Thanks Dave

I suspected as much but wanted to check up on the current state of play.

Best Regards

Dr Lee Hitchens

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From:  David Hillman <[log in to unmask]>
Date:  Thursday 7 May 2015 13:40
To:  TechNet E-Mail Forum <[log in to unmask]>, Lee Hitchens
<[log in to unmask]>
Subject:  Re: [TN] Conformal Coating Thickness Measurement on legs of
components

Hi Lee - as part of the IPC JSTD 001 "State of the Industry Assessment" of
Conformal Coating Material & Application subcommittee activities, we looked
at a number of conformal coating thickness measurement
technologies/techniques since the test plan had 1,950 components to measure
representing 26 material/application sets. We found several very adequate
technologies for flat surfaces but as soon as you had a surface with any
level of topography, the ability to measure coating thickness became very
suspect. We settled on a very prescribed, rigid metallographic
cross-sectional technique that is working very well other than it is slow
and of course, destructive. I wish I had a better option for you but we
didn't have any success in finding an adequate nondestructive method for
nonflat surfaces. It is clearly a topic the industry needs and desires
better method for measurement option.

Dave Hillman
Rockwell Collins
[log in to unmask]

On Thu, May 7, 2015 at 2:49 AM, Lee Hitchens <[log in to unmask]>
wrote:
> Hi all
> 
> I am being asked regularly now on options for measuring coating thickness on
> legs. I am trying to determine if there is actually a practical solution?
> Cost is less important compared to being a workable relatively quick
> process?
> 
> One thing that could be an issue is many times its a silicone coating and
> this tends to be less than clear optically. Some systems need clear coatings
> to be successful.
> 
> Has anyone had any success with this?
> 
> Best Regards
> 
> Dr Lee Hitchens
> 
> SCH Technologies is a Division of SCH Services Limited
> 
> Mob: +44 (0) 7862 25 33 21 <tel:%2B44%20%280%29%207862%2025%2033%2021>
> 
> www.conformalcoating.co.uk <http://www.conformalcoating.co.uk>
> <http://www.conformalcoating.co.uk/>
> 
> 
> 
> 
> 
> 
> ______________________________________________________________________
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