Portable outdoor ultrasonic infrared excitation device

Abstract

The invention discloses a portable outdoor ultrasonic infrared excitation device. The portable outdoor ultrasonic infrared excitation device comprises a mounting platform, a plurality of telescopic support rods are arranged on the mounting platform, a hanging telescopic rod is fixed in the middle of the mounting platform, a thermal infrared imager is fixed on the hanging telescopic rod, a verticalsliding rail is also fixed in the middle of the mounting platform and is parallel to the hanging telescopic rod, a clamp is arranged on the vertical sliding rail, position of the clamp on the vertical sliding rail can be adjusted, and an excitation probe is fixed on the clamp. The portable outdoor ultrasonic infrared excitation device is simple, portable and free from restrictions of indoor conditions, and has the advantages that contact pressure, shooting position, shooting angle, excitation position of the ultrasonic excitation probe can be adjusted and the like, close contact with a to-be-tested sample can be ensured, and accuracy of experimental results can be increased.

Description

technical field [0001] The invention relates to the field of fatigue crack damage detection of large steel structures based on ultrasonic infrared thermal wave detection technology, in particular to a portable ultrasonic infrared excitation device for outdoor use. Background technique [0002] Steel structures are widely used in aerospace, machinery, bridges, construction, marine engineering, automotive structures and other fields due to their good physical properties such as high strength, uniform material, good plasticity and toughness. However, due to the existence of alternating loads, concentrated stress and welding defects, large-scale steel structures will inevitably have corresponding fatigue crack damage in the actual use process, among which weld fatigue cracks are the most common and dangerous, according to the crack in the weld The different positions of the cracks can be divided into surface cracks and internal cracks. The surface cracks are the most common and ...

AI Technical Summary

Problems solved by technology

However, due to the existence of alternating loads, concentrated stress and welding defects, large-scale steel structures will inevitably have corresponding fatigue crack damage in the actual use process, among which weld fatigue cracks are the most common and dangerous, according to the crack in the weld The different positions of the cracks can be divided into surface cracks and internal cracks. The surface cracks are the most common and most harmful defects, and they mostly occur in key parts of the engineering field. Once a safety accident occurs, it will cause immeasurable losses and consequences.

Images