Product Design and development

1. PRODUCT DESIGN AND
DEVELOPMENT
Prof.Dr.S.Kathirrvelu,
TPRIC,
EITEX, BDU.
1

2. PRODUCT
PRODUCT- any device or system that is designed and
produced for use by a customer
CUSTOMER-Person who ultimately buys the product
 Another person in your company who may use the device
you design
 Think broadly about who the customer is (who does the
product affect)
 Chief objective of product design - Satisfying the customer(s)
2

3. WHY STUDY THE DESIGN PROCESS?
 Continuous need for new, cost effective, high
quality products
 Today’s products are complex and require a team
of people with different backgrounds to take an idea
from concept to market
 ~85% of problems with new products not working
as intended, taking too long to bring to market, or
costing too much are the result of a poor design
process 3

4. MEASUREMENT OF THE DESIGN PROCESS
 Product Quality – How good is the product
 Product Cost – What is the manufacturing cost
 Development Time – How quickly was the product
developed
 Development Cost – How much was spent to
develop the product
 Development Capability – can the team be better
able to develop future products
4

5. 3 MEASURES OF DESIGN
Cost
Quality
Time
Duration may vary from 1 yr to 10yrs or greater
5

6. DESIGN AND DEVELOPMENT TEAM
 Marketing
 Design
 Mechanical
 Electrical
 Software
 Industrial
 Manufacturing
 Operations
 Warehouse
 Supply Chain
6

7. DEVELOPMENT AND DESIGN PROCESS
 Phase 0: Planning – Begins with the strategy and
assessment of technology developments and market
objectives
 Phase 1: Concept Development – Identify target market,
alternative product concepts generated and evaluated
 Phase 2: System-level Design – Definition of the
product and break-down into subsystems and
components
7

8. DEVELOPMENT AND DESIGN PROCESS
 Phase 3: Detail Design – Complete specification of
the geometry, material, tolerances and
manufacturing details
 Phase 4: Testing and refinement – Prototype
evaluation and assembly testing. Utilizes prototype
tooling
 Phase 5: Production Ramp-up – Completion of
production tools and process to implement
manufacturing process as well as train workforce
(work out the kinks)
8

9. DEVELOPMENT STEPS
 Step #1: Identify Need
 Two sources: the market (market-pull), or the development of a new technology
(technology push)
 Step#2: Plan for the Design Process
 Planning involves simply deciding on how to allocate the company’s resources of
people, money, time, and equipment to complete the design tasks.
 Step #3: Develop Engineering Specification
 Goal is to completely understand the problem
 Three steps:
 1)identify customers
 2) generate customer requirements
 3)develop engineering specifications
 Step #4: Develop Concepts
 Based on customer requirements and engineering specs.
 Multiple concepts may be evaluated by comparing the concepts generated to the
specifications developed. Goal is to select the best concepts for refinement into
products.
 Step #5: Develop Product
 Starting a project with a single conceptual design in mind, without concern for the
earlier phases, is poor design practice and leads to poor-quality products.
 As products are developed, the are evaluated for manufacture, assembly, behavior,
and cost.
9

10. DEVELOPMENT STEPS (CONT)
 During each stage of the design process, we must be able to
communicate the information to others (recall concurrent design).
Design Notebook
 Communication with management/customers (possibly during design
reviews)
 Make it understandable to the recipient.
 Carefully consider the order of presentation:
 Present the whole concept or assembly and explain its function
 Describe the major parts and how they relate to the whole and its function
 Tie the parts together into the whole
 Be prepared with quality material:
10

11.  Have good visual aids and written documentation
 Follow an agenda
 Be ready for questions beyond the material presented
 Documents communicating the final design
 Drawings (or computer data) of assemblies and details.
 Written documentation to guide manufacture, assembly,
inspection, installation, maintenance, retirement, and quality
control.
11