How to calculate hardness
How to calculate hardness
http://physicsweb.org/articles/news/10/3/7/1
9 March 2006
When it comes to measuring the "hardness" of a material, most tests are distinctly low-tech and basically involve
pressing a diamond tip into the surface and measuring the size of the dent produced. Now, however, physicists in the
Czech Republic have developed a new way to predict the hardness of materials without going anywhere near a lab. The
results, obtained from first-principles calculations alone, agree well with experimental data and could help scientists
make harder materials (Phys. Rev. Lett. 96 085501).
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Relevant Pages
- Re: Hardness tester wanted
... at least one of the different hardness tests is designed around ... surely be proportional to the relative hardnesses of the materials. ... Wilson, it measures the depth of penetration, not the diameter. ... Measure the diameter of ball bearing. ...
(rec.crafts.metalworking) - Re: Changing over to ceramic bearings.
... "Materials Science and Engineering." ... and I get the concepts of hardness and fracture toughness. ... modulus, the "height" of the line, the strength. ... Callister also says that yield and hardness are related in metals, but says nothing of the sort for ceramics. ...
(rec.bicycles.tech) - Re: Changing over to ceramic bearings.
... "Materials Science and Engineering." ... and I get the concepts of hardness and fracture toughness. ... modulus, the "height" of the line, the strength. ... Callister also says that yield and hardness are related in metals, but says nothing of the sort for ceramics. ...
(rec.bicycles.tech) - Re: Hardness tester wanted
... Enco has a new one for 800 bucks iirc. ... at least one of the different hardness tests is designed around ... So I have get impressions, one in the unknown material, and one in the ... surely be proportional to the relative hardnesses of the materials. ...
(rec.crafts.metalworking) - Re: Induction Stove for Hysteresis Experiments...
... it was a classic way to heat steel for things ... "Measuring Soft Ferrite Core Properties" ... "Testing Critical Characteristics of Soft Ferrite Materials ...
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