An ultrasonic testing method for the interface bonding quality of fiber-reinforced titanium matrix composites
An ultrasonic testing and fiber-reinforced technology, which is applied in the direction of analyzing solids, analyzing materials, and instruments using sound waves/ultrasonic waves/infrasonic waves, can solve problems that are difficult to apply, and non-destructive testing methods have not been reported, so as to improve detection sensitivity and realize interface integration Effects of quality control, improved sensitivity and signal-to-noise ratio
Active Publication Date: 2021-05-07
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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Problems solved by technology
At present, the detection of internal defects of titanium alloy forgings using traditional ultrasonic testing technology has been relatively mature, but for the detection of each bonding interface in fiber-reinforced titanium matrix composite parts, the traditional single ultrasonic testing method is difficult to apply
So far, no effective non-destructive testing method for the interface bonding quality of fiber-reinforced titanium matrix composite parts has been reported.
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[0024] The embodiment of the present invention aims at the attached figure 2 The silicon carbide fiber-reinforced titanium-based composite material TC17 overall leaf ring with an outer diameter of Φ432mm is ultrasonically tested. The detection system used is a pulse-echo type water immersion focused ultrasonic C-scan detection system, including ultrasonic flaw detector 1, water Dip focusing probe 2, inspected workpiece 3, water tank 4, automatic scanner 5 and computer 6, see attached figure 1 .
[0025] Carry out ultrasonic testing for the metal / fiber interface of silicon carbide fiber reinforced titanium matrix composite parts, including the following:
[0026] Use a water immersion focusing probe with a frequency of 10MHz, adjust the water path distance of the probe so that the focus falls on the depth of the interface to be inspected, and the water path distance is calculated with reference to the following formula:
[0027]
[0028] In the formula:
[0029] P——Water...
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The invention relates to an ultrasonic testing method for silicon carbide fiber reinforced titanium-based composite material parts, belonging to the technical field of non-destructive testing. The invention aims at the metal / fiber interface between the titanium alloy and the silicon carbide fiber filament for water immersion focused ultrasonic C-scan detection, and adopts the combination of interface signal detection and bottom wave monitoring to carry out defect type identification and bonding quality evaluation, avoiding the Using a single method to detect the possible misjudgment problems caused by the inability to identify the defect type. In this way, the quality control of the interface bonding of silicon carbide fiber reinforced titanium matrix composite parts can be effectively realized. The invention adopts water immersion focused ultrasonic C-scan detection technology for detection, effectively improves detection sensitivity, and realizes automatic imaging of detection results, avoiding traditional manual contact detection with many influencing factors, low detection accuracy, and unintuitive result display, etc. question.
Description
technical field [0001] The invention relates to an ultrasonic testing method for silicon carbide fiber reinforced titanium-based composite material parts, belonging to the technical field of non-destructive testing. Background technique [0002] High thrust-to-weight ratio is an important indicator of future aero-engine performance. While improving engine reliability and maintainability, reducing engine structural weight, improving engine structural efficiency and gas temperature are important ways to increase thrust-to-weight ratio. Due to the advantages of high strength, high service temperature, and good fatigue and creep resistance, fiber-reinforced metal matrix composites have been widely valued by aero-engine research institutions in various countries. Foreign countries have developed a fiber-reinforced titanium-based composite integral leaf ring. This structure has obvious advantages in terms of weight reduction and bearing circumferential load. Compared with the conv...
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IPC IPC(8): G01N29/04
CPCG01N29/04G01N2291/023
Inventor 韩波林立志杨平华刘骁王弘王晓
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS