ASTM and DIN testing..... is there a diffrence?

djoki · Post by **djoki** » Thu Jun 08, 2006 7:23 am

How the absorption coefficients of 703 would look like in DIN?

http://www.owenscorning.com/comminsul/d ... Series.pdf

AVare · Post by **AVare** » Fri Jun 09, 2006 12:12 am

A little different. ASTM testing data is for 1/3 octave bands. Even when only octave frequencies are reported, the actual data is 1/3 octave bands. DIN reporting on octave frequencies is for the octave band average of the three 1/3 octave bands. That is one difference that I recall immediately. Perhaps Eric can jump in provide a complete accurate description of the differences.

Andre

djoki · Post by **djoki** » Sat Jun 10, 2006 6:29 am

AVare wrote:A little different. ASTM testing data is for 1/3 octave bands. Even when only octave frequencies are reported, the actual data is 1/3 octave bands. DIN reporting on octave frequencies is for the octave band average of the three 1/3 octave bands. That is one difference that I recall immediately. Perhaps Eric can jump in provide a complete accurate description of the differences.

Andre

Hmmm....what this diffrence would look like when 703 would be measured with DIN norms?
Would the absorption coefficients change?

Code: Select all


ASTM

        in  mm      125     250     500    1000     2000    4000  Hz

703    2   (51)    0.17     0.86   1.14    1.07     1.02    0.98

AVare · Post by **AVare** » Sat Jun 10, 2006 6:52 am

I can not answer your question at all with the information you gave. ASTM testing AND reporting is on 1/3 octave bands. You have only shown the results in every third band, not all of them.

Andre

djoki · Post by **djoki** » Sat Jun 10, 2006 9:00 am

AVare wrote:I can not answer your question at all with the information you gave. ASTM testing AND reporting is on 1/3 octave bands. You have only shown the results in every third band, not all of them.

Andre

I would show you more results but I don't have

In Produkt PDFs they only show what I have posted.

Thanks for attansion...