All-Hands e-Manufacturing Workshop18 September 2006 Unobtrusive Capture of Engineering Knowledge Heather Rea Scottish Manufacturing Institute Heriot-Watt University Edinburgh

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 funded Innovative Manufacturing Research Centres ≈ £4 million over 5 years Portfolio funding Generate new technology and knowledge to help 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 Design Knowledge 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 Design Knowledge 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

18 September 2006All-Hands e-Manufacturing Workshop CHIVE Comparison of Immersive System with Desktop CAD Systems for Simple Harness Design Task CHIVE 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 DesignInfoSystem OpNavigateIntegrate

18 September 2006All-Hands e-Manufacturing Workshop Costar - Results 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 of encoded information into digital data so that the information is imperceptible, easy to read by authorised parties only, and difficult to remove without destroying the value and/or the original data.” (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