Ted,

I think you are trying to use a wrong technique for the task. 

A simple cross-sectioning will answer your question, while doing Dye&Pry
will most probably give you confusing data.

Regards,

Vladimir 
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ted Tontis
Sent: Monday, August 25, 2008 10:49 AM
To: [log in to unmask]
Subject: Re: [TN] Cracked component leads

I am looking to rule out the possibility that the crack is further then
the
tin plating. I am pulling parts off the reel that have what appears to
be a
crack in the terminal. We are also seeing a large number of assemblies
with
severed leads after the wave process. The supplier is telling me that it
is
the plating that is cracked not the lead. I hope that after dyeing, the
lead
can be broken off and the penetration of dye measured. If it penetrates
the
copper then I know the crack is deeper then the tin plating.

Thank you,

Ted

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
Sent: Monday, August 25, 2008 9:37 AM
To: [log in to unmask]
Subject: Re: [TN] Cracked component leads

Once you have done your dye penetrant what means/technique will you use
to determine how far and what direction the suspected crack propagated.?

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