The influence of temperature and surface conditions on surface absorptivity in laser surface treatment

Jin Tang Wang, Cheng I. Weng, Jee Gong Chang, Chi Chuan Hwang

研究成果: Article同行評審

38 引文 斯高帕斯(Scopus)

摘要

A one-dimensional, transient, inverse heat conduction problem is implemented to investigate the influence of temperature and surface conditions on surface absorptivity in the laser surface heating process. Analysis includes the utilization of the conjugate gradient method (CGM), with temperatures measured near the heated surface. To increase efficiency and accuracy of the calculation, the result retrieved from the least-square method is used as an initial guess for the CGM. Results show that absorptivity decreases when the temperature exceeds a certain value. This decrease is related to structural transformation during the temperature rise. As the surface temperature nears the melting point, the decreasing trend inverts and absorptivity increases. This final abrupt rise is caused by the phase transformation from order to disorder. Additionally, absorptivity is related to surface conditions such as absorption-enhancing coatings and surface roughness.

原文English
頁(從 - 到)3245-3253
頁數9
期刊Journal of Applied Physics
87
發行號7
DOIs
出版狀態Published - 2000 四月

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

指紋

深入研究「The influence of temperature and surface conditions on surface absorptivity in laser surface treatment」主題。共同形成了獨特的指紋。

引用此