Laser ablation mechanism and performance of glass fiber-reinforced phenolic composites: An experimental study and dual-scale modelling

• DOI: 10.1016/j.cja.2024.05.042
• Publication Date: 2024-06-03T16:48:28Z
• Authors: Ran BI; Pengfei SHEN; Longyu ZHU; Zhengzheng MA; Chuyang LUO; Yongfeng LI; Lijian PAN
• Keywords: Laser Ablation

Both experimental and simulation approaches were employed to investigate the laser ablation mechanism performances of Glass Fiber Reinforced Phenolic Composites (GFRP). During process, difference in thermal conductivities glass fibers resin matrix as well their discrepant physical chemical reactions form a conical morphology. The formation residual carbon layer effectively mitigates rate thickness direction. A higher power density results faster rate, while longer irradiation time leads larger pit diameter. To account for variation conductivity between fiber resin, macro-mesoscale model was developed differentiate from components. Finite element analysis revealed that phenolic decomposition, melting vaporization, skeleton evaporation. dual-scale exhibits precise prediction capabilities concerning process GFRP, its accuracy is confirmed through comparison GFRP process. This provides feasible method performance evaluation lifetime subjected continuous wave irradiation.