Evaluation of Wrinkling and Mechanical Properties in Partial Bend-Forming of Thick CFRTP Laminate

In recent decades, the CFRTP press-forming process has drawn intense research interest because of its use in automobile and industrial equipment. However, it is still very challenging to cost-effectively fabricate large, long, thick parts, such as infrastructure general-purpose structures. Therefore, authors propose partial bend-forming laminates via heating. While potential for low-power heating low-load pressing, this always causes wrinkles bent area. The purpose paper clarify effect area development a new that applies bend-forming. caused by experiment were observed, strength stiffness evaluated 4-point bending test using L-shaped specimens containing wrinkles. Forming simulation was also attempted. It found section with had lower but comparable compared without When running forming simulations wrinkling delamination, definition interlayer separation stress important. results good agreement experimental results.