Activity Product Analysis

Transcription

1 Name: Date: Period: Introduction Activity Product Analysis What is your favorite brand of tennis shoe? Maybe you prefer casual shoes over tennis shoes. No matter the shoe, the primary design focus is the same what materials should engineers consider when designing the shoe? After all, the shoe must meet your performance expectations and must be durable enough for everyday demand. While materials possess similarities to one other, their differences are equally important as engineers search for the correct material to create a product. When selecting materials, engineers must ask the following questions. Will extreme conditions affect the material? Will these conditions cause the material to fail, and if not, how safely will the material carry the load? How will the material behave if its temperature is drastically changed? Will the material remain as strong as it was prior to being formed? Will the material corrode when exposed to extreme conditions? When engineers can t find a material that provides the desired traits, they invent new materials by combining several existing materials. Material selection for products requires engineers to consider material properties against anticipated use. Engineers must sometimes find an alternative material for a part in their design for many reasons, including environmental issues, cost issues, or safety issues. For example, during World War II, each B-17 Super Fortress Bomber was built with approximately 1000 pounds of rubber. Scientists were tasked with finding or developing a suitable rubber alternative in order to lighten the aircraft s load. Equipment Computer 3D modeling software Engineering notebook Digital scale Graduated cylinder, beaker, etc. Water Nail Measuring device dial caliper, ruler, micrometer, etc. POE Unit 2 Lesson 2.2 Activity Product Analysis Page 1

2 Procedure Categorizing materials and identifying their properties is an essential skill in the everyday life of an engineer. Part 1 Analysis: 1. Individually brainstorm a list of ten 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. b. c. d. e. f. g. h. i. j. 2. As a team identify two products from your brainstorming list to bring to the next class meeting. #1: #2: Product Team member responsible for bringing product to class 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 POE Unit 2 Lesson 2.2 Activity Product Analysis Page 2

3 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 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 8. Select two components from each product to investigate further. Product #1 Components Product #2 Components POE Unit 2 Lesson 2.2 Activity Product Analysis Page 3

4 9. Further Component Investigation: Product #1 Component #1 Test Description Results Continuity Test: Ferrous Metal 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. Pass a magnet over the component. Hardness: Weight: Density: Surface Area: Hand Flexure Test: Use a nail to attempt to scratch the Use a digital scale to weigh the component. 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. Mass = weight / gravity Density = mass / volume Use a measuring device and calculator to sum all of the areas that cover the Use only your hands and attempt to bend the component. Does the component permanently deform? Product #1 Component #2 Test Description Results Continuity Test: Ferrous Metal 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. Pass a magnet over the component. POE Unit 2 Lesson 2.2 Activity Product Analysis Page 4

5 Hardness: Weight: Density: Surface Area: Hand Flexure Test: Use a nail to attempt to scratch the Use a digital scale to weigh the component. 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. Mass = weight / gravity Density = mass / volume Use a measuring device and calculator to sum all of the areas that cover the Use only your hands and attempt to bend the component. Does the component permanently deform? Product #2 Component #1 Test Description Results Continuity Test: Ferrous Metal 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. Pass a magnet over the component. Hardness: Weight: Use a nail to attempt to scratch the Use a digital scale to weigh the component. 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. POE Unit 2 Lesson 2.2 Activity Product Analysis Page 5

6 Density: Surface Area: Hand Flexure Test: Mass = weight / gravity Density = mass / volume Use a measuring device and calculator to sum all of the areas that cover the Use only your hands and attempt to bend the component. Does the component permanently deform? Product #2 Component #2 Test Description Results Continuity Test: Ferrous Metal 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. Pass a magnet over the component. Hardness: Weight: Density: Surface Area: Hand Flexure Test: Use a nail to attempt to scratch the Use a digital scale to weigh the component. 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. Mass = weight / gravity Density = mass / volume Use a measuring device and calculator to sum all of the areas that cover the Use only your hands and attempt to bend the component. Does the component permanently deform? POE Unit 2 Lesson 2.2 Activity Product Analysis Page 6

7 Part 2: Modeling 10. Assign product components to individual team members. Product Component Assigned Team Member 11. Use a measuring device to create a detailed drawing of your assigned product component, including appropriate dimensions and annotations. Detailed component drawing: 12. Use 3D modeling software to create a detailed 3D drawing of your assigned product component. 13. Use 3D modeling software to determine the components: Area: 14. Use 3D modeling software to create and print a Component Handout illustrating your assigned component and highlighting its distinguishing characteristics. POE Unit 2 Lesson 2.2 Activity Product Analysis Page 7

8 Conclusion 1. How does design affect material selection? 2. What other factors affect material selection other than design? 3. What properties of materials are important to understand before selecting materials for production? 4. What is liability? What are the liability issues, if any, related to the materials for each product that your team selected? POE Unit 2 Lesson 2.2 Activity Product Analysis Page 8