Effect of ply scheme on ablation characteristics of carbon fiber composites under CW laser irradiation

摘要

The irradiation effects are studied, of continuous wave (CW) laser on five types of laminated carbon fiber composites(CFRP), [0/90/0/90], [0/90/90/0], [0/45/90/135], 1.5K-Textile ([1.5K/0°/90°/1.5K]) and 3K-Textile ([3K/0°/3K]). Theply scheme of CFRP is especially considered in the proposed 3D model. The numeirical results show that the structure ofCFRP has significant influences on the temperature evolution and the heat affect zone (HAZ). The non-monotonictemperature rising at the material surface exposed to the laser radiation are associated with the heat flux in the laminatedstructure. The HAZ in the adjacent layers is discontinuous. The pyrolysis inside the CFRP is more serious than the oneon the laser irradiation surface. The numerical predictions indicate that the material with [0/45/90/135] has the optimumthermal insulation performance. This kind of ply scheme could promote lateral heat transfer and weaken longitudinalheat transfer. 3K-Textile has optimal ablation resistance. It is associated with the 3K-Textile layer having the maximumlongitudinal thermal conductivity.