| Title: |
MatEd: Tempered for Safety |
| Url: |
http://www.materialseducation.org/ |
|
Developer:
NSF Materials Science Resource Center MST - Monroe Hall 20000 68th Avenue West Lynnwood, WA 98036-5999 |
|
| Student Level: |
Above high school |
| Activities: |
Laboratory |
| Topic: |
Glass, brittle fracture, tempered |
| Format: |
HTML |
|
Description:
Demonstrating the fracture behavior of annealed and tempered safety glass is one way to introduce students to the interesting materials that surround them in everyday life. Examining the fracture behavior of glass and understanding how that behavior can be modified, shows how materials can be made safer by altering their properties. In this demonstration, the students will observe the fracture toughness of tempered glass, understand the method and mechanisms used to toughen the glass and be introduced to fractography of glass. This demonstration can be used for students from elementary to college, with the depth of information easily altered for each age group. The materials required for this demonstration are obtained locally at discount and window glass stores. The glass sheets are sealed in polymer film for participant safety and to allow the students to observe the resulting fractures. |
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MatEd Core Compentencies:
0B. Prepare tests and analyze data
7.E Describe the general nature of ceramics and glass
7J. Demonstrate how materials properties are used in engineering design
14A. Describe structure, properties and behavior of glass
16B. Describe the effects of defects on materials properties |
|
Supplies and Equipment:
Tempered glass pane
Clear contact paper
Clear sealing tape
Steel Balls, 1” & 1.5”
Wood blocks
Tile Nippers |
|
Available From:
http://www.materialseducation.org/docs/modules/Reidmeyer%20Temper.pdf
http://www.materialseducation.org/ |
|
| Date: |
2009-09-03 |
| Original Reviewer: |
Tom Stoebe |
| Updated Review By: |
Hsien-Lin Huang |
| Date Of Record Creation: |
2009-09-03 23:49:50 (W3C-DTF) |
| Date Of Record Release: |
2009-09-03 23:52:56 (W3C-DTF) |
| Date Last Modified: |
2009-09-03 23:52:56 (W3C-DTF) |
| Cumulative Rating: |
NOT YET RATED |
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