Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
HW#3
ME451
Due Date: 10/8/15
1. The general anisotropic elastic constitutive law can be written in the following matrix
form with respect the Cartesian coordinates x1 , x 2 , and x3 . Discuss the requirement
of elastic constants Cij for the following cond
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
HW6
A rough price estimate for the redesigned product
Redesigned product price = Original product price (changes in manufacturing cost)
Begin with the original product price, subtract:
1. Material cost for parts totally eliminated in redesign
Cost reducti
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Estimating Theoretical minimum number of parts
The reason we are estimating the theoretical minimum number of parts, NMIN, is to get a quick idea of how
bad the current design is for assembly even before we do any redesign. The degree of badness is the
De
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Material Properties for Snap Fit Design
Secant Modulus Charts
1. polycarbonate PC
2. PC/ABS blend
3. PBT Polyester
4. Polyamide
5. PET Polyester
6. PC Blend
Design Strain
Coefficient of Friction
Secant Modulus as a function of Strain
Secant Modulus as a f
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Design for Manufacturability
University of Michigan
Design for Assembly2
Summary
Example Assembly AnalysisWood working plane
Inclass exercise
Summary for Design for Assembly
Combine
with
another
part
Essential
part
Design for Manufacturability
Universi
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Design for Manufacturability
Robust Design2
University of Michigan
Prof Donald Malen
Taguchi Methods
Parameter optimization inner outer array experiments
Robust Design2
Donald E Malen, dmalen@umich.edu
1
Parameter design: Adjusting control factor levels
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Design for Manufacturability
Session 18
Introduction to Design of Experiments
Short inclass exercise  DOE in product design
Design of Experiments in Product Design
Donald E Malen, dmalen@umich.edu
1
Experimentation
in the Embodiment Stage
Design for Man
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Design for Manufacturability
Robust Design1
University of Michigan
Prof Donald Malen
Quality and Robustnessdefinition
Strategies to achieve a robust product
Taguchi Methods
a. Qualitydefinition
b. Loss function
c. Parameter optimization
Inner outer
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
MANUAI HANDLINGESTIMATED TIMES (seconds)
parts an insv to grasp and manipulate parts present handling difficulties :1)
thickness > 2 mm thickness 5 2 mm thickness > 2 mm M
sm me sin sire use me
>15rnrn (bihm >6rnm >15mm (omm >6mm
n 1lnun
n mummmmm
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Design for Manufacturability
Family of Products
Product Architecture
University of Michigan
Prof Donald E Malen
Product Architecture
Donald E Malen, dmalen@umich.edu
1
Two groups of coffeemaker customers (market segments)
College student
coffee drinker
L
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Design for Manufacturability
Session 8
Material Selection Part 1
Material Selection 1
Donald Malen, dmalen@umich.edu
1
Stages of product design
1 Product
planning
Customer needs
and
constraints
Minimize
market
risk
Engineering requirements and constraints
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Design for Manufacturability
Session 6
Conceptual Design
Conceptual Design
Donald E Malen, dmalen@umich.edu
1
Concept Design Phase
1 Product
planning
Customer needs
and
constraints
engineering requirements
to create many design alternatives
2 Conceptual
d
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
HW#2
ME451
Due Date: 10/1/15
E
for isotropic materials. Also, circular or square cross sections for
2(1 )
fibers can be assumed to obtain ET )
1. 3.6 ( G
2. 3.7(a) (the loading direction of the rod is in the longitudinal direction of the composite)
3. 3.
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
HW #10
ME451
Due Date: 12/3/15
1. Consider a sandwich laminate that contains two steel face sheets and one epoxy foam
core as shown in the figure. The steel sheet has a thickness of 1 mm and the epoxy
foam core has a thickness of 6 mm. The elastic propert
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
TRIZ
40 Inventive Principles
with examples
Principle 1. Segmentation
A Divide an object into independent parts.
Replace mainframe computer by personal computers.
Replace a large truck by a truck and trailer.
Use a work breakdown structure for a large proj
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Design for Manufacturability
Session 2
Product as a system
System design process
Containing System Map
A tool for requirements development
Session 2Product as a System
Donald E Malen, dmalen@umich.edu
1
Design for Manufacturability
Assumption: The object
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Professor Russell Ackoff
University of Pennsylvania
19192009
Systems
thinking
Design for Manufacturability
Donald Malen, dmalen@umich.edu
9/10/2016
1
What's a system?
A System is a set of two or more elements that
satisfies three conditions
Design for Ma
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Design for Manufacturability
Session 3
Development of Design Requirements
1
Successful Product Systems
2
Design Process
3
Definition: System
4
Identifying System Functions
5
Sorting Functions
6
Setting Function Requirements
Session 3Product Requirements
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Design for Manufacturability
University of Michigan
Session 5
Psychology of Product Design
Psychology of Product Design
Donald E Malen, dmalen@umich.edu
1
Function diagram
Function diagram
Inputs
energy
energy
material
material
signal
Output
signal
Output
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
9/3/2016
Design for Manufacturability
ME/MFG 452
MFG599
Donald Malen
dmalen@umich.edu
Adjunct Research Scientist
Course Objectives
To study systematic methods in product design which will
improve quality and cost
To implement the methods to redesign an ex
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Design for Manufacturability
Session 4
Requirements, Function Diagram
Session 4 Requirements, QFD, Function Analysis
Donald E Malen, dmalen@umich.edu
1
Development of Design Requirements
1 Successful Product Systems
2 System Design Process
3 Definition:
Properties of Advanced Materials for Design Engineers
MECHENG 451

Fall 2015
Taguchi Optimization in the Design of a Printer
Registration System
Journal of Engineering Design
Author: Doug K. Herrmann
D. K. Herrmann
Page 1
Bio
Mechanical Engineer (Registration Media Handling)
Xerox Corp, Webster, NY
Education (Degree/College):