In-situ observation method for laser-induced ultrahigh-temperature ablation under high-speed airflow

• Main Authors: YUAN WU, MA TE, WANG RUIXING, SONG HONGWEI
• Format: Patent
• Language: Chinese; English
• Published: 21.03.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention provides an in-situ observation method for laser-induced ultrahigh-temperature ablation under high-speed airflow, which mainly comprises the following steps of: (1) constructing an in-situ measurement system, and acquiring a physical image of a dynamic ablation behavior of a laser irradiation surface; (2) building a high-energy laser and high-speed wind tunnel combined test device; and (3) carrying out data mining on the dynamic ablation physical image through an image processing method, and obtaining instantaneous ablation depth data. According to the invention, the clear dynamic ablation process of the laser irradiation surface of the material can be obtained, and the problem that physical imaging and dynamic measurement of laser-induced thermochemical ablation and mechanical denudation effect ablation characteristics cannot be realized in a complex wind tunnel environment in the prior art is solved. And test data with better supporting performance and verification performance is provided for