An ultrasonic flaw detection test block for blade detection

Abstract

The invention discloses an ultrasonic flaw detection test block for blade detection. The test block can simulate the actual situation that ultrasonic waves are transmitted and reflected in a blade in ultrasonic flaw detection. The inner flaws of blade parts can be calibrated in ultrasonic detection, and the sensitivity can be determined. The test block comprises an A type blade test block and a B type blade test block. The materials, structures and sizes of the A type blade test block and the B type blade test block are the same as those of a detected blade. A first artificial defect and a second artificial defect are arranged on parts (A1, A2) of the back of the A type blade test block, wherein the distance between the parts (A1, A2) and the edge of the A type blade test block is not greater than the non-detection zone distance. A third artificial defect is arranged on the geometric center of the back of the A type blade test block. A fourth defect and a fifth defect are arranged on the parts (B1, B2) of the basin surface of the B type blade test block, wherein the distance between the parts (B1, B2) and the edge of the B type blade test block is not greater than the non-detection zone distance. A sixth artificial defect is arranged on the geometric center of the basin surface of the B type blade test block.

Description

technical field [0001] The invention relates to an ultrasonic flaw detection test block, in particular to an ultrasonic flaw detection test block for blade detection. Background technique [0002] The blade is the main moving part of the engine, the manufacturing process is complex, and it is prone to manufacturing defects; at the same time, it is often subjected to complex alternating loads and impacts in the use environment, and is prone to fatigue cracks. In order to ensure the safety of the blades, ultrasonic testing is required. However, blades usually have complex shapes and large curvature changes. During ultrasonic testing, the propagation and reflection of sound waves are greatly affected by the shape and curvature. The actual situation. Therefore, it is difficult for the conventional flaw detection test block used in ultrasonic testing to realize the calibration of internal defects and the determination of sensitivity for ultrasonic testing of blade parts. Cont...

AI Technical Summary

Problems solved by technology

However, blades usually have complex shapes and large curvature changes. During ultrasonic testing, the propagation and reflection of sound waves are greatly affected by the shape and curvature. The actual situation

Therefore, the conventional flaw detection test block used in ultrasonic testing is difficult to calibrate internal defects and determine the sensitivity of ultrasonic testing of blade parts.

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