1. Individually brainstorm a list of 10 common products found at home that consist of at
least two parts. These products may be items such as a cell phone, thumb drive, stapler,
backpack, etc. Record your list of products below.
a.Mechanical pencil
b.Computer
c.TV
d.Calculator
e.Wooden Table
f.Lamp
g.Book
h.Phone
i.Backpack
j.Door hinge
2. Identify two products from your brainstorming list.
Product
#1:Mechanical pencil
#2:Calculator
3. Examine and discuss as a team the functions and properties of both product #1 and
product #2.
4. Illustrate and describe product #1. Include detailed information relating to function,
operating procedure, operating environment, cost, manufacturing origin, and product life
cycle.
Illustration
Description
-Allows people to write in pencil without needing to
sharpen
-China
-$1.00
-Reusable forever until broken
5. Illustrate and describe product #2. Include detailed information relating to function,
operating procedure, operating environment, cost, manufacturing origin, and product life
cycle.
Illustration
Description
-Provides cell phone operations and application for
tools
-$290
-Reusable until broken but needs electronic charges
6. It may be necessary to disassemble your product in order to proceed with this activity.
See instructor before proceeding.
7. Sketch and describe all product components. Include detailed information relating to
component interaction and function within the product.
Illustration
Description
-Mechanical pencil eraser-Helps rub off any
mistake you may have made
Iphone touch keys-Protects the inside of the phone
from being hurt and used for navigation
Iphone battery charger- Used to provide energy to
the iphone connected to it.
Lead pencil tip- Holds the lead in place while
writing.
8. Select two components from each product to investigate further.
Product #1 Components
1.Eraser
2.Tip
Product #2 Components
1.Battery panel
2. Key decorations
9. Further Component Investigation:
Product #1 Component #1 _____________Eraser_________________
Test
Description
Results
Continuity Test
Use a multimeter with a built-in
continuity tester or a simple circuit
consisting of a power source and light
to check for the component’s ability to
conduct electricity.
No Continuity
Ferrous Metal Test
Pass a magnet over the component.
Not magnetic
Hardness
Use a nail to attempt to scratch the
surface of the component.
Softer than my nail
Weight
Use a digital scale to weigh the
component.
0.0003 kg
Volume
Submerge the component in a
container with a predetermined
measurable amount of water
(graduated cylinder, beaker, etc.). If
the component is buoyant, use a
paperclip to keep the object
submerged during testing. Measure
the increased volume of the water due
to the component being submerged in
the container.
5 mL
Mass
Mass = weight / gravity
3.06/10^-5 kg
Density
Density = mass / volume
6.12/ 10^-6 kg
Use a measuring device and calculator
to sum all of the areas that cover the
surface of the component.
0.57cm squared
Use only your hands and attempt to
bend the component. Does the
component permanently deform?
Bendable but not
permanently
deformed
Surface Area
Hand Flexure Test
Product #1 Component #2 _________Pencil tip_____________________
Test
Description
Results
Continuity Test
Use a multimeter with a built-in
continuity tester or a simple circuit
consisting of a power source and light
to check for the component’s ability to
conduct electricity.
No continuity
Ferrous Metal Test
Pass a magnet over the component.
Not magnetic
Hardness
Use a nail to attempt to scratch the
surface of the component.
Harder than my nail
Weight
Use a digital scale to weigh the
component.
0.0003 kg
Volume
Submerge the component in a
container with a predetermined
measurable amount of water
(graduated cylinder, beaker, etc.). If
the component is buoyant, use a
paperclip to keep the object
submerged during testing. Measure
the increased volume of the water due
8 mL
to the component being submerged in
the container.
Mass
Mass = weight / gravity
3.06/10^-5 kg
Density
Density = mass / volume
3.83/10^-6 kg
Use a measuring device and calculator
to sum all of the areas that cover the
surface of the component.
0.88cm^2
Use only your hands and attempt to
bend the component. Does the
component permanently deform?
Not bendable but
would be
permanently
deformed if it were
Surface Area
Hand Flexure Test
Product #2 Component #1 __________Iphone Charger____________________
Test
Description
Results
Continuity Test
Use a multimeter with a built-in
continuity tester or a simple circuit
consisting of a power source and light
to check for the component’s ability to
conduct electricity.
No continuity
Ferrous Metal Test
Pass a magnet over the component.
Not magnetic
Hardness
Use a nail to attempt to scratch the
surface of the component.
Harder than my nail
Weight
Use a digital scale to weigh the
component.
0.012 kg
Volume
Submerge the component in a
container with a predetermined
measurable amount of water
(graduated cylinder, beaker, etc.). If
the component is buoyant, use a
paperclip to keep the object
submerged during testing. Measure
the increased volume of the water due
to the component being submerged in
the container.
13 ML
Mass = weight / gravity
0.0012 kg
Mass
Density
Surface Area
Hand Flexure Test
Density = mass / volume
9.23 kg/mL
Use a measuring device and calculator
to sum all of the areas that cover the
surface of the component.
106.6 cm^3
Use only your hands and attempt to
bend the component. Does the
component permanently deform?
Slightly bendable
and could
permanently deform
if can bend all the
way
Product #2 Component #2 __________Iphone touch keys____________________
Test
Description
Continuity Test
Use a multimeter with a built-in
continuity tester or a simple circuit
consisting of a power source and light
to check for the component’s ability to
conduct electricity.
No continuity
Pass a magnet over the component.
Not magnetic
Ferrous Metal Test
Results
Hardness
Use a nail to attempt to scratch the
surface of the component.
Harder than my nail
Weight
Use a digital scale to weigh the
component.
0.008 kg
Volume
Submerge the component in a
container with a predetermined
measurable amount of water
(graduated cylinder, beaker, etc.). If
the component is buoyant, use a
paperclip to keep the object
submerged during testing. Measure
the increased volume of the water due
to the component being submerged in
the container.
19.5 ML
Mass
Mass = weight / gravity
0.008/9.3
Density
Density = mass / volume
4.18
Use a measuring device and calculator
to sum all of the areas that cover the
surface of the component.
150.59 cm^2
Use only your hands and attempt to
bend the component. Does the
component permanently deform?
Cannot bend but
would be
permanently
Surface Area
Hand Flexure Test
deformed if it were
able to
Conclusion
1. How does design affect material selection?
Some materials work better for long or short periods of time
2. What other factors affect material selection other than design?
Function can affect what material needs to be used
3. What properties of materials are important to understand before selecting materials
for production?
How hard it is, how they feel when holding, can they conduct electricity or heat, and etc
4. What is liability? What are the liability issues, if any, related to the materials for the
product that you selected?
Liability is the state of being responsible for something, especially by law. If it breaks for
no reason or hurts you, you can sue the company