Dienstag, 19. Oktober 2010

The inclined Impact Test

The inclined impact test constitutes a new reference to the prediction of the coatings’ impact failure, managing to approach loading stages of coated surfaces in different applications. In this experimental method, the repetitive impacts are applied on an oblique coated surface, which is loaded vertically and tangentially simultaneously. To calculate the occurring stress distribution in the loaded film’s and substrate’s region, an appropriate finite elements method (FEM) simulation is developed, which considers the mechanical elastic–plastic properties of all involved materials. In this way, critical equivalent stresses leading to a coating damage can be determined and moreover, the ratio of tangential to the normal stiffness between film and substrate can be quantified. This magnitude describes the adhesion strength and was further experimentally–analytically determined for coatings deposited on various adherent substrates. With the aid of the coating impact adhesion (CIA) metric, the film adhesion can further be qualitatively characterized and correlated to the film contact stiffness ratio.


I hope you liked the topic. Pls comment on the picture and text if you want.

Kommentare:

  1. Nice topic... I love all things physics

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  2. This reminded me a lot of statics class back in Undergrad....

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  3. This reminded me a lot of statics class...

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  4. This is nice stuff, I am actually taking a tribology course and it was cool to see some of these topics from a solid films side instead of a fluid interaction near the asperity layer perspective.

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  5. This is very interesting, check out superconductivity. I bet you will like it.

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  6. Interesting, i had never thought that a different angle would make a difference. It's funny, i research topics like this excessively, but i've never seen this. LOL i guess that's what Blogs are for huh?

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  7. this this kinda thing always makes me feel stupid

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  8. That's really interesting. I hope you have more physics heavy posts in the future.

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  9. crazy stuff man, very interesting mechanics

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