[PDF] Product Design & Development What methods can be used

View - Download Product Design & Development

Previous PDF

Next PDF

ETM 551 Lecture 5 -Concept

Generation.ppt1

Product Design & Development

Concept Generation

ETM 551 Lecture 5 -Concept

Generation.ppt2

Concept Generation Example:

Power Nailer

• What existing solution concepts, if any, could be successfully adapted for this application? • What new concepts might satisfy the established needs and specifications? • What methods can be used to facilitate the concept generation process?

ETM 551 Lecture 5 -Concept

Generation.ppt3

Concept Development

Process

Perform Economic Analysis

Benchmark Competitive Products

Build and Test Models and Prototypes

Identify

Customer

Needs

Establish

Target

Specifications

Generate

Product

Concepts

Select

Product

Concept(s)

Set Final

Specifications

Plan

Downstream

DevelopmentMission

Statement

Test

Product

Concept(s)Development

Plan 4

The Activity of Concept Generation

• A good concept is sometimes poorly implemented in subsequent development phases, but a poor concept can rarely be manipulated to achieve commercial success. • Concept generation typically consumes less than 5% budget and 15% of the development time • Because the concept genaration activity is not costly, there is no excuse for lack of diligence and care in executing asound concept generation method.

ETM 551 Lecture 5 -Concept

Generation.ppt5

Preliminary questions

After identifying customer needs and

establishing target product specifications, the team should ask: • What existing solutions could be adapted for this application? • What new concepts might satisfy these needs and specifications? • What methods can be used to facilitate concept generation process?

ETM 551 Lecture 5 -Concept

Generation.ppt6

Concept generation activity

• Structured approaches reduce the likelihood of costly problems - Common dysfunctions during concept generation: - Consideration of only one or two alternatives, often proposed by the most assertive members of the team. - Failure to consider carefully the usefulness of concepts employed by other firms in related and unrelated products. - Involvement of only one or two people in the process, resulting in lack of confidence and commitment by other team members. - Ineffective integration of promising partial solutions. - Failure to consider entire categories of solutions.

ETM 551 Lecture 5 -Concept

Generation.ppt7

A Five-Step Method

• Step 1: Clarify the Problem • Step 2: Search Externally • Step 3: Search Internally • Step 4: Explore Systematically • Step 5: Reflect on the Results and the

Process

8

Concept Generation

Process

1. Clarify the

problem • Understanding • Problem decomposition • Focus on critical subproblems

3. Search internally

• Individual • Group2. Search externally • Lead users • Experts • Patents • Literature • Benchmarking

4. Explore

systematically • Classification tree • Combination table

5. Reflect on solution

and process • Constructive feedback

SUBPROBLEMS

NEW

CONCEPTS

EXISTING

CONCEPTS

INTEGRATED

SOLUTIONS

ETM 551 Lecture 5 -Concept

Generation.ppt9

The nailer: Step 1

Review assumptions underlying mission

statement

The nailer will:

- use nails (as opposed to adhesives, screws etc.). - be compatible with nail magazines on existing tools. - nail into wood. - be hand-held.

ETM 551 Lecture 5 -Concept

Generation.ppt10

Customer needs

• Customer needs (for a hand-held nailer) - The nailer inserts nails in rapid succession. - The nailer works into tight spaces - The nailer is lightweight. - The nailer has no noticeable nailing delay after tripping tool.

ETM 551 Lecture 5 -Concept

Generation.ppt11

Target specifications

• No noticeable nailing delay after pulling trigger • Nail lengths from 25 to 38 mm. • Maximum nailing energy of 40 J/nail. • Nailing force of up to 2,000 N. • Peak nailing rate of 12 nails/second.

ETM 551 Lecture 5 -Concept

Generation.ppt12

Target specifications (cont)

• Average nailing rate of 4 nails/min. • Maximum trigger delay of 0.25 second. • Tool mass less than 4 kg • Maximum trigger delay of 0.25 sec.

ETM 551 Lecture 5 -Concept

Generation.ppt13

Problem decomposition

• Decompose complex problem into simpler sub-problems. Many design challenges are too complexto solve as a single problem. • Split a complex problem into simpler sub- problems.(Problem decomposition)

ETM 551 Lecture 5 -Concept

Generation.ppt14

Problem decomposition

• Split system into modules

Examples:

-document copier -paper clip • Many schemes - Functional decomposition

Possible submodules:

•Document handler •Paper feeder •Image capture device •Printing device •...More dificult to split, but still possible...

ETM 551 Lecture 5 -Concept

Generation.ppt15

Problem Decomposition:

Function Diagram

Store nailsStore or accept external energy

Isolate

nailConvert energy to translational energy Apply translational energy to nail Sense tripTrigger tool

Energy

Nails "Trip" of toolDriven nail

Hand-held

nailer

Energy (?)

Signal (?)

Material (nails)Energy (?)

Signal (tool "trip")INPUT OUTPUTMaterial (driven nail)

ETM 551 Lecture 5 -Concept

Generation.ppt16

Some useful tips to get started

• Create a function diagram of an existing product. • Create function diagram based on an arbitrary product concept already generated by the team or on a known subfunction technology. Be sure to generalize the diagram to the appropriate level of abstraction.

ETM 551 Lecture 5 -Concept

Generation.ppt17

Tips to get started

• Follow one of the flows (e.g., materials) and determine what operations are required.

The details of the other flows can be

derived by thinking about their connections to the initial flow.

ETM 551 Lecture 5 -Concept

Generation.ppt18

Two other approaches

• Decomposition by sequence of user actions. - Move tool to approximate nailing position, - Position tool precisely, - Pull trigger. • Decomposition by key customer needs - Fires nails in rapid succession, - Fits in tight places, - Has large nail capacity.

Products with very simple

technical functions involving a lot of user interactionsProducts in which form, andnot working principles or technology, is the primary problem

ETM 551 Lecture 5 -Concept

Generation.ppt19

Focus on critical sub-problems

• The aim of decomposition techniques is to split a complex problem into simpler sub- problems, then tackle each in a focused way.

ETM 551 Lecture 5 -Concept

Generation.ppt20

quotesdbs_dbs12.pdfusesText_18

[PDF] 5 steps in consumer decision making process

[PDF] 5 steps to a 5 ap computer science principles pdf

[PDF] 5 steps to a 5 ap computer science principles pdf free

[PDF] 5 steps to a 5: ap french language and culture pdf

[PDF] 5 tier architecture

[PDF] 5 to 1 mixing ratio

[PDF] 5 to 1 ratio per gallon

[PDF] 5 tons of refrigeration to kw

[PDF] 5 types of prewriting strategies

[PDF] 5 ways to avoid air pollution

[PDF] 5 ways to control air pollution

[PDF] 5 ways to keep the air clean

[PDF] 5 ways to reduce wastage of water

[PDF] 5 ways to reduce water

[PDF] 5 ways to reduce water consumption