All-Hands e-Manufacturing Workshop18 September 2006 Unobtrusive Capture of Engineering Knowledge...
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Transcript of All-Hands e-Manufacturing Workshop18 September 2006 Unobtrusive Capture of Engineering Knowledge...
All-Hands e-Manufacturing Workshop 18 September 2006
Unobtrusive Capture of Engineering Knowledge
Heather ReaScottish Manufacturing InstituteHeriot-Watt UniversityEdinburgh
18 September 2006All-Hands e-Manufacturing Workshop
Outline
• Scottish Manufacturing Institute
• Digital Tools Group Research
• Current e-Work
• Knowledge Capture
18 September 2006All-Hands e-Manufacturing Workshop
Outline
• Scottish Manufacturing Institute
• Digital Tools Group Research
• Current e-Work
• Knowledge Capture
18 September 2006All-Hands e-Manufacturing Workshop
Scottish Manufacturing Institute
• One of fourteen EPSRC fundedInnovative Manufacturing Research Centres
• ≈ £4 million over 5 years
• Portfolio funding
• Generate new technology and knowledge tohelp support UK manufacturing
18 September 2006All-Hands e-Manufacturing Workshop
SMI Research Themes
• Digital Tools
• Digital Technologies for Engineering Design• Management of Digital Information
• Photonics
• Lasers• Laser Manufacturing Processes
• Micro Systems
• Make Very Small Things• Scale Down Processes – Lab-on-a-chip
18 September 2006All-Hands e-Manufacturing Workshop
Outline
• Scottish Manufacturing Institute
• Digital Tools Group Research
• Current e-Work
• Knowledge Capture
18 September 2006All-Hands e-Manufacturing Workshop
Digital Tools Themes
Four interconnected themes:
• Technology Assessment
• Interface Design
• Design (user) Behaviour
• Design & Manufacturing Data
18 September 2006All-Hands e-Manufacturing Workshop
Digital Tools Objectives
• new technologies impact and the design process• human computer interfaces of design systems• more effective access to relevant data
• improve work flow and project management
• improve design output quality and improve
through-life-management of the design data
• increase competitiveness
18 September 2006All-Hands e-Manufacturing Workshop
Digital Tools Projects
• Immersive Design & 3D Interaction
• Rapid Prototyping Technologies
• Shape Search - 3D Search Engine
• Surface Texture - Capture & Modelling
• Putting Images on 3D Surfaces
• Heterogeneous Materials
• Haptic Interfaces in Design & Manufacture
• Digital Watermarking
• Capture and Management of DesignKnowledge and Intent
18 September 2006All-Hands e-Manufacturing Workshop
Outline
• Scottish Manufacturing Institute
• Digital Tools Group Research
• Current e-Work
18 September 2006All-Hands e-Manufacturing Workshop
Digital Tools Projects
• Immersive Design & 3D Interaction
• Rapid Prototyping Technologies
• Shape Search - 3D Search Engine
• Surface Texture - Capture & Modelling
• Putting Images on 3D Surfaces
• Heterogeneous Materials
• Haptic Interfaces in Design & Manufacture
• Digital Watermarking
• Capture and Management of DesignKnowledge and Intent
18 September 2006All-Hands e-Manufacturing Workshop
Shape Search
• Searching for shapes based on geometry
• Allow reuse of tooling, CAD data, process knowledge
• Finding duplicate parts
18 September 2006All-Hands e-Manufacturing Workshop
Shape Search
18 September 2006All-Hands e-Manufacturing Workshop
Immersive Design & 3D Interaction
• Develop Useful & Usable 3D Design Systems
Using Advanced Visualisation Technology
• Improve Design Process
• Measure Design Performance
18 September 2006All-Hands e-Manufacturing Workshop
Assembly Planning & Knowledge Elicitation
Tie Bar
Lower
Guide
Left
Frame
Right
Frame
Left Frame
Right Frame
Tie Bar
Lower Guide
Upper Guide Tie Bar Tie BarTie Bar
Upper Guide
Upper Guide
Lower Guide
Lower Guide
18 September 2006All-Hands e-Manufacturing Workshop
CHIVE
Comparison of Immersive System with Desktop CAD Systems for Simple Harness Design TaskCHIVE task times 2 – 4x faster than Desktop CAD
18 September 2006All-Hands e-Manufacturing Workshop
COSTAR
• 3D Interface Design • Technology Assessment • Analysis of User Design Activity• 10 Participants (9 HWU & 1 Industry)• 3 Design Tasks• Questionnaire, Interview and Performance Data
18 September 2006All-Hands e-Manufacturing Workshop
COSTAR
Add Cable 1
Delete Cable 2
Fix Cable Error
Save Model & Export Documentation
Exit System
Purpose of User Activity
Design Info System Op Navigate Integrate
18 September 2006All-Hands e-Manufacturing Workshop
Process Integration5s, 0%
