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Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton
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Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Mar 27, 2015

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Page 1: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Supporting Complex Design using AKT technology:

Rolls-Royce Case Studies

Derek Sleeman: AberdeenDavid Fowler: Aberdeen

Gary Wills: Southampton

Page 2: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

I: Designers’ Workbench Aims

To assist designers by checking designs Easy to overlook simple rules Designer focuses on more important

issues

To record reasons for decisions/rules New designers learn why rules are used Experienced designers may realise that a

rule is obsolete

Page 3: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

I: Designers’ Workbench Aims

AKT Challenges/Technologies addressed

Ontologies used to structure Domain knowledge & design features

Use/Reuse of Knowledge (largely Constraints)

Constraint-based problem solving

Page 4: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

The Designers’ Workbench

Page 5: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Designers’ WorkbenchKnowledge Elicitation of Constraints & Rationales From various RR documents (eg JDSs) by

Engineers & Knowledge Engineers

Stores information about design Features, properties “Features” includes: assemblies, subassemblies,

materials, dimensions, etc (hierarchical)

Checks constraints on design Reports the rationale for constraints

Multi-user system

Page 6: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Technologies employed

Ontological description and processing of designs DAML+OIL OilEd Jena (DAML to Java data-structures)

Constraint satisfaction methods Sicstus Prolog

Page 7: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Current focus: IPCRSS*

*Intermediate Pressure Compressor Rear Stubshaft

Page 8: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Designers’ Workbench: Demos

User annotating a design with featuresdemo1

Checking (external) constraintsChecking rationalesdemo2

Page 9: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

II: Intelligent Document Retrieval,High Integrity Joints (Flange)

A flange is a cylinder or collar to join two parts togetherFunctions Holds engine parts together, can

form seals, Load transfer, holds in debris in catastrophic failure, etc

Different points of view Whole engine, Heat transfer,

Cost model, Manufacturing, Assembling/Maintenance

Page 10: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Intelligent Document Retrieval: Discussions

High Integrity Joint Integrated Programme Team Documentation of aspects of the design

process Federated Representation (Multi-perspective

Representation)

Intelligent document retrieval system for existing designs & associated supporting documents

Page 11: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Intelligent Document Retrieval

AKT Challenges/Technologies addressed

Annotation of Ontologies (with Documents)

Ontologies used to support Multi-perspective Retrieval of Documents

Page 12: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Intelligent Document Retrieval: Document Database

RR supplied: Over 175,000 document summaries and

associated keywords Over 4,200 document types Over 20,000 key words - reduced to 9,000

However, documents provided did not include all the document types currently in use with these design teams.

Page 13: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Intelligent Document Retrieval: InterviewsAnalysis of Card sort: gave documents types & relationships

Page 14: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Intelligent Document Retrieval: Interviews

Interviews gave the functions/concepts and associated keywords

----------------Non-dimensional numbers-----------------------ReynoldsConvection/Radiation ratioStanton numberGrashofRayleighNusselt------- Rotating Components----free discRotating enthalpyRothalpyVortexWindage

Page 15: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Intelligent Document Retrieval: Interviews

Summary Card sort gave documents types and relationships Interviews gave the functions/concepts and

associated keywords Checklist (already developed by the Turbines

group) gave additional keywords for Design and Stress analysis

Simon Kampa developed the demo based on COHSE (Ontological Hypertext system)

Page 16: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Intelligent Document Retrieval: Demo

The 9,000 key words are presented alphabetically. Users can view document meta-data: The resulting list of documents can be ordered

according to job function. Users can opt to view the meta-data for a

particular document For demo purposes only the first 300

documents are shown Click here to see video

Page 17: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Intelligent Document Retrieval: Demo

Job function determines concepts & related documents selected The resulting list of document is ordered

according to : the current task (eg Original requirements ) Documents are ordered depending on the job

function (eg designer, thermal analyst, etc) the related concepts (identified by keywords). Additionally, peer recommended documents

are listed Video

Page 18: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Intelligent Document Retrieval: Demo

Sometimes too many documents are returned.So the engineer can look at just one series of documents. Video shows the engineer choosing a DDR.

Note DDR currently means Design Definition Report; earlier Design Department Report, OR Design Dept Report OR Design Department Reports all are in the database as DDRs

Page 19: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Planned Future Research

Apply Information Extraction techniques to documents (AKT, Sheffield).Implement Intelligent Editors to support document writing & extract key issues.Designers’ Workbench: use background knowledge to produce generalized constraints /rationales. (Enhance underlying Constraint Satisfaction Engine.)

Page 20: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Possible Future R & D

Develop CBR systems based on earlier designs.Integrate the 2 AKT demo systems with new KBE & CADS systems to be acquired by RR.

Page 21: Supporting Complex Design using AKT technology: Rolls-Royce Case Studies Derek Sleeman: Aberdeen David Fowler: Aberdeen Gary Wills: Southampton.

Supporting Complex Design using AKT technology

QUESTIONS / COMMENTS