Laser-assisted joining of carbon fiber reinforced polyetherketoneketone thermoplastic composite laminates
- Authors
- Choi, Insung; Roh, Hyung Doh; Jeong, Woo Nam; Jeong, Hu Young; Suh, Jeong; Yi, Jin-Woo; Um, Moon-Kwang; Oh, Youngseok; Lee, Kwang-Hyeon
- Issue Date
- Dec-2022
- Publisher
- Pergamon Press Ltd.
- Keywords
- A. Polymer-matrix composites (PMCs); B. Thermal properties; E. Heat treatment; Laser joining
- Citation
- Composites Part A: Applied Science and Manufacturing, v.163, pp 1 - 11
- Pages
- 11
- Indexed
- SCIE
SCOPUS
- Journal Title
- Composites Part A: Applied Science and Manufacturing
- Volume
- 163
- Start Page
- 1
- End Page
- 11
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/115243
- DOI
- 10.1016/j.compositesa.2022.107228
- ISSN
- 1359-835X
1878-5840
- Abstract
- Carbon-fiber-reinforced thermoplastic (CFRTP) materials have drawn considerable interest owing to their high strength-to-weight ratio. Laser joining technologies have been reported to join CFRTP to metals or plastic materials. However, the direct laser joining of CFRTP/CFRTP is challenging. Herein, we demonstrated the feasibility of laser direct joining of 2.2-mm-thick CFRTP/CFRTP by laser heat conduction. A thulium fiber laser (1940 nm) was used under the optimal joining conditions of 20 W power (beam diameter = 5.5 mm, approximately) and 3 min laser irradiation time. We observed that an increase in the laser irradiation spots per unit area results in a higher joining strength. The joining strengths of carbon fiber (CF)-polyetherketoneketone (PEKK)/CF-PEKK composites were evaluated by single lap shear tests, and the highest average interlaminar shear strength result was 30.9 MPa. Our study indicates that the laser-assisted joining of CF-PEKK/CF-PEKK laminates is viable and worthy of further exploration for industrial applications. © 2022 Elsevier Ltd
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