| Topic: |
Science > Physics |
| User: |
"als" |
| Date: |
21 Mar 2005 10:42:30 AM |
| Object: |
hardness testing |
can anyone please supply me with a conversion of hardness testing. i am
currently using the rebound method aka Leeb's method. the units that
are given on the readout are not workable. in the owner's manual it is
stated that the value "L" (hardness value) is the quotient of the
impact body's rebound and impact velocities, multiplied by 1000. i
would prefer to have something in SI units. thank you.
.
|
|
| User: "CWatters" |
|
| Title: Re: hardness testing |
21 Mar 2005 11:03:21 AM |
|
|
"als" <astilger@yahoo.com> wrote in message
news:1111423350.280113.104490@f14g2000cwb.googlegroups.com...
can anyone please supply me with a conversion of hardness testing. i am
currently using the rebound method aka Leeb's method. the units that
are given on the readout are not workable. in the owner's manual it is
stated that the value "L" (hardness value) is the quotient of the
impact body's rebound and impact velocities, multiplied by 1000. i
would prefer to have something in SI units. thank you.
This paper...
http://www.kint.nl/methoden/niet%20destructief%20onderzoek/hardheid%20metingen/Application%20Guide%20SD299_E.pdf
says there isn't a mathematical formula for doing the conversion. Aparently
instruments use lookup tables but Figure 11 looks like quite a good straight
line to me.
Try....
HRC = 0.1375*L - 48.75
.
|
|
|
|
| User: "John C. Polasek" |
|
| Title: Re: hardness testing |
21 Mar 2005 11:01:34 AM |
|
|
On 21 Mar 2005 08:42:30 -0800, "als" <astilger@yahoo.com> wrote:
can anyone please supply me with a conversion of hardness testing. i am
currently using the rebound method aka Leeb's method. the units that
are given on the readout are not workable. in the owner's manual it is
stated that the value "L" (hardness value) is the quotient of the
impact body's rebound and impact velocities, multiplied by 1000. i
would prefer to have something in SI units. thank you.
The L is dimensionless. Use any units you want for the two velocities.
John Polasek
If you have something to say write an equation.
If you have nothing to say, write an essay.
.
|
|
|
|
|
Related Articles |
|
|
