英语翻译Considerable research studies were carried out to invest

英语翻译
Considerable research studies were carried out to investigate the laser heating process.The analysis of acoustic sensing for laser grooving and cutting was carried out by Sheng and Chryssolouris .They introduced the process control scheme for groove depth and beam breakthrough regulation for laser cutting process.Surface temperature due to a moving laser beam was formulated by Romer and Meijer.They presented two types of approximating functions elating the scanning speed to the maximum surface temperature.Three-dimensional conduction model in relation to laser machining process was introduced by Modest.He predicted the shape of a developing groove that was formed by ablation of material by a stationary as well as moving laser beam.Temperature field during laser forming of sheet metal was examined by Ji and Wu .They employed finite element method when solving the governing equation of heat transfer.They showed that temperature gradient in a depth below the surface increased with increasing of laser power and workpiece thickness while it decreased by laser beam scanning velocity.A dual gas jet laser cutting process involving co-axial and off-axial oxygen gas flows was investigated by Hsu and Molian .They showed the effectiveness of the dual gas-jet in achieving the maximum machining rate without deteriorating the cut quality.The turbulent boundary layer approach allowing chemical reactions for CO2 laser oxygen-assisted cutting process was introduced by Yilbas and Sahin .They showed that heat transfer to the liquid metal decreased with increasing workpiece thickness.The thermal analysis of laser cutting process was studied by Yilbas .He indicated that the mathematical model employed presented the physical phenomena well,with the limit of characteristic distance,striation frequency and striation width,as predicted,agreeing well with the experimental findings.A numerical study for CO2 laser cutting process was carried out by Yilbas .The melting front velocities at different laser output power and workpiece thickness were predicted.

大量的研究进行了探讨声学传感激光开槽和切割进行了由盛及Chryssolouris的激光加热过程分析.他们推出的激光切割工艺槽的深度和光束突破调节过程控制计划.由于移动激光束的表面温度是制定的罗默和梅耶尔.他们提出了两种类型的扫描速度建立关系的最高表面温度的函数逼近.三维传导模型在激光加工过程中就介绍了适度的.他预测通过烧蚀的材料,以及由固定移动激光束形成的显影槽的形状.金属板材激光弯曲成形的过程中温度场进行了检查,姬和吴.他们采用有限元法求解时,传热的控制方程.他们表明,在表面以下的深度的增加而增加激光功率和工件的厚度,同时减少由激光束扫描速度的温度梯度.双气体喷射激光切割的过程,涉及合作的轴向和离轴氧气流量进行了调查许和Molian.他们表现出的双气体喷射的效果,在不切割质量恶化的情况下实现最大加工率.引入由Yilbas和沙欣的紊流附面层的方法,使CO2激光辅助氧气切割过程中的化学反应.他们表明,工件厚度的增加减少的液体金属的传热.激光切割过程的热分析研究由Yilbas.他表示,提出的数学模型的物理现象,特征距离的限制,条纹频率和条纹宽度,作为预测,与实验结果非常吻合.CO2激光切割过程的数值模拟研究进行了熔化前的速度在不同的激光输出功率和工件厚度进行了预测Yilbas.哈哈哈,搜狗翻译.