Product Analysis & Design Analysis

Use knowledge to determine a state Leads to single answer

Design Multiple answers possible Process includes:

Creativity Evaluation Decision – choices

Reproduction – recreating existing designs

Analysis & Design Analysis:

Given: Beam dimensions, allowable stress Determine: the maximum allowable load

Design: Given: Load to be carried, allowable stress Determine: Best possible shape

Reproduction Copy the beam from last year’s design

Analysis or Design? Find the best route between home and the airport. Find the cutting pattern that wastes the least

material in building a product. Find a way to prevent customers from burning

their hands on a paper cup full of hot coffee. Find a way to stack cans so the smallest box can

be used for shipping Find a way to mount a cellular phone in a car for

hands-free operation. Find a way to use GPS to automatically pilot a car.

Good Design Works all the time Meets technical

requirements Meets cost constraints Requires little or

no maintenance Is safe Creates no ethical dilemma

Bad Design vs. Good Design

Listens to new ideas Has all the answers Considers a variety

of solutions before picking a design approach.

Tunnel vision – pursues the first idea that comes to mind.

Project not complete at the first sign of success

Ships product without thorough testing.

Never content to design solely by trial and error

Thinks trial and error is engineering design

Says: I need to understand

why this works. Lets consider other

ideas.

Says: Why won’t this work?

Betty did it this way! Good enough!

Design Failure - TMIAs Designed:Better Design:

Reverse Engineering Start with an

engineered product Analyze the design

Function Materials Dimensions Features

Determine the original design problem

Decide if it can be improved