dB per octave spec with a ASD curve
dB per octave spec with a ASD curve
(OP)
When someone specs 2dB or -2dB 'per octave' in the context of acceleration spectral density, what does it mean graphically?
Tunalover
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
dB per octave spec with a ASD curve
|
dB per octave spec with a ASD curvedB per octave spec with a ASD curve(OP)
When someone specs 2dB or -2dB 'per octave' in the context of acceleration spectral density, what does it mean graphically?
Tunalover Red Flag SubmittedThank you for helping keep Eng-Tips Forums free from inappropriate posts. Reply To This ThreadPosting in the Eng-Tips forums is a member-only feature.Click Here to join Eng-Tips and talk with other members! |
ResourcesWhat is rapid injection molding? For engineers working with tight product design timelines, rapid injection molding can be a critical tool for prototyping and testing functional models. Download Now
The world has changed considerably since the 1980s, when CAD first started displacing drafting tables. Download Now
Prototyping has always been a critical part of product development. Download Now
As the cloud is increasingly adopted for product development, questions remain as to just how cloud software tools compare to on-premise solutions. Download Now
|
RE: dB per octave spec with a ASD curve
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: dB per octave spec with a ASD curve
dB is a log of a ratio...but what is the ratio in this case?
Tuna
Tunalover
RE: dB per octave spec with a ASD curve
Possible reference value for an asd would be 1 g^2/Hz but you'd get very negative values. Don't get caught out by the difference between 10 log and 20 log for your dBs.
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: dB per octave spec with a ASD curve
http://www.vibrationdata.com/dboct.exe
Tom Irvine
www.vibrationdata.com
RE: dB per octave spec with a ASD curve
Tunalover