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Acoustic Emission Consulting, Inc.
Acoustic Emission Consulting, Inc. specializes in the design of small portable AE instruments for field and lab use.
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Technical Discussions
vengadesh
Engineering,
Tech Mahindra LTD, India, Joined Mar 2016, 4

vengadesh

Engineering,
Tech Mahindra LTD,
India,
Joined Mar 2016
4
13:03 Mar-29-2016
probe output

Dear sir,
I have one doubt ,please help. we have 60 degree probe the prespex shoe was thickness reduced, due to continuous friction . the output of probe wavelength was changed into 65 degree. how can i draw DAC.? for that what is the formula for that..?

 
 Reply 
 
joan pagnoul
Student,
Technifutur, Belgium, Joined Mar 2014, 7

joan pagnoul

Student,
Technifutur,
Belgium,
Joined Mar 2014
7
15:19 Mar-29-2016
Re: probe output
In Reply to vengadesh at 13:03 Mar-29-2016 (Opening).

I think that first, your probe is useless because if I remember norms says 60+/-2 degrees.
And to draw a DAC, methods never change and there is no formula

1
 
 Reply 
 
Csaba Hollo
,
Retired, Canada, Joined Feb 2010, 301

Csaba Hollo

,
Retired,
Canada,
Joined Feb 2010
301
23:29 Mar-29-2016
Re: probe output
In Reply to vengadesh at 13:03 Mar-29-2016 (Opening).

If the code allows you to work with an angle outside of the 60 degree+-, then your calibrations, including regenerating your DAC, must be redone.
Several things have changed, not just your angle, but also your index point and most likely sensitivity.

1
 
 Reply 
 
massimo carminati
Consultant, AUT specialist
IMG Ultrasuoni Srl, Italy, Joined Apr 2007, 691

massimo carminati

Consultant, AUT specialist
IMG Ultrasuoni Srl,
Italy,
Joined Apr 2007
691
19:37 Mar-30-2016
Re: probe output
In Reply to vengadesh at 13:03 Mar-29-2016 (Opening).

Most codes would not allow you to use such a drifted angle from standard. You should recondition the probe or the wedge by adding a new wear sole, but before that you should bring back the original wedge angle to the original value. I warmly not suggest to just use sand paper for doing this.

 
 Reply 
 

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