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Equipment Thermal Imaging - The Want is Strong

Discussion in 'Photography, Art & Design' started by Gareth Halfacree, 11 Jul 2019.

  1. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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    Biggest problem you're going to have there is the same problem I have: it ain't the choice of camera, but figuring out how best to deal with differing thermal emissivity and reflectivity across the multi-material surface of a PCB. Otherwise you'll have a pretty picture with absolutely no usable data behind it.
     
  2. Bloody_Pete

    Bloody_Pete Technophile

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    Yeah, we just use Flir camera for that. They're basically the best in the industry.
    I let the nice gentleman with the Phd deal with those problems :p One was is to use multiple cameras at different angles, that overcomes the reflectivity, but you need some fairly complicated software to map it out. Or structure you're enviroment to limit emmission sources, then you'll have less reflections.
     
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  3. edzieba

    edzieba Virtual Realist

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    Ghetto solution: spray everything with grey primer. Or if you need to use it afterwards, dust liberally with talc (also good for structured light scanning, meatbags tend to complain if you want to paint them grey). Doesn't play as nicely with the IR + vis composite trick unless you do your visible light photo first and manually realign for the composite afterwards.
     
  4. Bloody_Pete

    Bloody_Pete Technophile

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    Depends on what its made from, some will be nearly transprent and others highly reflective.
     
  5. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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    I've found a midpoint between "paint it" and "dust it": Crack Detector Developer. It's basically a slurry of zinc oxide in naphtha. Spray it on, the naphtha evaporates, leaves a coating of zinc oxide behind - and you can wash the zinc oxide off afterwards with isoprop and a bit of elbow grease. You never quite get it out of *every* nook and cranny, but it's good enough!
     
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  6. edzieba

    edzieba Virtual Realist

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    Ooh, that sounds like a good alternative to zinc-rich 'weld through' primer!
     
  7. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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    That was quick:



    Postage is saying 1-8 weeks, mind, so it could still be a while before it's in my sweaty mitts.
     
  8. Bloody_Pete

    Bloody_Pete Technophile

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    What are you making? I use PCBway is they so cheap its ridiculous!
     
  9. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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    edzieba and Bloody_Pete like this.
  10. Bloody_Pete

    Bloody_Pete Technophile

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    Oh awesome,I'll have to keep them in mind!
     
  11. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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    3D doodad shipped - let's hope the delivery is closer to the one-week estimate than the eight-week estimate!
     
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