Abstract

Glass fiber reinforced plastic (GFRP) with functional coatings is applied more and more in aircraft, thanks to its light weight and excellent mechanical properties. However, the outermost coating must be removed duo to discoloration, paint dropping, cracking, pits, or other fatigued phenomena after a certain amount of service time. The outermost torn coating on a GFRP material is successfully stripped with a nanosecond laser source. The influences of key laser parameters such as laser power, pulse overlap, and pulse width are studied. Thereafter, an optimized laser processing window is obtained and further validated with specified characterization methods. The repainting and adhesive bonding tests afterward indicate that a laser stripping process is superior to traditional sandpaper polishing because of the effects of surface roughening and microstructure interlocking. A case study further suggests that laser stripping outperforms sandpaper polishing because of its higher efficiency and better quality.

© 2022 Optica Publishing Group

Surface quality of laser paint removal of marine steel: a comparative study using a Gaussian beam and a flat-top beam

Yanqun Tong, Jianfeng ShangGuan, Xudong Ren, Aihua Yuan, Jianfeng Liu, Zhaohua Lian, Xiaocai Hu, Jian Ma, Zhen Yang, and Dongfang Wang
Appl. Opt. 61(9) 2237-2246 (2022)

Enhanced 2D finite element model and its application in laser cutting of carbon fiber reinforced plastic composites

Yao Lu, PeiYing Gao, Jianan Xu, Yang Wang, and LiJun Yang
Appl. Opt. 61(28) 8533-8539 (2022)

Strain measurement in a concrete beam by use of the Brillouin-scattering-based distributed fiber sensor with single-mode fibers embedded in glass fiber reinforced polymer rods and bonded to steel reinforcing bars

Xiaodong Zeng, Xiaoyi Bao, Chia Yee Chhoa, Theodore W. Bremner, Anthony W. Brown, Michael D. DeMerchant, Graham Ferrier, Alexander L. Kalamkarov, and Anastasis V. Georgiades
Appl. Opt. 41(24) 5105-5114 (2002)

Effect of laser cleaning of carbon fiber-reinforced polymer and surface modification on chemical activity and bonding strength

Yanqun Tong, Xin Chen, Ang Zhang, Yonghong Fu, Xudong Ren, Yunxia Ye, and Shanshan Xin
Appl. Opt. 59(32) 10149-10159 (2020)

Study on the characteristics and mechanism of pulsed laser cleaning of polyacrylate resin coating on aluminum alloy substrates

H. C. Zhao, Y. L. Qiao, Q. Zhang, X. Du, Y. Zang, X. T. Liu, and B. Y. Han
Appl. Opt. 59(23) 7053-7065 (2020)