In really thin composite structures (like a bike) I hear that the only reliable way to detect cracks or delamination is with a dye penetrant test. Apparently, it's exactly what it sounds like. The part is soaked in a tagged (UV marker, magnetic, or other) fluid, cleaned, and then illuminated to check for otherwise invisible cracks.
X-Rays will miss small or thin cracks completely, just like when doctors miss bone fractures. Poor contrast, diffraction, and resolution make it difficult.
Do you have any reference which i can use it against the insurance company? something that will help me in court
I'm sick of them, they took their time for about a year, i'm going to take a lawsuit against them.
They always find "new things", for example, when the car hit me i crashed on my helmet really hard, there is a crack inside the helmet, but outside only minor scratches on the sticker which was removed, now they say because they don't see any big scratches i can use the helmet and it shows i didn't crash. (just to show you how "stupid" they act like).