Three-Dimensional Temperature Field of Material Irradiated by Continuous Wave Laser

Power density analysis and experimental verification of shaped Gaussian laser field

“…The light intensity distribution in the light spot can be described more accurately through the analytical function. Using the curve fitting toolbox of MATLAB, the brightness distribution curve is fitted using the Gaussian curve function shown in formula (1), and the result is shown in Figure 1. The radius R1 obtained by fitting the waveform curve is 0.539mm, and the Gaussian analytical function is expressed as:…”

“…In the field of laser thermal processing of materials, the establishment of the temperature field model of laser heating materials is the basis for accurate analysis and design of laser applications [1]. For the shaped Gaussian laser field, deriving the analytical model of the power density field within the range of its far-field beam is the premise of accurately establishing the temperature field.…”

Study on laser irradiation temperature field of carbon fiber reinforced plastic composites

“…The anisotropy of composite materials has a significant impact on the distribution of temperature field. Zhang Yingcong [4] calculated the transient temperature field of anisotropic materials by means of integral transformation, and found that the anisotropy of materials leads to asymmetric temperature rise. Ohkubo [5] conducted a three-dimensional numerical simulation of the laser processing of CFRP materials, and studied the difference between the melt removal rates of carbon fibers and resins.…”

Building of Laser-assisted Micromachining Temperature Field

“…And experiment testified LAMM can effectively reduce material strength, decrease cutting force, enhance material ductility, made processed surface more smooth, which can be seen in figure 2, and made chips from break chips into continuous chips, which can be seen in figure 3. Temperature field is the main physical characteristic appeared after laser heating materials [3], temperature control is the key of LAMM [4], it directly determines whether high precision, good surface quality products can be produced or not. Overheating will cause material burnt, impact the processed workpieces surface quality, and underheating will greatly reduce the effect of laser-assisted, so it is critical to determine how the temperature changes and distributes, and get accurate temperature parameters after the material heated by laser.…”