I have many ideas but lack the knowledge needed. (Self studying.)
- I am looking for what materials can take a high stress load flex and release like a spring, but light weight.

Also what shapes may give me the most structural integrity and energy return?

-What materials may give me a small amount of flexion under a high stress high impact, but maintain its shape?

Example- CF is hard strong and tough but S-glass has more yield strength.

UHMWPE cloth is strong and stops bullets, but will it outperform In General to CF or S-glass? And I am sure there are plastics I have not even heard of that may offer better options.