45 terms

Concurrent Engineering Design


Terms in this set (...)

Concurrent Engineer Design
Is a strategy where all the tasks involved in product development are done in parallel.
Ideation(Idea Creation)-Techniques and Purposes
•Perceptual mapping
•Reverse Engineering
•Problem Identification
•Preliminary Idea Generation
•Preliminary Design
Perceptual Mapping
•Compares customers perception of available products
•Identifies gap in market
•Get the best product available
•Base performance specifications for new product on it
Reverse Engineering
•Dismantle and inspect competitors product(s)
•Select features to incorporate into new product
Feasibilty Study (questions to ask)
Demand for the proposed product?
Cost of developing and producing the product?
Does company have manufacturing capability?
Skilled personnel?
Form Design
Physical appearance of the product
Functional Design
Performance of the product
Production Design
How to manufacture product
Pilot run and final test (Final Design and Process Plans)
•Prototype produced
•Adjustments made
•Final specification agreed
Product Launch
•Manufacturing process commences
•Product is marketed to buying public
To make decisions concurrently
•Team knows the design goals/objectives
•Team is aware of the interrelationships between all aspects of the design process
•Superior communication between all sections of the company
Why use Concurrent Engineering
•Pace of market change has increased
•Companies must keep pace with changing markets
•Decisions made sooner rather than later
•Reduces/eliminates repetition of tasks
•Reduces waste and reworking of design
•Product quicker to market
•Maximises company profit
•Company operates more efficiently
Concurrent Engineering Vs. Traditional Engineering
Concurrent Engineering everyone works together. Where as Traditional Engineering each section of the design process is giving to one person and once they complete there section only then can the next person begin working.
Product Lifecycle Management (PLM) (objective)
Give companies the ability to design and simulate products "virtually" across an integrated enterprise covering the entire life cycle of a product without ever having to build a real prototype.
Product Lifecycle Management (PLM)
PLM is a system that facilitates the simultaneous working of all departments (e.g. engineering, strategy, marketing and sales, procurement, and finance) involved in a new product's manufacturing.

PLM software allows creation, management, simulation, sharing, and communication about all aspects of the product and it's lifecycle.
Collaborative Engineering
•Evolved from concurrent engineering
•A true enterprise-wide integrated product development process.
•Collaborative engineering promotes collaboration between all parties involved to keep all focus on the product (product-centric). Less focus on the engineering process.
•Teams are cross-functional and empowered.
Computer Integrated Design and Manufacturing
Companies must deliver products to customers at theminimum possible cost, the best possible quality, and the minimum lead timestarting from the product conception stage to final delivery, service and disposal.
The core of computer technology includes:
Computer-Aided Design (CAD)
geometric modeling
Computer-Aided Manufacturing (CAM)
Computer Numeric Control (CNC)
Computer-Aided Engineering (CAE) Analysis
Finite Element Analysis (FEA)
Types of Design Projects
Modification of an Existing Design
Improvement of an Existing Design
Development of a New Product
Modification of an Existing Design
simple design changes. For example, there are modified versions of the same iPhone 5S to work only or optimally on a specific network such as the Verizon network, the T-Mobile network, the AT&T network, etc.
Improvement of an Existing Design
When customers want new or improved features.For example, the improvement of an iPhone 4 resulted in the iPhone 5S.
CPM (Critical path Method) Charts
Gantt and PERT
What are Gannt and PERT used for?
manage the tasks involved in big and complex projects
* let project managers organize time, people, equipment and money
* ensure the right people and equipment are in the right place at the right time
* allow managers to monitor the progress of a project
Gantt chart
provide an easy graphical representation of when activities (might) take place.
Gantt Chart limitations
*Do not clearly indicate details regarding the progress of activities
* Do not give a clear indication of interrelation ship between the separate activities
* was developed by the US Navy for the planning and control of the Polaris missile program and the emphasis was on completing the program in the shortest possible time
* was developed by Du Pont and the emphasis was on the trade-off between the cost of the project and its overall completion time
CPM and PERT(Advantages)
*Precedence relationships
*large projects
*more efficient
CPM and PERT (Limitations)
*Clearly defined, independent and stable activities
*Specified precedence relationships
*Over emphasis on critical paths
What Is The Critical Path?
It's the rate-limiting sequence of tasks. (Critical path is the Path that will take the longest time to complete)
meticulous notes
Very detailed notes
Why take meticulous notes?
*Easier to document original designs
*Important for applying for patents
*Easier to defend against lawsuits
*Easy way for company to track its history
is a repetitive process used to test the preliminary design, make changes if necessary, and determine if the design meets the goals of the project.
What are the three main elements of Refinement?
*Design Analysis
*Design Visualization
Technical Graphs
The drawings used by manufacturers to fabricate electronic and mechanical products and by construction professionals to produce architectural structures (houses and buildings) and civil engineering projects (roads, dams, bridges).
Types of modeling
Descriptive,Predictive, and Scale Models
Desrciptive Models
*presents abstract ideas, products, or processes in a recognizable form
Predictive Models
*can be used to understand and predict the behavior/performance of ideas, products, or processes
Scale Models
*a physical model created to represent system components, full size or made to scale of easily molded materials
* Real models created from clay used for spatial aesthetic, and property analyses.
Types of scale models
SLA (sterolithography apparatus)
SLS (selective laser sintering)
FDM (fused deposition modeling)
LOM (laminated object manufacturing)
* the third and final phase in concurrent engineering design and the process used to change the final design from an idea into a product
How many segements are there to Implementation?
What are the seven segements of Implementation?
Other Concurrent design methods include......
*Design For Manufacturability (DFM)
*Design For Assembly (DFA)
*Design For Serviceability (DFS)
*Design For Reliability (DFR)
*Design For Environment (DFE)