1. Introduction To Engineering Bike Lab 1 – 2 Procedure
Taking Measurements
Material Identification
Do Bike Lab #1, Part I
Bike Lab 1 - 2

2. Lab 1 Procedure
Engineers often must make estimates of important quantities. We should have an idea of how good these estimates are.
Today we will:
Identify the material of three components by determining their mass density or specific weight.
Bike Lab 1 - 2

3. Tools
Measure dimensions of the components with a measuring tape, caliper, and a micrometer.
Measure weight (or mass) with a scale.
Bike Lab 1 - 2

4. Dial Caliper
Used to measure lengths with accuracy of inch. One revolution of the dial corresponds to a linear distance of 0.1 inch.
Bike Lab 1 - 2

5. Micrometer
Used to measure lengths with accuracy of inch. One rotation of the drum corresponds to a linear distance of inch. Can be used to measure distance between surfaces that are parallel.
The enlargement of the micrometer is provided for reference directly following this slide in the student’s course material.
Conversion Factors:
1 inch = m 1 kg weighs lb
Bike Lab 1 - 2

6. Density and Specific Weight of Common Engineering Materials
The enlargement of the materials chart is provided for reference directly following this slide in the student’s course material.
Bike Lab 1 - 2

7. Lab Procedure Worksheet A: Identify the material of three components
Make a sketch of the component.
Measure the dimensions of the component and mark them on the sketch.
Weigh the component.
The students have full page worksheets following the lab notes in their course material.
Bike Lab 1 - 2

8. Lab Procedure / Assignment
Worksheet A (cont.): Identify the material of three components
Calculate the volume of the component.
Determine the density (specific weight).
Identify the component’s material
Bike Lab 1 - 2