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Intelligent metal cantilever beam manufacture method

A manufacturing method and cantilever beam technology are applied in metal material coating process, superimposed layer plating, liquid chemical plating and other directions to achieve the effects of good reliability, small weakening effect, and improved service temperature range

Active Publication Date: 2014-11-19
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of embedding the fiber grating into the substrate by the method of electroless plating combined with electroplating proposed by the present invention has little damage to the fiber grating, and there is no relevant research report on the method of using electroless plating combined with electroplating to implant the fiber grating into the substrate of the cantilever beam

Method used

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  • Intelligent metal cantilever beam manufacture method
  • Intelligent metal cantilever beam manufacture method
  • Intelligent metal cantilever beam manufacture method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: (1) get an optical fiber grating (room temperature central wavelength is 1540.011nm), the optical fiber grating grating part is a bare grating, without any protective layer on the surface; according to the sensitizing solution formula (SnCl 2 2H 2 O is 10g / L; HCl is 40ml / L), activation solution formula (PdCl 2 0.5g / L for HCl; 5ml / L for HCl) to prepare sensitizing solution and activation solution respectively, and activate them after sensitization at 25°C for 15min and 20min respectively; then conduct electroless plating at 90°C Nickel, and then electroplate nickel at 25°C, the current is 6mA, and the electroplating time is 20h, so that the thickness of the nickel plating layer is 20μm; (2) Take a stainless steel beam arm with a size of 100×20×1mm 3 , milling a semicircular groove with a diameter of 0.5mm on the surface where the fiber grating needs to be embedded; (3) Pre-treat the beam arm with the semicircular groove before plating, and place the gratin...

Embodiment 2

[0026] Embodiment 2: (1) get an optical fiber grating (room temperature center wavelength is 1540.018nm), the optical fiber grating grating part is a bare grating, without any protective layer on the surface; according to the sensitizing solution formula (SnCl 2 2H 2 O is 10g / L; HCl is 40ml / L), activation solution formula (PdCl 2 0.5g / L for HCl; 5ml / L for HCl) to prepare sensitizing solution and activation solution respectively, and activate them after sensitization at 25°C for 15min and 20min respectively; then conduct electroless plating at 90°C Nickel, then electroplate nickel at a temperature of 25°C, the current is 6mA, and the electroplating time is 25h, so that the thickness of the coating is 30μm; (2) Take a stainless steel beam arm with a size of 500×30×2mm 3 , Mill a semicircular groove with a diameter of 1.0mm on the surface where the fiber grating needs to be embedded; (3) pre-treat the beam arm with the semicircular groove before plating, place the grating part o...

Embodiment 3

[0027] Embodiment 3: (1) get a fiber grating (room temperature center wavelength is 1540.028nm), the fiber grating grating part is a bare grating, without any protective layer on the surface, according to the sensitizing solution formula (SnCl 2 2H 2 O is 10g / L; HCl is 40ml / L), activation solution formula (PdCl 2 0.5g / L for HCl; 5ml / L for HCl) to prepare sensitizing solution and activation solution respectively, and activate them after sensitization at 25°C for 15min and 20min respectively; then conduct electroless plating at 90°C Nickel, then electroplate nickel at a temperature of 25°C, the current is 8mA, and the electroplating time is 25h, so that the thickness of the coating is 50μm; (2) Take a stainless steel beam arm with a size of 500×30×5mm 3 , milling a semicircular groove with a diameter of 2.0mm on the surface where the fiber grating needs to be embedded; (3) pre-treat the beam arm with the semicircular groove before plating, and place the grating part of the meta...

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Abstract

The invention discloses an intelligent metal cantilever beam manufacture method. A cantilever beam is composed of a beam arm, a stand column and a base. Fiber bragg grating is embedded on the surface of the beam arm after being subjected to chemical plating and electroplating for metallization protection. A semicircular groove is formed in the surface of the beam arm; the fiber bragg grating is embedded through the combination of chemical plating and electroplating; insulating tapes are pasted on the surfaces, requiring no plating layer, of a metal plate before chemical plating and electroplating; the fiber bragg grating is completely embedded into a metallic matrix by controlling the electroplating time and current amplitude; surplus protruding electroplated layers at parts embedded with the fiber bragg grating are polished to form complete planes, and the metal plate recovers to the appearances before the processing of the semicircular groove. According to the invention, the operating process is simple; compared with the cantilever beam of a gluing sensor, the service temperature range is widened; in addition, as the fiber bragg grating is directly embedded into metal, organic cementing is avoided, and the long-term expectation reliability is greatly improved.

Description

technical field [0001] The invention relates to the application technical field of fiber gratings, in particular to a method for manufacturing an intelligent metal cantilever beam. technical background [0002] Smart structure is a kind of structure that can sense the internal or external changes of the matrix structure, and integrates sensing, driving elements and control systems in the matrix. The cantilever beam structure is a typical mechanical model structure. At present, its flexibility is mainly through pasting various sensors on the surface of the cantilever beam, such as temperature, stress and strain, etc. Most of the packaging methods are pasted with organic glue. However, the organic glue itself has problems such as easy aging, slow heat conduction, and large strain transmission errors. In this way, the packaged sensor has certain errors in the measurement of the internal temperature and stress of the cantilever beam. The properties of the cantilever beam sensor...

Claims

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Application Information

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IPC IPC(8): C23C28/02C23C18/18C23C18/32C25D5/02
Inventor 李玉龙温昌金
Owner NANCHANG UNIV