process Design Approach (Example on a car door)

Providingcustomer C :

Doormaneuver

Measurable technicalspecification Yi :

Minimum colsing spdProduct influent parameters Xi : -door gasket gap-off-centering gate lock-joint compressibility …..

X1

Xi

Xi Specification

Y =f(Xi)

X1

Xi

IT on YX2

Xp

Negotiation according to feasibility

Y : Closing speed

X2

X1

X3 X4

X7

X5

X6

Y = a0 + a1*X1 + a2*X2 +…+ a7*X7 +/- U m/s

Y=f(X) Breakdown

Specification and dimensioning step

4

Y value monitoring Xi values monitoring

§ “Control Plan”: use of internal data and suppliers=> Drive parts compliance=> Management of service convergence=> Monitoring optimization

Qualification and monitoring step

Robust Product/Process Design Approach

PROMETHEA Phase 1

Context : example of a part used as the basis for the prototype Clearance Bonnet / Projector

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clearance fit

PROMETHEA Phase 1 – 3 steps

Definition of a standard data model leading to a data exchanges GALIA homologation

Data import interface standardisationDevelopment of the data model implementation guide based on STEP AP242 xml

Development of prototype exploiting measurements in production according to 3 use cases

Product/process feasibilityProduct/process convergence and process capability (ramp up)Quality monitoring (serial life)

Prototype industrialisation on car body partsStandard data model integration Tier1 1 and above deployment

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QUALITY Customers: ARCHITECT, Real time production Analysis, Quality leader…

In the event of a quality crisis, the objective is to automatically identify the non-conforming characteristics of the potentially incriminated parts

FAISABILITYRetrieve the information to size the design at the beginning of the project.

Customers: Manufacturer, Architect, Designer, Specialists, Geometre

MeasuresReal time productio

n

Results: Bonnets projects

PROJECT CONVERGENCE

Ensuring the correct convergence of requirements- preparation of "milestone" passages on a project in the industrialization phase..- Geometric analysis

Customers: Supplier, Design, Quality, Geometry leader, etc…

Compliance

Compliance management

Results:

Prototype operating measures in production according to 3 UC

PROMETHEA Phase 1

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Overview

Operating principle of the prototype based on KARREN (company DPS)

Links with RV&V Ø Participation to the workgroup to present our mechanical

perspective

Publications of PROMETHEA Phase 1 on www.galia.com

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White Paper Implementation Guide

PROMETHEA Conceptual Data model

STEP AP242 Business Object Model was selected as exchange format by taking into its capabilities (data model, XML encoding) in comparison with PROMETHEA needs.

PROMETHEA Data model

Each object ischaracteristizedby attributes

Physical measured part

Physical measured part

OEM & SupplierPart

Part

PartVersion

PartView

OEM & SupplierOrganization

Organization

OrganizationRelationship

Requirement type

RequirementView

RequirementVersion Requirement

Classification

RequirementAssignment

Requirements properties

PropertyValue

PropertyDefinition

Numerical value

IndividualPartView

IndividualPart

IndividualPartVersion

PartToIndividualPartAssociation

Measurement result

IndividualPartTestResult

Manufacturing dateMeasurement date

DateTimeAssignment

DateTimeString

Role=productionDescription = Measure

Role=productionDescription = Manufacturing

Declarationof characteristicsto be measured

PlannedCharacteristic

Measurement to be realized

Measured values

PropertyValue

PropertyDefinition

PropertyValue

Numerical value Numerical value

GALIA attribute valuesMES_OF, MES_Batch

PropertyValue

PropertyDefinition

PropertyValueAssignment

String value

1 IndividualPartTestResultper measurement

1 IndividualPartper measured part

OEMProject

Project

Role=project scope

ProjectAssignment

Frédéric CHAMBOLLE – Groupe PSA – February 2020

Activity

PROMETHEA exchange data model : STEP AP242 Ed. 1 subset

OrganizationOrPersonInOrganizationAssignment

Role=supplier/customer

Conclusion & Perspectives

Contribution to STEP AP 242 ed2 Quality Standard for the X-CEED project Ø Used in the blockchain for traceability of geometrical characteristics for conformity

Links with RV&V Ø PROMETHEA Model provides a link between 3D parts – requirements – physical partsØ Participation to the workgroup to present our mechanical perspectiveØ Interest to share our STEP AP 242 approach with Aerospace’s

ConclusionØ Demonstration that STEP AP 242 can be used in other domains : Big data, Blockchain, etc…Ø Breaks the walls between Design and ManufacturingØ Standard for Mechanical Industry?

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Questions &

Answers

1st and 2nd June