Navigation509s, 41%
System Operation293s, 23%
Information106s, 9%
Design343s, 27%
Costar - Results
Navigation1s, 1%
System Operation70s, 79%
Information2s, 2%
Design Support5s, 6%
Design Goal11s, 12%
Main Activity Distributed by Time
Unproductive Activity
18 September 2006All-Hands e-Manufacturing Workshop
COSTAR 2
• New Simplified Interface• Navigation Aids• Curve fitting• Conduit & Piping Design
18 September 2006All-Hands e-Manufacturing Workshop
Haptic Interfaces in Design & Machining
applying tactile sensation to computer interactions
18 September 2006All-Hands e-Manufacturing Workshop
Haptic Interfaces in Design & Machining
• Using haptic feedback and 3D stereo-rendering to
create novel application interfaces to a range of
macro/micro manufacturing and assembly tasks
• The study of human factors for evaluation of both user
functionality and cognitive measures. This approach
will enable the quantitative assessment of each applied
technology and its associated interface.
18 September 2006All-Hands e-Manufacturing Workshop
Haptic Interfaces in Design & Machining
Design for assembly (DFA) methodologies have quantified the relative times of real-world assembly tasks:
• Grasping• Acquisition• Manipulation• Insertion
Could Haptic assembly performance benchmarked against previously quantified data?
18 September 2006All-Hands e-Manufacturing Workshop
Hypothesis
Collision detection affects total completion time (TCT) and error rates.
Stereoscopic glasses affect TCT and error rates.
Chamfers affect TCT and error rates.
18 September 2006All-Hands e-Manufacturing Workshop
Results
18 September 2006All-Hands e-Manufacturing Workshop
Capture and Management of Design Knowledge and Intent
EPSRC Grand Challenge
‘Immortal Information and Through-life Knowledge
Management (IITKM): Strategies and Tools for the Emerging
Product-service Paradigm’
18 September 2006All-Hands e-Manufacturing Workshop
Digital Watermarking
“Digital Watermarking is embedding or hiding ofencoded information into digital data so that theinformation is imperceptible, easy to read by authorised parties only, and difficult to remove without destroying the value and/or the originaldata.” (Matheson et al., 1998)
18 September 2006All-Hands e-Manufacturing Workshop
Digital Watermarking
It can be used to:
• identify the source, owner, creator,
distributor, …
• notify about copyright policy
• track lost data
• monitor the distribution of data
• prevent theft
• restrict or regulate access to the original data
• identify the original data
18 September 2006All-Hands e-Manufacturing Workshop
Digital Watermarking
Project aim:• develop a geometry based digital watermarking system for 3D CAD
models to secure the provenance of commercial 3D design data.
Methodology:State of the art review• Current digital rights management (DRM) technologies for electrical
data types (e.g. music, images, text, film)
• suitable watermarking algorithms and technologies
• CAD product data formats, assessing effects of translation,
modification, copying, etc.
Questionnaires and interviews to establish industrial concerns and
requirements
Design and develop watermarking system in C++
Assessment, testing and implementation of the digital
watermarking system.
18 September 2006All-Hands e-Manufacturing Workshop
Capture and Management of Design Knowledge and Intent
Objective - to explore the potential for (semi) automated techniques for the capture of design knowledge to reduce overhead in building models. Development of operator logging methods
for CAD, VR and other designer activity Development of methods for inferring
design activity and for model instantiation
18 September 2006All-Hands e-Manufacturing Workshop
Capture and Management of Design Knowledge and Intent
• Identify suitable design environment for
consideration• Develop methods of capturing and logging
user interactions with the design
environment• Identify variables and design experiments
to infer design activity• Develop methods for inferring design
activity and for model instantiation.
18 September 2006All-Hands e-Manufacturing Workshop
Outline
• Scottish Manufacturing Institute
• Digital Tools Group Research
• Current e-Work
• Knowledge Capture
18 September 2006All-Hands e-Manufacturing Workshop
Unobtrusive Capture of Engineering Knowledge
• Working in with digital tools • easy to capture user activities
• Capturing data• Reduce overheads• Accurate data• Manage knowledge
• Monitoring behaviour• Information push