System for measuring pressure response time of pressure sensitive paint by shock wave method

A technology of pressure-sensitive coating and response time, which is applied in the direction of material excitation analysis, fluorescence/phosphorescence, etc., to achieve the effect of convenient comparison and simple collection

Inactive Publication Date: 2012-07-04
SHENGYANG AERODYNAMIC INST AVIATION IND CORP OF CHINA
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  • Application Information

AI Technical Summary

Benefits of technology

This patented method allows for accurate measurements from different types of sensors without having any significant changes over their performance or even causing damage during testing.

Problems solved by technology

This patented technical problem addressed in this patents relates to testing different types of materials called “pressure sensitive” painters during their use under specific conditions such as lightning strikes, explosions, firefighthalls, and other weather events without causing any damage from external influences like rainwater.

Method used

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  • System for measuring pressure response time of pressure sensitive paint by shock wave method
  • System for measuring pressure response time of pressure sensitive paint by shock wave method
  • System for measuring pressure response time of pressure sensitive paint by shock wave method

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Embodiment Construction

[0020] Shock wave method pressure-sensitive paint pressure response time measurement system, including a shock wave generator 1, a test piece test plate 2 for spraying pressure-sensitive paint, and an element dynamic pressure sensor for detecting the speed of the shock wave sweeping across the test plate 3. Light source UV flash lamp for generating excitation light 4, equipment CCD camera for collecting pressure-sensitive paint images 5, shock wave generator running track slider 6, component stopper for blocking shock wave generator movement before the test 7. The driving motor of the power equipment used to remove the stopper of the shock wave generator during the test test. The component spring 9 that makes the shock wave generator generate an initial speed is used to decelerate the shock wave generator and make it slow down at the end of the test. Component shock absorber 10 for stopping motion. The test plate 2 is sprayed with the pressure-sensitive paint to be tested, and...

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Abstract

The invention discloses a system for measuring the pressure response time of pressure sensitive paint by a shock wave method, consisting of a shock wave generator, a test panel, a dynamic pressure sensor, an UV (Ultra Violet) flashlight, a CCD (Charge Coupled Device) camera, a slide bar, a stop dog, a driving motor, a spring and a damping device. The shock wave generator is arranged on the slide bar on the back surface of the test panel and fixed on the back surface of the front end of the test panel along the direction of airflow through the stop dog. In a supersonic velocity wind funnel environment, the measurement of the pressure response time of the pressure sensitive paint is realized by utilizing the shock wave method; in the test, the stop dog in front of the shock wave generator is removed by the driving motor; the shock wave generator moves toward the downside of the airflow along the slide bar under the action of the spring and the airflow, so as to ensure that shock wave scans over the dynamic pressure sensor and the pressure sensitive paint on the surface of the test panel; and a test image is obtained via the CCD camera. By the system, the characteristic indexes of the pressure response time of the pressure sensitive paint can be simply and reliably measured.

Description

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Claims

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Application Information

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Owner SHENGYANG AERODYNAMIC INST AVIATION IND CORP OF CHINA
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