- The document compares sequential and concurrent engineering processes. - In sequential engineering, design, process planning, and manufacturing phases are carried out sequentially, which can lead to wasted time and materials if changes are needed late in the process. - Concurrent engineering involves simultaneous or overlapping work by cross-functional teams, allowing for faster design changes and reducing development time.

1. Sequential engineering
• Three major phases of conventional manufacturing (mfg) process are
design, process planning and manufacturing.
• All these phase are sequential carried out.
• Design – specifications, requirements and methods of manufacturing
are decided.
• Process planning – mfg instructions are given on the basis of method
of mfg.
• Mfg – these instructions are interpreted and production works are
carried out.

2. • All these phases are used to develop the product such as quality,
testing and marketing.
• In this fig each phases interactivities between them.
• Moreover, if you any change the design product, depends on the
customer feedback.
• If you found serious mistake during the final stage, the process is
start from design phase. Therefore the material wastage and loss of
time.

4. Concurrent engineering
• Conventional mfg method – both design and mfg are separated.
• Because the quality may be lost and design modifications cannot be
possible at the last stage of production.
• During a concurrent engineering production cycle – several teams
work on different parts of the design at the simultaneous.
• Simultaneous engineering.
• This technique used to grow the efficiency of product design and
reduce the product development cycle time.

5. • This procedure used to, where it possible convert the sequential
workflow into concurrent workflow.
Advantages
• We can faster product design changes and modifications.
• It has shorter lead time because all activities are related to product
design and development is simultaneously.
• It ensures better quality.

7. Comparison between sequential and concurrent
engineering

8. Following parameters,
• Product development cost
• Number of design changes
• Lead time for product development
• Customer satisfaction
• Coordination between departments

9. Product development cost
• Large number of mistake is detected in the later stages of product
development cycle, so only we needed large time and high cost.
• All decisions taken during the design stage, so only we don't need
large time and high cost.
Number of design changes
• The no modifications/changes are modified in the product
development cycle.
• The no modifications/changes are modified beginning of the product
development cycle.

10. Lead time for product development
• Process are carried out one by one, so the lead time increases.
• Process are carried out simultaneously, so the lead time reduces.
Customer satisfaction
• The entire product developments are satisfied such as product cost,
specifications, aesthetics, performances and maintainability. The
resulting product will naturally satisfy the customer
Coordination between departments
• It is a better communication and coordination among various
departments. So, we got it good results.