Question regarding Delamination

Author	Message
engineer	engineer posted 9 Years Ago HOT Topic Details
Group: Forum Members Posts: 3, Visits: 31	Hello Talkcomposites, I've a question that's recently come up in an exam i sat and i just cannot come to a specific answer. I've gone through all my material to hand and it doesn't mention it. Question was. In a composite material that has been impacted, what makeup will show the largest delamination? 1. Curved 2. Thin 3. Thick I put thin, my thoughts being it'll have a large flex and therefore delaminate further, but i think all three could have arguments for being right. What do you guys think? E Tags curved delaminate delamination thick thin
	Reply Like 5
Reply
Hanaldo	Hanaldo posted 9 Years Ago HOT Post Details
Group: Forum Members Posts: 2.5K, Visits: 28K	Delamination is a bit of a 2-stage process, you've got onset and progression. A curved plane is stronger than a flat plane, and takes a higher amount of energy for delamination onset to occur. But once it has occurred, the delamination progression is higher in a curved laminate. So if I am correct in saying that the question implies that all three laminates have catastrophically delaminated, then the curved laminate will show the largest delamination by area. I've attached a case study that I think sums it up quite well. Figure 9 in particular gives a good visual. Attachments 045502.pdf (1.3K views, 805.00 KB)
	Reply Like 6