@Article{cmes.2023.027072,
AUTHOR = {Yin Li, Yuanjia Song, Zhengwei Yang, Haijun Jiang, Bowen Liu},
TITLE = {Temperature Field in Laser Line Scanning Thermography: Analytical Calculation and Experiment},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {137},
YEAR = {2023},
NUMBER = {1},
PAGES = {1001--1018},
URL = {http://www.techscience.com/CMES/v137n1/52321},
ISSN = {1526-1506},
ABSTRACT = {The temperature field in laser line scanning thermography is investigated comprehensively in this work, including
analytical calculation and experiment. Firstly, the principle of laser line scanning thermography is analyzed. On
this basis, a physical laser line scanning model is proposed. Afterwards, based on Fourier transform (FT) and
segregation variable method (SVM), the heat conduction differential equation in laser line scanning thermography
is derived in detail. The temperature field of the composite-based coatings model with defects is simulated
numerically. The results show that the laser line scanning thermography can effectively detect the defects in the
model. The correctness of the analytical calculation is verified by comparing the surface temperature distribution
obtained by analytical calculation and numerical simulation. Additionally, an experiment is carried out and the
changeable surface temperature obtained by analytical calculation is compared with the experimental results. It
shows that the error of maximum temperature obtained by analytical calculation and by experiment is 8% with
high accuracy, which proves the correctness of analytical calculation and enriches the theoretical foundation of
laser line scanning thermography.},
DOI = {10.32604/cmes.2023.027072}
}