A Radar Wave Nondestructive Testing Method for Internal Defects of Ancient Building Wooden Columns

Abstract

The invention provides a radar wave-based nondestructive test method for internal defects of wooden pillars of an antique building. The method comprises the following steps: putting a radar wave-based detection device on an initial detection point of a first unit region, detecting all unit regions in a group upwards one by one from the unit detection region, performing once complete circular scanning during detection of each unit region, recording detection data in real time, gathering all the collected detection data, processing and analyzing, generating internal detection images of the wooden pillars in the detection region of the group, and judging whether the wooden pillars have internal defects or not according to the generated images; if all the unit regions do not have internal defects, directly determining the nature; if the unit regions have internal defects, further judging whether the detected internal defects are completely displayed or not, and performing out-diffusion subsequent detection on the internal defects which are not completely displayed until the internal defects are completely displayed; finally obtaining a qualitative detection result. The method is capable of rapidly and accurately detecting whether defects of holes, purification and the like exist in the wooden pillars of the antique building or not in site and judging the positions and sizes of the defects.

Description

technical field [0001] The invention relates to a radar wave non-destructive detection method for internal defects of wooden columns of ancient buildings, belonging to the field of wood science and technology. Background technique [0002] The defects of load-bearing wooden columns in ancient wooden structures play a vital role in the safety of the overall wooden structure. When the load-bearing wooden columns are severely decayed, they will directly lead to the collapse of the building, which brings serious safety hazards to pedestrians and cultural relics. . In the past, the safety survey of wooden columns in ancient buildings was mainly judged by empirical methods such as visual inspection and knocking. Since the load-bearing wooden columns of ancient wooden structures are mostly large-diameter wood and there are many painted paintings on the surface of the wooden columns, the interior is rotten. , cavities and other defects may not be detected in time by relying on empi...

AI Technical Summary

Problems solved by technology

[0002] The defects of load-bearing wooden columns in ancient wooden structures play a vital role in the safety of the overall wooden structure. When the load-bearing wooden columns are severely decayed, they will directly lead to the collapse of the building, which brings serious safety hazards to pedestrians and cultural relics.

In the past, the safety survey of wooden columns in ancient buildings was mainly judged by empirical methods such as visual inspection and knocking. Since the load-bearing wooden columns of ancient wooden structures are mostly large-diameter wood and there are many painted paintings on the surface of the wooden columns, the interior is rotten. , cavities and other defects may not be detected in time by relying on empirical methods, and it is difficult to judge the overall safety of the structure

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