Here’s a de-technologized device for the non-destructive testing of the Young’s modulus of a material. The device works by hitting the material to be tested with a screw swinging on a thread. The energy from the collision of the screw and the material is transfered to another screw on the opposite side of the material. The difference in the swing angles of the two screws can give you the coefficient of restitution of the material with respect to the screws. The coefficient of restitution is a function of the Young’s modulus of the two materials.
