HU121 Engineering Perspectives

Fall 2013/14

Pharos University in AlexandriaFaculty of Engineering

Engineering Perspectives Laboratory

First Design Section

Design Sections 2

Learning Components

HU 121

2 HoursLab

Learning by DoingTeam-based

1 HourLecture

Learning by Lecture

Design Sections 3

Lab Section = 2 Hours

No teaching

Team-based

Design Sections 4

Team-based Learning“Coming together is a beginning. Keeping together is progressWorking together is success.” Henry Ford

http://archive.tlt.psu.edu/suggestions/teams/index.html

Building Blocks for TeamsPenn State

Design Sections 5

Management of Design Projects

– Available Resources (Material and Tools)– Students are assembled into teams; 5 students

each.– Projects are assigned per section (posted on PUA

webpage).

=========================– First team meeting (overseen by instructor):

• Elect coordinator• Define criteria of the project• Prepare a preliminary work plan• Prepare next week team assignments

Design Sections 6

Generic Plan

• Sketch Conceptual Development

• List tasks to be completed.

• Assign responsibility for all tasks.

• Develop a timeline.

• Develop and post a checklist. • Maintain a central folder.

(Drawings, Photos, Report, Presentation)

Design Sections 7

In the Lab• Discuss/Present team’s work

• Prepare next week’s Assignments

Outside the Lab• Obtain Needed Information from Sources:

– Internet– Faculty Members and Staff– Others

Design Sections 8

Team Dynamics

1. Listen actively. 2. Don't interrupt. 3. Ask questions. 4. Be aware of body language and tone. 5. Use appropriate humor. 6. Be patient. 7. Don't express an opinion as a fact. 8. Explain your reasons. 9. Compliment each other's ideas. 10. Evaluate - Do not criticize.11. Restate the original idea to be sure it is

understood. 12. Respond, don't react. 13. Critique the idea, not the person. 14. Be courteous.

Design Sections 9

Team Folder

• Each team member must keep a project folder during the section.

• The folder will hold the original work of the student:– Search results– Drawing– Calculations– Other Information

Design Sections 10

Project Planner • Week 1 Orientation• Week 2 Team Assembly/ Project Identification• Week 3 األضحي عيد• Week 4 Present Alternate Designs (Pros & Cons) Detailed Design• Week 5 Prepare and present an Implementation Plan• Week 6 Manufacturing/ Assembly/ Component Testing• Week 7 Manufacturing/ Assembly/ Component Testing• Week 8 Manufacturing/ Assembly / Component Testing• Week 9 الفصل نصف امتحانات• Week 10 Device Testing and Evaluation• Week 11 Device Debugging and Modification• Week 12 Device Improvement / Poster Preparation• Week 13 Final Device Testing• Week 14 Final Project Review• Week 15 Final Project Exam (in your section)

Design Sections 11

Faculty*

• Prof. Dr. Alaa HamdiE230

• Prof. Dr. Abdelsamie MoetE230

* All Faculty and Teaching Staff are available for consulting

Design Sections 12

Manufacturing and Assembly

• Engineering Perspectives Workshop ( الكريم. عبد (أ

• Engineering Perspectives Lab

• Engineering Workshops (Approval of Prof. Dr. Ala Hamdy required)

• Outsourcing

Design Sections 13

Design Sections 14

Steps of Engineering Design

1. Identify the need2. Define the criteria (from the instructor)3. Explore/ Research/ Investigate4. Generate alternative designs5. Choose one design (based on pros and cons)6. Produce a detailed design

7. Implementing (Manufacturing/Procurement/Assembly) 8. Testing and Evaluation

9. Redesign and Improvement.

Design Sections 15

6. Detailed Design

1. The Need

2. Design Concept

3. Calculations

4. Dimensions (Blueprint)

5. Materials (and Components)

6. Manufacturing (and Assembly)

7. Cost Estimate

8. Time Schedule

9. Team Work Assignments

10. Methods of Testing and Evaluation

Design Sections 16

In the Lab• Present team’s work

• Prepare next week’s work

Outside the Lab• Consult Sources:

