The characteristics of plumes during continuous wave laser irradiation of laminated carbon fiber reinforced plastics (CFRP) under tangential air flow or nitrogen gas flow are investigated. The temperature of the plume is measured by the infrared thermal imager. The change in relative mass concentration of the plume is studied by the laser extinction method. The front surface emissivity-corrected temperature maps of CFRP are measured by the infrared thermal imager to estimate the influences of plumes. The highest temperature in the plume is closely related to the absorption of the laser by the plume rather than the combustion effects of the plume. The differences of the plumes, temperature, the material surface temperature and the heat affect zone, under the two different kinds of gas flows, are all due to the effect of the burning of the plume under air flow. As the mass concentration of plumes decreases, these differences gradually disappear or no longer increase. The results o...

中文翻译：

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切向气流下连续激光-CFRP相互作用中羽流的特性及其影响

研究了碳纤维增强塑料（CFRP）在切向气流或氮气流下连续波激光辐照过程中的羽流特性。羽流的温度由红外热像仪测量。通过激光消光方法研究了烟羽相对质量浓度的变化。红外热像仪测量了CFRP的经表面发射率校正的温度图，以估算羽流的影响。羽流中的最高温度与羽流对激光的吸收密切相关，而不是羽流的燃烧效果。在两种不同的气体流量下，羽流，温度，物料表面温度和热影响区的差异，都是由于气流下烟流燃烧的影响。随着羽流的质量浓度降低，这些差异逐渐消失或不再增加。结果还是...