Application News No. V24M
3D-DIC Analysis of CFRP Subjected to Collision with a High Speed Flying Object
Of all composite materials, Carbon Fiber Reinforced Plastic (CFRP) is particularly superior in terms of specific strength and specific rigidity. As a result, it is used in aircraft and some transportation equipment in order to improve fuel efficiency by reducing weight. However, the exhibition of superior mechanical properties is limited by the orientation of the fibers in CFRP laminate boards. It is known that interlaminar strength is low, as is the strength in a direction orthogonal to the fibers. In considering its use in transportation equipment, an (interlaminar) impact load may be applied from the outer surface of the laminate board by hail and scattered stones. For this reason, collision tests with high-speed flying objects are a very important type of test. Even if external damage to the CFRP laminate board cannot be confirmed after the collision test, there may be internal damage since the interlaminar strength is low. Accordingly, in order to evaluate the impact properties of CFRP, it is necessary to check how the CFRP laminate board was deformed at the time of the impact, and what sort of internal damage was produced.
DIC analysis is effective for measuring the strain distribution of a specimen. Synchronized imaging is required from two directions in order to measure the 3D strain distribution. This article introduces an example of the evaluation of the deformation of CFRP due to collision with a high-speed flying object. 3D-DIC analysis is applied, using two high-speed video cameras.
Learn more about 3D-DIC solutions & high-speed imaging:
Contact a Hadland Imaging representative to learn more and visit our page on DIC Solutions (digital image correlation) for more information about testing machines, high-speed cameras & everything you need to get the job done right.
Keywords: Shimadzu Hyper Vision HPV-X2, 3D-DIC