ME_541_Fall_2023_Homework_1
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ME 541 – Engineering Design: A Decision-based Perspective
Fall 2023
Homework 1: Decision-making methods
Due:
Tuesday, September 12
th
2023, 11:59 PM (Eastern timezone)
Name:
Email:
Maximum Points: 20
Submission:
This assignment must be submitted online as a single PDF file on Gradescope. Please use
this page with your name and email as the cover page for your submission.
1.
Decision Method
In this part, you are asked to choose
two
decision-making methods from the list
below (discussed in Module 2, Slide 5).
•
Weighted sum of attributes
•
Analytical hierarchy process
•
Pugh matrix
•
Quality function deployment
•
Decision support problem
1.1.
Description of the methods:
(6 points)
Choose two decision-making methods and provide a brief
description of each method (
∼
1 page total), and compare the two. The resources linked for each method
are starting points. Do not simply list information from the articles linked. Provide in-text citations for the
sources used in your reading.
1.2. Analysis of the methods:
(4 points)
Describe how each method may be used. Are there scenarios
where one method would be better than the other? What are the pros and cons of each method? Are there
decision scenarios in your work or personal life where you could see either of these methods being used?
2.
Vehicle Purchase Decision
In this problem, you are asked to apply a decision-making method to
a vehicle purchase decision.
The scenario is as follows.
Imagine that you are a customer interested in
purchasing a new passenger car. You are looking for a compact affordable vehicle with a compact size, good
styling and appearance, good fuel economy, reliability, driver comfort and ergonomics, simple infotainment
system, good safety features, good vehicle handling, responsive engine, low noise and vibrations, optional
features (e.g., heated seats, Wi-Fi, keyless entry, etc.) and good security features. You are willing to spend
around
$
35,000 (
±
$
5,000) on the car.
Choose a decision-making method researched in Part 1. Clearly state which method you have chosen.
2.1.
Alternatives:
(4 points)
Find three vehicles currently available in the compact car segment that
broad fit the criteria listed above. Gather information about the three vehicles, including
•
important dimensions (e.g., exterior and interior, legroom, headroom, luggage space, etc.),
•
capacities (e.g., engine size, horsepower, torque, etc.),
•
characteristics of major subsystems (cylinder configuration, fuel injection, valve train, curb weight,
suspension type, brake type and size, etc.),
•
capabilities (e.g., 0-60 mph acceleration time, 60-0 mph braking time, miler per gallon, CO
2
emissions,
turning radius, etc.),
Page 1 of 2
•
features (e.g., navigation system, lane departure, smart headlamps, etc.), and
•
price of the three vehicles with different optional features.
Include a table in your submission with a comparison of the three vehicles.
2.2. Decision:
(3 points)
Use the decision-making method to choose the best vehicle alternative. Clearly
document any choices made along the process (such as selection of weights). Include sufficient details in the
submission so that one can replicate the results.
2.3. Evaluation
(3 points)
Having applied the decision-making method, critically evaluate the method.
Specifically,
(a) How does the method quantify the
preferences
of the decision maker.
Does the method place any
restrictions on the decision makers’ preferences?
(b) How was the available
information
about the alternatives is utilized. Was there any information that
was available, but not used in the decision?
Was there any information that was needed, but not
available?
(c) Discuss any pros and cons of the method that you found as you applied it to the vehicle decision.
Page 2 of 2
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