Industrial

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Industrial Manufacturing Engineering

• Introduction to Design Techniques

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Topics

• Skills Assessment Exercise
• Syllabus
• Course policies/procedures
• Course overview
• History
• Modern Design Concepts
• Topics for next class

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Syllabus

• Written in very general terms
• Results of Skills Assessment Exercise will
  determine depth of topical coverage
• PLEASE READ!

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Skill Assessment Exercise

• THIS IS NOT A QUIZ OR EXAM!
• Put your name at top of sheet
• You have 15 minutes to complete as much as you
  can.

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Course Policies and Procedures

• In addition to those listed on syllabus
• You have 24/7 access to EMS building and CEAS
  computer labs with student ID
• Have course account on CEAS computers, see signs
  posted by lab doors for information on obtaining
  login and password for this account.
• No programs allowed on shared network drives

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Course Overview

• The important goals of this course are
• Teach systematic approach to engineering problem
  solving
• Build team working skills
• Improve communication (written and oral) skills

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History

• Weve always designed
• Early on tools and artifacts were hand crafted
  one-at-a-time. The cut and fit method of design.
  Hand axes from around 100,000 BCE are shown to
  the right.

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History (cont)

• Over time projects became more complex and the
  need to document the design arose.

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History (cont)

• One of the prime movers for advances in science
  has been the military.
• The Spanish sword or Gladius was mass produced
  around 200-300 BCE

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History (cont)

• In the late 1700s and early 1800s Eli Whitneys
  work with the cotton gin and musket making,
  introduced the concept of interchangeable parts

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Modern Design

• Today design has evolved into a systematic,
  documented approach to solving engineering
  problems.

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Modern Design (cont)

• This first issue we must then confront in modern
  engineering design is to define what a problem
  is.
• An engineering problem statement can range from
  very broad and general.
• Put a man on the moon and return him safely to
  earth within a decade

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Modern Design (cont)

• A more typical problem specification is given in
  the faucet example in your text with given
  parameters of
• Flow of 10 liters/min
• Max pressure 6 bar
• Normal pressure 2 bar
• Max water temperature 60 C
• Coupling size 10mm
• With the additional constraints of manufacturing
  volume, cost, appearance and the prominence of
  the company logo

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Modern Design

• The real world problems engineers and designers
  must solve are often called open-ended or
  ill-defined.
• Unlike a math or chemistry problem this type of
  problem will not have a nice clean solution
  method or procedure. Instead there may be
  multiple solutions and multiple solution paths.

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Modern Design

• Ill-Defined problem characteristics
• There is no definitive problem formulation, that
  is the problem cannot be clearly stated is vague
  and generally changes throughout the design
  process
• Any problem formulation may embody
  inconsistencies. The problem to be solved may
  have conflicts built in that need to be resolved
• The problem definition is solution dependant. It
  can be very difficult to define a problem
  independent of possible solutions.
• Proposing solutions is a means of understanding
  the problem. You can understand the problem more
  by proposing solution, this will also help in
  determining constraints
• There is no definitive answer to the problem.
  There can be multiple solutions possible. The
  engineer/designers job is to find the best
  solution.

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Modern Design

• In solving design problems you will need to
  balance the needs/wants of the client (problem
  presenter) with those of the intended user.

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Modern Design

• How do we begin to design?
• Ask questions! Find out what the design
  requirements are before beginning.
• Do research and collect data related to the
  problem
• Dont completely discard ideas and concepts.
• Dont latch onto one particular solution method.
• Keep information together (design journal or log
  book)
• SKETCH!!! Pictures are a great remembrance tool
  and faster to create than computer models.

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First Assignment

• Your first assignment is to write a memo briefly
  describing a design problem you would like to
  tackle. Be sure to include
• A brief description of how you perceive the
  problem.
• 5 things you know about the problem
• 5 things you will need to learn or study about
  the problem

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First Assignment (cont)

• Some projects available for your choosing
• The CEAS network servers are in a room with a
  failing A/C unit. Study, report on and recommend
  best alternative to keep these critical systems
  up and running.
• The CEAS laboratories will be receiving new
  printers, design printing cages to properly
  secure these new printers.
• Theft of incoming packages in the CEAS mailroom
  has grown. Study, report and recommend options
  for improving security in this area as well as
  maximizing the number of available mailboxes.

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First Assignment (cont)

• One week from today, you will be expected to give
  a brief oral presentation to the class.
• 2 minute time limit for talk
• Props OK, no Powerpoints
• Be prepared to answer questions

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Next Meeting Topics

• Design Journals
• Memo writing
• Project Assignment Questions