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Method for preparing aluminum based intelligent composite material by ultrasonic welding

A technology of ultrasonic welding and composite materials, which is applied in welding equipment, non-electric welding equipment, manufacturing tools, etc., can solve problems such as fiber Bragg grating sensor failure and fracture, fiber Bragg grating difficulty, residual stress accumulation, etc., to achieve suppression of cross-sensitivity, The effect of high test accuracy and high resolution

Inactive Publication Date: 2010-11-10
NANCHANG UNIV
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AI Technical Summary

Problems solved by technology

[0004] It is very difficult to embed fiber Bragg grating (FBG) sensors in metal substrates, because the thermal stability of fiber Bragg grating (FBG) sensors is poor and easy to break, and the conventional manufacturing method is easy to cause fiber Bragg grating (FBG ) Sensor failure and fracture, etc., the sensor is difficult to withstand high temperature damage, so traditional manufacturing methods are difficult to complete the manufacture of metal matrix smart composite materials

Method used

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Embodiment Construction

[0025] Method steps of the present invention are as follows:

[0026] (1) Cutting 6061 aluminum alloy foil: use metal shearing equipment to cut 6061 aluminum alloy foil into a geometric shape of 160mm×18mm×0.3mm, and use alcohol for better bonding strength of the interface. Wipe for a cleaner bonding surface.

[0027] (2) Fiber Bragg Grating (FBG) metal coating pre-protection: Use alcohol to wipe the bare Fiber Bragg Grating (FBG) to increase the interface bonding strength, and directly embed it in the aluminum matrix without metal coating protection for the Fiber Bragg Grating (FBG); use The method of electroplating after electroless nickel plating protects the fiber Bragg grating (FBG) and then embeds it in the aluminum substrate, and the coating thickness is preferably controlled at 150-170 μm.

[0028] (3) Tetrafluoroethylene soft capillary protection connector: Put a tetrafluoroethylene soft capillary tube with the same inner diameter as the fiber diameter on the lead-ou...

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Abstract

The invention relates to a method for preparing an aluminum base intelligent composite material by ultrasonic welding. The method is characterized by comprising the following steps of: (1) intercepting an aluminum alloy foil; (2) pre-protecting an optical fiber Bragg grating (FBG) metal coating; (3) carrying out joint protection on a tetrafluoroethylene soft capillary; (4) adjusting an ultrasonic metal welding equipment parameter; and (5) embedding an FBG with sensing property by ultrasonic welding. The invention has the advantages that an optical fiber grating sensor embedded into a metal matrix by ultrasonic welding improves the high temperature resistance and the corrosion resistance of a sensor and has a favorable protecting function on the optical fiber grating; and the metal based intelligent composite material manufactured by ultrasonic welding effectively inhibits the cross sensitivity of the FBG, plays a role of temperature sensitivity improvement and obtains a temperature sensor with higher resolution and test precision.

Description

technical field [0001] The invention relates to a method for preparing an aluminum-based intelligent composite material, in particular to a method for preparing an aluminum-based intelligent composite material by ultrasonic welding. Background technique [0002] Smart materials or structures have the ability of self-perception, self-diagnosis and self-management. Fiber Bragg grating (FBG) sensor has the advantages of small size, light weight, high temperature resistance, corrosion resistance, low energy consumption, strong anti-electromagnetic interference ability, In addition to the advantages of high sensitivity, it also has good spectral characteristics, high reliability, broadband, high data rate, and long transmission distance. It can realize remote diagnosis with the help of optical fiber lines, especially with wavelength-coded absolute value measurement and easy-to-use online array, area array, etc. Multiplexing in topology structure can realize the advantages of dist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/10B23K20/24
Inventor 朱政强张义福
Owner NANCHANG UNIV
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