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Method and device for measuring related parameter of underwater laser shock formation

A technology of impact forming and underwater laser, which is applied in the direction of laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problem of insufficient consideration of the impact, and achieve the effect of overcoming the narrow linear zone and the difficulty of high pressure setting

Inactive Publication Date: 2008-11-12
JIANGSU UNIV
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Problems solved by technology

As for the influence of water film thickness on the confinement effect, it is generally not fully considered.

Method used

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  • Method and device for measuring related parameter of underwater laser shock formation
  • Method and device for measuring related parameter of underwater laser shock formation

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Embodiment Construction

[0025] The details and working conditions of the specific device proposed by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] The device for implementing the method of the present invention includes a laser generator 1 , a laser generator control system 15 , a water film thickness adjustment system, a pressure detection system, a constrained layer and an absorbing layer material 6 . Wherein the pressure detection system is composed of a sensor protective film 7, a pressure sensor 8, a base 14, a wire 9, a pressure detection device 17, an oscilloscope 16, and a microcomputer 18. For the detection of the influence of the free water film thickness on the shock wave intensity, the water film thickness adjustment system is composed of a water tank 5 , a drain hole 11 , a drain pipe 13 , and a drain valve 12 , and the constraint layer is water 10 . For the detection of the influence of the thickness of the constrained wa...

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Abstract

An apparatus for measuring the parameters associated with underwater laser impact shaping is composed of laser generator and its control system, water film thickness regulating system, pressure detecting system, restricting layer and absorptive-layer material. Its method includes such steps as generating laser pulses, emitting them via restrictive layer onto the absorptive layer coated on the protecting film of sensor, evaporating and ionizing the absorptive layer to generate impact waves, transferring them via protecting film to sensor for generate electric signal, detecting and amplifying, converting, displaying the pressure curve of impact waves on oscilloscope, analyzing the influence of water film to the parameters of impact waves, and determining optimal thickness of water film.

Description

technical field [0001] The present invention relates to the field of rapid prototyping, in particular to a method and device for measuring relevant parameters in underwater laser shock forming based on laser shock wave technology using water or glass (and transparent film)-water as a constrained layer, applicable to various types of Laser shock forming of liquid as constrained layer or shock wave transmission medium. Background technique [0002] Due to the shock wave effect of laser, theoretical and applied research on rapid prototyping based on shock wave technology is generally carried out at home and abroad. Because the laser pulse is very narrow and the action time is extremely short, the effective action time of the corresponding shock wave is also very short, which is not conducive to the forming of the workpiece. To solve this problem, the constrained layer technology is generally used. Among them, it is practical to use water as a constrained layer. The usual metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/42B23K26/12B23K26/18B23K26/00B23K26/122B23K26/70
CPCB23K26/0069B23K26/356
Inventor 张永康顾永玉
Owner JIANGSU UNIV
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