Ultrasonic detection method for interface bonding quality of fiber reinforced Ti-matrix composite
A technology of ultrasonic testing and fiber reinforcement, which is applied in the direction of analyzing solids, analyzing materials, and instruments using sound waves/ultrasonic waves/infrasonic waves. Detection sensitivity, avoiding the effect of many influencing factors
Active Publication Date: 2019-02-15
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 detection method for silicon carbide fiber reinforced Ti-matrix composite articles, and belongs to the technical field of non-destructive testing. The inventionperform an ultrasonic immersion C-scan detection on a metal / fiber interface between the titanium alloy and the silicon carbide fiber, and perform the defect type identification and bonding quality evaluation by combining interface signal detection and bottom wave monitoring, thereby avoiding a misjudgment problem that the defect types cannot be identified by adopting a single method. Therefore, the interface bonding quality control of the silicon carbide fiber reinforced Ti-matrix composite articles is effectively realized. The method adopts the ultrasonic immersion C-scan detection technology, effectively improves the detection sensitivity, realizes the automatic imaging of the detection results, and avoids the problems that the conventional manual contact detection has many influencing factors, low detection precision, and unintuitive result display.
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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Login to View More 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