AW139 lost tail taxying DOH

[blakmax]

weak bonds?

Hi Arrakis. I have seen some pretty impressive stuff using thermography for larger area disbonds or delaminations, but I was unaware of the ability to find weak bonds. Do you have any published reference material for that? (Interested, not disbelieving.)

I could see the possibility for localised areas of weak bonds, but my understanding is that you need to have areas of good and bad bonds to enable a comparative assessment. In other words, thermography does not provide a numerical output based on a known standard, it relies on variations of temperature within the zone being inspected. If the entire region is weakly bonded, then such a comparative assessment may not be possible.

Regards

blakmax