Tell a friend
Email this page to a friend Close
Your name:
Friend's email:

Dr Dae-Kyu Park

TOPIC:  A study on the tensile properties of CFRP composites using long fiber thermoplastic-direct (LFT-D) process

Authors:  D. K. Park, Y. J. Shin, H. K. Jeung, S. W. Park, J. W. Jung, Y. Park from the Korea Textile Machinery Research Institutein Dongshin.

Presented by Dr Dae-Kyu Park, Director of the Headquarter of R&D at the Korea Textile Machinery Research Institute.


Carbon fiber-reinforced plastic(CFRP) composite materials have been widely used in various industrial fields because have been able to adjust design variables according to the application of the required structure. Thermosetting and thermoplastic resin are used as base material of CFRP composites used for lightweight construction of automotive components. Thermoplastics have several advantage such as no curing and being recyclable compared to thermosetting resin. In this study, CFRP composites were made the Long Fiber Thermoplastic-Direct(LFT-D) process. The LFT-D process includes an in-line production system that directly impregnates a thermoplastic resin, extrudes the composite material, and then molds it. It has taken on increasing the strength and decreasing molding time. Tensile strength characteristics on the mechanical properties of CFRP were analyzed according to parameters of LFT-D based on thermoplastics. In order to analyze the properties of CFRP, the specimens were prepared based on the tensile test standard ASTM 3039 of composite materials after press forming of high pressure. A tensile test was conducted using the universal testing machine and the results were analyzed.

Key words: CFRP, Thermoplastic, LFT-D

Presenter’s resume

Dae-Kyu Park received his Ph.D. degree in mechanical engineering from Yeungnam University, Korea, in 2009. Now he works as the Director of Headquarter of R&D at Korea Textile Machinery Research Institute, Korea.