Exercises for CES Edupack required questions PDF

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CES EduPack Active Learning Projects

CES EDUPACK BY GRANTA Student Exercises

STUDENT NAME:___________________________________________

STUDENT NUMBER:________________________________________

SWINBURNE UNIVERSITY OF TECHNOLOGY

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CES EduPack Active Learning Projects

Contents Part A: Introduction to CES EduPack........................................................3 Finding materials records in CES EduPack by Browsing..............................................3 Finding materials records in CES EduPack by Searching.............................................4 What property data is in CES EduPack?.......................................................................... 5 Property charts in CES EduPack...................................................................................... 6

Part B: The Material Selection Process...................................................11 Using CES EduPack Chart Stage to Select Materials....................................................11 Using CES EduPack Limit Stage to Select Materials....................................................14 Using CES EduPack Tree Stage to Select Materials.....................................................15 Materials Selection Combining Stages in CES EduPack..............................................16 Using the Results Area of CES EduPack....................................................................... 17 Using Material Property Charts....................................................................................... 17 Material Indices................................................................................................................ 19 Economic Factors............................................................................................................ 21

Part C: Translating the Design Requirements........................................22 The Design Process......................................................................................................... 22 From Design Requirements to Constraints................................................................... 23 Design Limiting Properties.............................................................................................. 24 Translating Design Requirements.................................................................................. 25 Project: Portable Bike Storage Shed.............................................................................. 27 Project: Cooking Spatula for a College Student............................................................ 28 Project: An Outdoor Oven............................................................................................... 29 Project: Playground play set........................................................................................... 30 Project: Racing Yacht Mast............................................................................................. 31 Project: Beginner Child’s Swimming Goggles.............................................................. 32 Project: Aircraft Cargo Door............................................................................................ 33 Project: Custom Broken Wrist Brace............................................................................. 34

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CES EduPack Active Learning Projects

Part A: Introduction to CES EduPack 1. Browse Level 1 in Material Universe in CES EduPack and name 10 classes of materials. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

Finding materials records in CES EduPack by Browsing

Toolbar

Home

Browse

Table:

MaterialUniverse

Subset:

All materials

Search

Chart/Select

2. Find, by Browsing, the Level 1 record for the Titanium alloys via Metals and alloys / Non-ferrous / Titanium alloys.

3. Find, by Browsing, the Level 1 record for the ceramic Alumina via Ceramics and glasses / Technical ceramics / Alumina.

4. Find, by Browsing, the Level 2 record for Age-hardening wrought aluminum alloys via Metals and alloys / Non-ferrous / Aluminum and alloys / Age-hardening …

5. Find, by Browsing, the Level 2 record for Plywood via Hybrids / Natural materials / Plywood. www.grantadesign.com/education

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CES EduPack Active Learning Projects

6. Find, by Browsing, the Level 1 record for Phenolics via Polymers and elastomers / Polymers / Thermosets / Phenolics.

7. Find, by Browsing, the Level 1 record for Epoxies. Are they cheaper or more expensive than Phenolics (see previous question)?

Answer:

8. Find, by Browsing, the Level 1 record for Copper Alloys. What is its thermal conductivity? What is its price?

Answer:

Finding materials records in CES EduPack by Searching Video tutorials on the Search function can be accessed by clicking Help > Video Tutorials.

Toolbar

Home

Browse

Search

Chart/Select

Search Change… Polylactide

9. Find, by Searching Level 2, the record for Polylactide; what is it? Answer:

10. Use the Search facility to find out what Plexiglas is. Do the same for Pyroceram. Answer:

11. Find, by Searching in Level 1, records for materials that are used for Lenses: What are they? Answer:

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CES EduPack Active Learning Projects

What property data is in CES EduPack? 12. Name 6 types of property data available at Level 1 and 8 kinds at Level 2. Answer:

How do I find a definition of the property? Mechanical properties Young’s modulus Fracture toughness ……..

Thermal properties Thermal conductivity Maximum use temperature ……..

Electrical properties Electrical conductivity Dielectric strength ……..

Eco properties

Fracture Toughness Definition……………………………… …………………………………………… …………………. …………………. Measurement ………………… …………………. …………………. Origins ………………… …………………. ………………….

Embodied energy CO2 footprint ……..

13. What is the Dielectric strength of a material? Click on the field name “Dielectric strength” or the behind it in any record . 1 F1 F1

Answer:

1 Note that this property only appears in the records for materials that are electric insulators and is not available in Level 1. www.grantadesign.com/education

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CES EduPack Active Learning Projects

Property charts in CES EduPack The guidance charts in CES EduPack are an easy way to see the range of values different classes of materials have for a particular property.

14. View the guidance chart for density. Approximately what range of values do foams have? What about metals and alloys? Click on the Chart/Select icon. Set the Select from field to Level 2 using the drop-down menu.