– Internet– Faculty Members and Staff– Others

Design Sections 17

Design Projects

1. Rooftop Windmill Turbine

2. Solar Mobile Phone Battery Charger

3. Crack Propagation Sensor

4. Ping ball Projectile Launcher

5. Air Jet Vehicle

6. Hoop Stress Measurement

7. Solar Oven

8. Draw Bridge

Design Sections 18

Faculty*

• Prof. Dr. Alaa HamdiE230

• Prof. Dr. Abdelsamie MoetE230

* All Faculty and Teaching Staff are consulting resources

Design Sections 19

1. Rooftop Wind Turbine

• Like all renewable energy technologies, wind systems rely on two main parts: a collector to harness the energy and a generator with electronics to convert the collected wind energy into power we can use.

• In wind systems, the collector is the rotor, which is made up of a number of blades that rotate to power a generator that produces electricity.

• The student team is required to review ideas of wind turbine, design, build and test their own prototype. They are also required to propose suggestions for improving the performance of their prototype and for simplifying the manufacturing and assembly.

Design Sections 20

2. Solar Mobile Phone Battery Charger

• Photovoltaic (PV) Solar Panels generate electricity by the Photovoltaic Effect. Discovered in 1839 by 19 year old Edmund Becquerel.

• The photovoltaic effect is the phenomenon that certain materials produce electric current when they are exposed to light.

• Using commercially available PV panels, this project aims at designing, building and testing of a solar mobile phone battery charger.

• The student team will compare the performance of their charger to commercial devices and comment on the variance.

Design Sections 21

3. Crack Propagation Sensor• The process of implementing a damage identification

strategy for aerospace, civil and mechanical engineering infrastructure is referred to as structural health monitoring (SHM).

• Appropriate sensors on critical structural components could help to reduce costs by avoiding unnecessary inspections and will increase the safety of the monitored structures.

• In this project, the team shall conceive, design, build and test a sensor to detect a propagating crack from a stress concentration site.

• The sensor should be equipped with an alarm mechanism upon a specified crack extension is detected by the sensor.

Design Sections 22

4. Ping-Pong Ball Launcher

• This project involves designing, analyzing, constructing, and reporting on a launcher that will propel a Ping-Pong ball, in flight, for any arbitrary distance between one and 5 meters.

• The Ping-Pong ball must impact the target point with the

highest degree of accuracy. • Students may consider spring-loaded launchers,

compressed gas launchers, catapults, pendulums, and other similar mechanisms as the foundation for their design concept.

Design Sections 23

5. Air Jet Vehicle

• The goal is to apply what is known about mechanical interactions by building an air jet-driven vehicle that minimizes friction and drag.

• Materials are available in the lab and in the workshop and outsourced are used to build the balloon powered car.

• During performance testing one car will race at a time. One team member prepares the car at the starting line.

• Cars take off at "Go!" Timers start. • Time will be taken twice at preset distances and at car

stop (total run time).

Design Sections 24

6. Hoop Stress Measurements

• This projects is intended to guide freshman engineering students to discover the relationship between the internal pressure to stresses acting on the containing wall.

• An empty 64 oz soft drink bottle is used to model a cylindrical vessel.

• Students are required to devise mechanisms to introduce and measure a gas (air) pressure measure the stresses on the wall

• Measurements are plotted and compared to relevant theoretical values.

• This is to be carried out on the upswing (pressurizing) and downswing (depressurizing) of the device.

Design Sections 25

7. Draw Bridge• Students are asked to design a draw bridge, with the following

design specifications:

- Bridge should be 20 cm above the main surface- Bridge should span an 50 cm. - Bridge should be no less than 20 cm wide- Bridge should be stable and hold 1 kg weight in the center of the bridge- Bridge should allow boats (up to 50 cm tall) to occasionally sail under the bridge down the river

• Use any type of material (wood, metal, plastic, etc…) or a combination may be used

• Electric motors are suggested for any parts in motion. Any alternatives are encouraged.

Design Sections 26

8. Solar Oven

• The team is required to design, build and test a portable solar oven. The oven should be able to bring one liter of water in a black metal pot to boil less than 10 minutes. The system has to be adjustable to maximize power input during the day.

Design Sections 27