Reverse Engineering Flashcards
What is design
A subset of the technical activities within the product development process
Name three major subsections of product development
- Marketing and business case
- Design process
- Manufacturing process
Define an original design
Involves elaborating original solutions for a given task
- they disrupt the market
- replace old equipment and the infrastructure around it
- often high risks involved
Define an adaptive design
Involves adapting a known system to a changed task
- can be novel but doesn’t require significant restructuring of the system within which the product operates
- reflection of the marketplace
- reasonable risk
Define variant design
Involves varying the parameters (size, geometry, material properties) of a product to develop a new or more robust design
Define redesign
Implies product already exists which falls short of some criteria - new solution required
For this new solution we can use any design approach e.g. original, adaptive etc.
Technology innovations typically manifest themselves into a market along what kind of curve
S - curve
What drives redesign
profit
What is reverse engineering
The prediction of what a product should do followed by modelling, analysis, dissection and experimentation of its actual performance
What follows reverse engineering
Redesign
First task of reverse engineering
Understand the market for current product - done by doing a customer needs analysis
Second task of reverse engineering
Make estimates of how product ought to function - dissect product, understand how it satisfies/doesn’t satisfy the customers
Customer needs: explain these terms - direct needs - latent needs - constant needs - variable needs - general needs
direct needs:
well defined that customers declare
latent needs:
customers will not express without probing
constant needs:
intrinsic to the task and always will be
variable needs:
difficult to define but important
general needs:
apply to every person in customer population
List ways of gathering customer needs
- interviews
- questionnaires
- focus groups
- be the customer yourself
Describe: function
function:
a clear statement of a reproducible relationship between input and desired output
Describe: product function
product function:
overall intent function of product
Describe: Abstraction
Abstraction:
process of ignoring what is particular and emphasizing the essential
Describe: Constraint
Constraint:
A statement of a clear criterion that must be satisfied by the product
Describe the tear down process
step1 - list the design issues
step2 - prepare for product tear down
step3 - examine the distribution and installation
step4 - disassemble, measure and analyse assemblies
step5 - form a bill of materials
During reverse engineering a product is:
- predicted
- observed
- disassembled
- analysed
- tested
- documented
In what terms is reverse engineering completed
- functionality
- form
- physical principles
- manufacturability
- assemblability
- general strengths
- general weakness
For cast aluminium alloys, what do the second 2 digits indicate.
What does Y indicate
1XX.Y
2 digits:
indicated minimum % of aluminium
i.e. 150Y - 99.5% alu
Y either (0,1)
0 - cast
1 - ingot
For wrought aluminium allows, what do final 2 digits indicate
what does second digit indicate
1XXX
Final 2 digits indicate minimum purity
e.g. 1050 is 99.50% Al
second digit indicates close relationship
e.g. 5052,5252,5325 are all very similar
Properties of non-heat treatable alloys
have low yield point, low tensile strength in the fully annealed condition. Hence easily formable