Click on the

‘Limit’ icon in the selection stage area. This will bring up to the right a list of the various types of properties that materials can be given. Click on the headings to show the specific properties. To produce the guidance chart, click on the

icon next

to the property name. Hover over a material class to see the range. Note the logarithmic scale. Answer:

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CES EduPack Active Learning Projects

15. Video tutorials on Graph Plotting can be accessed by clicking Help > Video Tutorials. Make a bar chart with Fracture toughness on the Y-axis using Level 1, Materials. Click on “Chart/Select” Then select Level 1 And proceed as shown.

Toolbar

Home

Browse

Search

Chart/Select

1. Selection data MaterialUniverse: All materials

X-axis 2. Selection Stages

Y-axis

List of properties Density Yield strength Fracture toughness etc

Label two (or more) materials by clicking on the bars. Label Magnesium alloys (right-click on name in Result window on the left, and click on “Label”). Use the BOX selection tool toughness.

to find the four materials with the highest values of fracture

16. Make a bar chart at Level 2 with Price on the Y-Axis and the 4 main classes of materials on the X-Axis. Which materials class has the widest range of values? What is the cheapest material per kilogram? Answer:

Under the ‘Chart/Select’ mode on the toolbar click to make a Chart. The ‘New Chart Stage dialog appears. Set the Y-Axis to plot price. For the X-Axis, click on the button ‘Advanced…’. This will bring up another dialog box which allows you to set a formula for what goes on the X-Axis.

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CES EduPack Active Learning Projects

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17. Which is the cheapest material per unit volume?

Click on this icon to Edit stage from the previous exercise. Click on Y-Axis and Advanced, then make the function Price * Density. Click to the right-hand-side of the highlighted word price and press the * button. Then find density in the property list and double click on it. Once you have [Price]*[Density] in the window click OK twice. Answer:

18. Make a new bubble chart with Density on using Level 1.

the X-Axis and Young’s modulus on the Y-Axis

Proceed as shown. Toolbar

Search

Browse

Home

Chart/Select

1. Selection data MaterialUniverse: All materials

X-axis 2. Selection Stages

Y-axis

List of properties Density  Yield strength  Young’s modulus  etc

Switch on the envelopes by clicking the icon

19. Make a new bubble chart with Density on the X-Axis and Yield strength on the Y-Axis using Level 2 Click on “Chart/Select” Then select MaterialUniverse: All materials. And proceed as shown.

Toolbar

Home

Browse

Search

Chart/Select

1. Selection data MaterialUniverse: All materials

X-axis 2. Selection Stages

Y-axis

List of properties Density Young’s modulus Yield strength etc

Label two (or more) materials by clicking on the bubbles. www.grantadesign.com/education

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CES EduPack Active Learning Projects

Switch on the envelopes by clicking the icon Do any metals have yield strength less than 10 MPa? Answer:

20. Use the BOX selection tool to find materials with yield strength greater than 600 MPa and a density less than 2000 kg/m3. Answer:

21. Which two materials have the highest values of Yield strength / Density? Make a bar chart with Yield strength / Density on the Y-axis using Level 1 Materials. Select Advanced in the axis-selection box. Use the function-builder to make the function [Yield strength (elastic limit)] / [Density] on the Y-axis. Answer:

22. Now add [Young’s modulus] / [Density] to the X-Axis to make a bubble chart, still using Level 1 Right-click on the Stage name “Stage 1: Yield strength (elastic limit) / Density” Select Edit stage – X-Axis – Advanced, then make the function Young’s modulus / Density. Find and label CFRP and GFRP.

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CES EduPack Active Learning Projects

23. Use CES EduPack to find, from among the materials that appear in Level 1, (a)

the material with the highest density Answer:

(b)

the metal with the lowest modulus Answer:

(c)

the polymer with the highest density Answer:

(d) the approximate ratio of the modulus of woods measured parallel to the grain and perpendicular to the grain Answer: (e)

the approximate range of modulus of elastomers Answer:

24. Use CES EduPack to find, from the materials that appear in Level 1, (a) the cheapest material with a modulus greater than 1 GPa. Answer: (b) the cheapest metal. Answer: (c) the cheapest polymer. Answer: (d) whether magnesium alloys are more or less expensive than aluminum alloys. Answer: (e) whether PEEK (a high performance engineering polymer) is more or less expensive than PTFE. Answer:

25. Which class of materials has the highest stiffness (Young’s modulus)? Answer: 26. Which class of materials are the strongest in tensile tests? Answer: 27. Which class of materials has the highest specific heat capacity? Answer: 28. Which class of materials has the largest range of melting point? Answer: 29. Using Level 2, which class of materials has the lowest Electrical Resistivity? Answer: 30. Which class of materials has the highest CO2-footprint of production? Answer:

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CES EduPack Active Learning Projects

Part B: The Material Selection Process

Design requirements:

Data: Comparison Engine:

Expressed as

Constraints

 Screening  Ranking

Able to be molded Water and UV resistant

 Documentation

Stiff enough Strong enough

Final Selection

Materials Attributes Process Attributes Documentation E.g. Density Price Modulus

In Part B (this part) we focus on the central section of the design strategy, the selection. We have used translation, described in Part A, to establish the design requirements, and CES EduPack can now provide us with the data to perform the systematic selection which is described in Lecture Unit 7. In order to prepare for the exercises, think about the process you went through the last time you bought an electronic gadget e.g. mobile phone, computer, radio etc. Try to think about 3 constraints you screened on. Try to remember 2 objectives you ranked on. Where did you get your data? What documentation did you read?

