Analysis of High-energy Laser Irradiation Effect on a Half-cylindrical Steel Structure under Airflow
Year: 2025
Type: article
Abstract: In this paper, the damage of a semicircular steel structure specimen simulating a threat when irradiated with a high-energy laser under airflow conditions was analyzed by experiments and numerical analysis. The laser used in this experiment was a CW fiber laser with a wavelength of 1.07 ㎛ and irradiated the specimen within a maximum power of 10 kW. For quantitative analysis of the laser effect, a high-speed camera and a thermal imaging camera were used to acquire the melt-through time and temperature evolution of the specimen, respectively. Along with the experiment, numerical analysis of the experimental conditions was also performed using COMSOL Multiphysics, a commercial code. In addition to the semicircular steel structure, an air domain was added to simulate airflow, and a top-hat shape distribution was applied for beam energy distribution. Two different beam absorption rates were applied to the steel material to compare the temperature distribution of the experimental results, respectively.
Institution: Agency for Defense Development
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4409202709