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Local fast heating experimental device for novel ultra-high temperature ceramic test piece

A technology of ultra-high temperature ceramics and experimental devices, which can be used in measurement devices, instruments, scientific instruments, etc., can solve problems such as material damage, structural component failure, crack generation, etc., to achieve the effect of good mechanical properties research

Inactive Publication Date: 2017-05-10
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under harsh high-temperature conditions, although ultra-high-temperature ceramic materials can maintain high strength at high temperatures, they will generate cracks and expand rapidly under thermal shock conditions caused by temperature changes, resulting in material damage. lead to failure of structural components

Method used

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  • Local fast heating experimental device for novel ultra-high temperature ceramic test piece
  • Local fast heating experimental device for novel ultra-high temperature ceramic test piece
  • Local fast heating experimental device for novel ultra-high temperature ceramic test piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]A new type of local rapid temperature rise experimental device for ultra-high temperature ceramic specimens, which consists of: a computer 4, a thermocouple 2, and a copper electrode 1, and the left and right sides of the copper electrode 1 are respectively connected to the amplified voltage U0 Positive and negative, the amplified voltage U 0 The positive pole and the negative pole of the amplifying circuit are respectively connected to the positive pole and the negative pole of the amplifying circuit, and the amplifying circuit is connected to the input voltage U i positive and negative poles of

[0041] Described copper electrode 1 connects thermocouple 2 (the length of copper electrode is determined according to the size of experimental sample), and described thermocouple 2 is placed in the measuring range of infrared thermometer 3, and described infrared thermometer 3 Connect to the computer 4 through a data cable;

[0042] The amplifying circuit is powered by a DC...

Embodiment 2

[0044] A new type of ultra-high temperature ceramic test piece local rapid temperature rise experimental device described in embodiment 1, the described DC power supply includes a power transformer, the described power transformer transmits the voltage to the rectifier circuit through the wire, and the described rectifier circuit transfers the voltage The transmission filter circuit transmits the voltage to the voltage stabilization circuit through the wire, and the voltage stabilization circuit transmits the voltage to the amplification circuit through the wire.

Embodiment 3

[0046] A novel local rapid temperature rise experimental device for ultra-high temperature ceramic specimens described in Example 2, the power transformer receives an AC voltage through a wire, and the AC voltage transmits the voltage to a bridge rectifier circuit through a wire;

[0047] One end of the bridge rectifier circuit is connected in parallel with one end of the capacitor C and one end of the resistor R, the other end of the bridge rectifier circuit is connected in parallel, the other end of the capacitor C, the diode D Z one end and the resistor R L one end of

[0048] The other end of the resistor R is connected in parallel with a diode D Z the other end and the resistor R L the other end of the

[0049] Use process:

[0050] Step 1: first put the test piece used in the test into the copper electrode 1 .

[0051] The second step: connect the infrared thermometer 3 to the computer 4 through the data cable.

[0052] Step 3: Connect the power.

[0053] Step 4: ...

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PUM

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Abstract

The invention relates to a local fast heating experimental device for a novel ultra-high temperature ceramic test piece. The local fast heating experimental device is characterized in that a positive pole and a negative pole of amplified voltage U0 are connected to the left and right sides of a copper electrode respectively and is connected with a positive pole and a negative pole of an amplifying circuit respectively, the amplifying circuit is connected with a positive pole and a negative pole of input voltage Ui, the copper electrode is connected with a thermocouple which is placed within a measurement range of an infrared thermometer, the infrared thermometer is connected with a computer through a data line, and the amplifying circuit is used for supplying power through a direct-current source. The local fast heating experimental device is used for local fast heating of the ultra-high temperature ceramic test piece.

Description

[0001] Technical field: [0002] The invention relates to a novel experimental device for local rapid temperature rise of an ultra-high temperature ceramic specimen. [0003] Background technique: [0004] Hypersonic weapons with hypersonic speed, high maneuverability and long-distance precision strike as the main technical features have become a military hotspot in the world, and will bring a revolution to the concept and mode of future warfare. It is no exaggeration to say that the emergence of hypersonic aircraft will have a profound impact on human life. With the rapid development of my country's aerospace technology, aerospace vehicles capable of long-term hypersonic flight have become the focus of my country's future aircraft. Hypersonic vehicles can effectively reduce defense response time, enhance penetration and counter-defense capabilities, and expand the range of launch platforms. Improve the survivability, combat effectiveness and efficiency of aircraft, and hyperso...

Claims

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Application Information

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IPC IPC(8): G01N3/60
CPCG01N3/60G01N2203/0057
Inventor 刘宝良冯晓艳李长青孙立红
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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