Wouldn't there be stress put on the rest of the tub during the accident? Micro cracks? How would they deal with that?

 

sorry to resurrect an old thread, but i came across something recently that made me remember this.

at the time i saw these pictures, i was with most people on here in thinking that the repair on this CGT-- while impressive-- couldn't be as good as factory, because i always believed that an autoclave was needed for "real" structural dry carbon. i do NOT have any CF or engineering background, so i was only going by what i'd read.

but then this article and others similar appeared, and it looks like Lamborghini are fixing Aventador tubs in a way very similar to the way in which this CGT was fixed.

How to Fix a Lamborghini Aventador Monocoque - WOT on Motor Trend

assuming the guys that did the work are indeed CF experts (and i have no reason to believe one way or the other, apart from what was said in the thread,) this would suggest that the repaired CGT could indeed be as good as new?

thoughts?

 

It was discussed on the RL thread, and it was alluded to in this thread, but the folks working on the CGT were not hack job mechanics. They were professionals w/ significant experience in carbon fiber construction and repair on performance sail boats. So it seems appropriate that Lamborghini's in-house professionals would use similar tools and techniques to repair carbon fiber.

 

this is.. upsetting

 

The fellows doing these repairs look to have done some remarkably intelligent things, to wit: The original core material, visible as sort of maple syrup-brown hex-cellular stuff, was wisely replaced with either Klegecell or Divinicell foam core. HexCell, while extremely light and strong, is virtually unrepairable, and is notoriously low in peel strength (the ability to bond, or cross-link, with the adjacent fabric layer[s]). It also cannot be given small-radius shapes, such as required here. Look closely, and you will see not even Porsche took the HexCell to the radius, using fairing putty instead. The gentleman here used a very strong, very stiff closed-cell core, which he faired (shaped) to a degree Porsche would approve. He also carefully removed the damaged carbon plies one layer at a time, leaving himself a neatly "stepped" area to be re-laminated. Quite a well thought-out repair, well executed. I would have absolutely no qualms about this repair from an engineering standpoint. The result here should reasonably be expected to exceed the original structure's strength and integrity, including the part's ability to withstand any future unhappy events. Good job.