Steps of System Life Cycle for a RAMS Management Process 1-5
- Concept
- System definition and operational conditions
- Risk analysis and evaluation
- Specification of system requirements
- Architecture and apportionment of system requirements
Steps of System Life Cycle for a RAMS Management Process 6-12
- Design and implementations
- Manufacture
- Installation and integration
- System validation
- Trial run and system acceptance
- Operation, maintenance and performance monitoring
- Decommissioning and disposal
What is design?
Design is sketch or plan for future product; scheme or shapes forming decoration
What is a process
Series of actions or steps toward achieving a particular end
Which phases can be considered as design activities?
1 to 5
Main Flows
Energy -> Machine
Material -> Apparatus
Signal -> Device
General Process of Engineering Design (VDI 2221)
WHAT?
- Clarify and define the task
- Determine functions and their structure
HOW?
- Search for solution principles and their combinations
- Divide into realizable modules
GO!
- Develop layout of key modules
- Complete overall layout
- Prepare proaction and operating instructions
-> Further realisation
Elements of Technical Specification
2 Elements:
- Purpose Description
- Requirement List
A technical specification must be
- unambiguous: no room for interpretation
- clear: easy to understand
- complete: containing all information relevant for realizing a precut that
behaves as expected
What does engineering design imply?
- Applied natural sciences (objectivity)
- Business venture (monetary profit)
- Problem solving (purpose orientation)
Method and Methodology
Method: Systematic proceeding aimed at reaching a certain target
Methodology: Systematic proceeding comprising several methods and aids aimed at reaching a certain target
General Process of Problem Solving
- Task (Problem)
- Confrontation
- Information
- Definition
- Creation
- Evaluation
- Decision
- Solution
Purpose-Definition
Processing of energy, material or signal flow (diagramm with input output)
Sources of Requirements
- Client
- External environment
- Internal environment
- Policy
Checklist for the identification of technical requirements
- Geometry
- Kinematics
- Forces
- Energy
- Material
- Signals
- Safety
- Ergonomics
- Production
- Quality Control
- Assembly
- Transport
- Operation
- Maintenace
- Recycling
- Costs
- Schedules
Design Engineers are…
problem solvers!
2 Types of design knowledge
- Methods and tools
- Design rules
Purpose of Design Theory
- Organise the wealth and knowledge
- Support effective education and research
- Increase product quality and efficiency of development process
Design as a production-roiented process
- Experience Design
- Interface Design
- Design Engineering
- Production
Types of requirements
- Techn.- economics requirements
- Organizational requirements
Organizational requirements
- Time
- Staff
- Tools
Techn.- economics requirements
- Purely technical requirements
- Interfaces
- Cost
- Laws, standards, patents, guarantees
