- Nov 20, 1999
- 22,994
- 779
- 126
Aluminum:
https://www.youtube.com/watch?v=znK652H6yQM
Plastic:
https://www.youtube.com/watch?v=FwM4ypi3at0
Any questions?
EDIT:
In response to the Consumer Reports "test" that proves there's nothing wrong with the IPhone 6+, it is a very flawed test because they used a 3 point bend test. A 4 point bend test would have been more approrpiate as the weak point of the iphone 6+ is not near the center:
http://www.researchgate.net/post/Why_do_we_have_both_3-point_and_4-point_bending-strength_tests
https://www.youtube.com/watch?v=znK652H6yQM
Plastic:
https://www.youtube.com/watch?v=FwM4ypi3at0
Any questions?
EDIT:
In response to the Consumer Reports "test" that proves there's nothing wrong with the IPhone 6+, it is a very flawed test because they used a 3 point bend test. A 4 point bend test would have been more approrpiate as the weak point of the iphone 6+ is not near the center:
http://www.researchgate.net/post/Why_do_we_have_both_3-point_and_4-point_bending-strength_tests
Why do we have both 3-point and 4-point bending-strength tests?
The peak stress produced in the 3-pt flexure fixture is at the specimen mid-point (or point contact) with reduced stress elsewhere. Hence, this analysis (stress localization) is ideal to test for specific isolation of stress on the specimen.
On the other hand, the 4-pt flexure fixture produces peak stresses along an extended region of the specimen surface. Hence, exposing a larger area of the specimen is possible with more potential for defects and flaws to be highlighted.
For other information's http://www.nordson.com/en-us/divisi...ents/3_4point bend Flexural AppNote Nov11.pdf
http://www.instron.us/wa/acc_catalog/prod_list.aspx?cid=833&cname=3 and 4 Point Flexure Fixtures
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