3. INTRODUCTION
Concurrent engineering is a production strategy which replaces the
traditional product development process with one in which tasks are
done in parallel and there is an early consideration for every aspect of
a product's development process. This strategy focuses on the
optimization and distribution of a firm's resources in the design and
development process to ensure effective and efficient product
development process.
Concurrent engineering is a systematic approach to the integrated,
concurrent design of products and their related processes, including
manufacture and support. This approach is intended to cause the
developers from the outset, to consider all elements of the product life
cycle from conception to disposal, including quality, cost, schedule,
and user requirements.
4. Need for Concurrent Engineering
• React to the changing market needs rapidly, effectively, and
responsively.
• To reduce their time to market and adapt to the changing
environments.
• Decisions must be made quickly and they must be done right the first
time out.
• Concurrent engineering is a process that must be reviewed and
adjusted for continuous improvements of engineering and business
operations.
5. • Increasing global competitive pressure that results from the emerging
concept of reengineering.
• The need for rapid response to fast-changing consumer demand.
• The need for shorter product life cycle.
• Large organizations with several departments working on developing
numerous products at the same time.
• New and innovative technologies emerging at a very high rate, thus
causing the new product to be technological obsolete within a short
period.
6. Schemes for Concurrent Enginering
Concurrent Engineering is the application of a mixture of all following
techniques to evaluate the total life-cycle cost and quality.
1. Axiomatic design
2. Design for manufacturing guidelines
3. Design science
4. Design for assembly
5. The Taguchi method for robust design
6. Manufacturing process design rules
7. Computer-aided DFM
8. Group technology
9. Failure-mode and effects analysis
10. Value engineering
11. Quality function deployment
7. The Concurrent Engineering Approach
Concurrent engineering mandates major changes within the
organizations and firms that use it, due to the people and process
integration requirements. Collaboration is a must for individuals, groups,
departments, and separate organizations within the firm. Therefore, it
cannot be applied at leisure. A firm must be dedicated to the long term
implementation, appraisal, and continuous revisi on of a concurrent
engineering process.
9. Basic Principles of Concurrent Engineering
1. Get a strong commitment to from senior management.
2. Establish unified project goals and a clear business mission.
3. Develop a detailed plan early in the process.
4. Continually review your progress and revise your plan.
5. Develop project leaders that have an overall vision of the project and goals.
6. Analyze your market and know your customers.
7. Suppress individualism and foster a team concept.
8. Establish and cultivate cross-functional integration and collaboration.
9.Transfer technology between individuals and departments.
10.Break project into its natural phases.
11.Develop metrics.
12.Set milestones throughout the development process.
13.Collectively work on all parts of project.
14.Reduce costs and time to market.
15.Complete tasks in parallel.
10. Difference Between of Traditional Engineering Process And
Concurrent Engineering Process
Traditional Engineering Process
Concept
Product
Design
Model
Evaluation
Process
Design
Process
Evaluation
Tool Design
Tool
Construction
Controller
Release
13. Concurrent Engineering Manufacture Process
Manufacture
Products
System Component
Order
Material Components
Product
Society Market Company strategy police
Skill Energy Capital
14. Role of Rapid Prototyping and Manufacturing in Concurrent
Engineering
The stages of analysis, verification, design evaluation and review associated with
product design may be undertaken using computing equipment and by building
prototypes for experimental testing. Rapid prototyping and manufacturing (RP & M) is
an effective tool that allows the concurrent engineering design team to undertake
engineering analyses and verification within the product and process cycle, shortening
the time-to-market cycle. Specifically RP & M offer the concurrent engineering team
the following advantages:
1. Visualization: By allowing the team to look at a physical part, they are assured of the
presence of desired design features and accuracy of the design without the complexity
and (occasional) uncertainty accompanying CAD images and their interpretation.
2.Iteration: The time and cost reductions of RP & M as compared to the methods used
in conventional prototype builds allows design teams to go through multiple design
iterations in a reduced amount of time
15. 3.Verification: Design teams often have to compromise on the quality of a part when the
pressures of time do not permit full analyses or design improvement. R& M enhances
the quality of the design by allowing the team to verify that the design contains the
features that are desired, and conversely does not contain any features that are not
desired. This allows the team to spend the freed up time on functional testing. In
addition, RP techniques which employ a photo-resin (like SLA) result in prototypes that
are “photoelastic”, that is, they can be placed in the presence of polarized light and,
under loading conditions, seen in service, stress analysis can be conducted to locate
stress concentrations within the part.
4. Optimization: The usage of RP & M allows design teams to play the “What if” game
in design optimization after having achieved an acceptable design without excessive
expenditure and time invested in the venture.
5. Fabrication: RP & M can be used to extend the role played by the prototype and take
it into the realm of functional testing by using the prototype to generate tooling using
techniques such as silicon room temperature vulcanizing (RTV) molding, investment
casting, and sandcasting of aluminum and ferrous metals. The tooling is derived directly
from the prototype, giving rise to the term rapid tooling
19. Advantages
1) Improving the quality of designs which resulted in a drastic reduction
of engineering change orders (over 50%) in early production.
2) Reduced cycle time of product development , so a 40-60% through
concurrent design, rather than a product design and sequential process.
3) Manufacturing costs reduced by up to 30-40% by having MFPs that
integrate product and process design.
4) Scrap and rework reduced by up to 75% through the products and
process design optimization.
5) Maintenance / serviceability efforts and reduced warranty costs (ie,
lifecycle cost savings) .
6)Emphasis on Problem resolution not in conflict resolution
20. Disadvantages
Strong Customer Relationships.
Success in the software development depends on how disciplined the
team members are and how advance their technical skills
In this development model great flexibility is given to developer which
is surely great but too much of it will quickly lead to a development
team who lost focus on its original objects thus, itheart the flow of
entire project development work
21. Conclusion
1.The term Concurrent Engineering has stimulated an industrial development
towards shorter lead times, lower cost and better customer satisfaction.
Leadership, development of team work and education have been important
factors. Elimination of slacks and integration of product and process
development have been the main reasons to success.
2.To further improve Concurrent Engineering systematic principles of design of
products, processes and manufacturing systems have to be further developed.
3.Computerized tools for integration engineering can be developed. To be able
to do that in a consistent way, basic system theories have to be defined and
developed. Reasoning systems also capable of improving analogous
reasoning, neural networks and fuzzy logic can constitute possible principles to
build up powerful systems.
4.Principles for team work with computer aid needs also further development.
Understanding for cognitive and psychosocial conditions must be developed.