Now, again using CES EduPack, we will learn how to apply the constraints, eliminating materials that cannot meet the design requirements, and rank the ‘survivors’ using the objectives to create a shortlist of candidate materials. CES EduPack offers 3 selection tools: the Chart, Limit, and Tree stages.

Using CES EduPack Chart Stage to Select Materials 1. Video tutorials on the Chart Stage can be accessed by clicking Help > Video Tutorials. Make sure you can find these and that they run on your browser. 2. Make a bar chart with Fracture toughness on the Y-Axis using Level 1, Materials. Click on “Select”, then select “Level 1” under “MaterialUniverse” and proceed as shown.

Toolbar

Home

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1. Selection data 2. Selection Stages

X-Axis

Y-Axis

List of properties Density Yield strength

CES EduPacktoughness Active Learning Projects Fracture

Label two (or more) materials by clicking on the bars.

etc

Label Magnesium alloys (right-click on name in Result window on the left, and click on “Label”). Use the BOX selection of fracture toughness.

tool

to find the five materials with the highest values

Answer.

3. Make a bar chart with Price on the Y Axis and the 4 main classes of materials on the X-Axis using Level 2. Which materials class has the widest range of values? What is the cheapest material per kilogram? (You can change from metric to imperial units in the options menu.) Under the ‘Chart/Select’ mode on the toolbar, click to choose the Chart selection stage. The ‘Chart Stage’ dialog appears. Set the Y-Axis to plot price. For the X-Axis, under ‘Category’ click on the button ‘Advanced…’. This will bring up another dialog box which allows you to set a formula for what goes on the X-Axis.

Select the ‘Trees’ tab. Double-clicking any folder will insert it into the box above. Whatever goes into this box will thus be reflected on the X-Axis. Answer.

4. Which is the cheapest material per unit volume? Click the icon to Edit stage. Click on Y-Axis and Advanced, then make the function (Price * Density). Click to the right-hand-side of the highlighted word Price and press the * button. Then find Density in the property list and double click on it. Once you have [Price]*[Density] in the window click OK twice. Answer.

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CES EduPack Active Learning Projects

5. Make a new bubble chart with Density on the X-Axis and Young’s modulus on the Y- axis using Level 1, Materials settings. Click on “Select” Toolbar

Home

Browse

Search

Chart/Select

1. Selection data MaterialUniverse: Edu Level 2

2. Selection Stages

X-Axis

Y-Axis

List of properties Density Yield strength Young’s modulus etc

Then select “Edu Level 1” and proceed as shown. Switch on the envelopes by clicking the icon By what factor are polymers less stiff than metals? Is wood denser or less dense than polyethylene (PE)? Answer.

6. Make a new bubble chart with Density on the X-Axis and Yield strength on the Y-Axis using Level 2, Materials settings. Label two (or more) materials by clicking on the bubbles. Switch on the envelopes by clicking the icon Do any metals have yield strength less than 10 MPa (2 ksi)? Answer. 7. With the graph created in the previous exercise, use the BOX selection tool with yield strength y > 600 MPa (90 ksi) and a density  < 2000 kg/m3 (120 lbs/ft3).

to find materials

After drawing the box with approximately these values, right-click on the box and select “Properties…” to adjust the limits. In materials selection, however, it is more common to use the GRADIENT-LINE selection tool. Find the material with the highest “specific strength” (y/) by selecting the line selection tool and entering a slope of 1 and choosing “Maximize”. Click anywhere on the graph to place the line. The materials below the line will be grayed out. Then move the line to the top left of the graph until only one material is left above it. Answer.

8. Use a Young’s modulus – Density (E-  ) chart at Level 2 to identify materials with both a modulus E > 45 GPa and a density  < 2000 kg/m3. Answer.

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CES EduPack Active Learning Projects

Using CES EduPack Limit Stage to Select Materials 9. Video tutorials on the Limit Stage can be accessed by clicking Help > Video Tutorials. Make sure you can find these and that they run on your browser. Toolbar

Home

Browse

Search

Chart/Select

MaterialUniverse: All materials

A Limit Stage applies numeric and discrete constraints. Required upper or lower limits for material properties are entered into the Limit stage property boxes. If a constraint is entered in the Minimum box, only materials with values greater than the constraint are retained. If it is entered in the Maximum box, only materials with smaller values are retained. The selection will show in the Results window in the bottom left of the CES EduPack screen. Make sure you can generate the limit stage dialogue box and try the small buttons to the left of the Min/Max boxes to generate property range information.

10. At Level 1 or 2, use a “Limit” stage to find materials with modulus E > 185 GPa...