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Hanaldo - 10/27/2020 1:55:19 AM

Would need to know more about the application, from what you've told us either adhesive would be fine. When bonding dissimilar materials, elongation is an important part of the adhesives properties, but semi-flexible structural epoxies like Araldite 2015-1 would be very good. In fact you can even get structural epoxies that you can tie in a knot they are so flexible. Car manufacturers will also use epoxies and polyurethanes to bond windscreens and other parts of the car, so it isn't as black and white as that.

What sort of vibration do you expect in the application? What sort of temperature cycles will it need to withstand? Is the bonded structure increasing the rigidity of the composite panel, like an I-beam, or is it purely an assembly joint?