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Airborne Ultrasonic Test System for Test Objects

A technology for test objects and test systems, applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, material analysis using sonic/ultrasonic/infrasonic waves, and measuring devices, etc. Issues such as ringing effects are not displayed

Active Publication Date: 2021-12-14
夏楼激光音响有限责任公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the thermoacoustic generator used in combination with the membraneless optical microphone in the proposed setup does not exhibit the ringing effect typically exhibited by prior art test rigs (see also Fig. 2), but is able to Transmits a very short Dirac-like excitation signal within 1 microsecond

Method used

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  • Airborne Ultrasonic Test System for Test Objects
  • Airborne Ultrasonic Test System for Test Objects
  • Airborne Ultrasonic Test System for Test Objects

Examples

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Embodiment Construction

[0064] figure 1 Shown in is a typical inventive device. The onboard ultrasonic waves 5 are emitted from the thermoacoustic generator 1 a into the air or into another sound propagation medium (eg a specific gas 10 that may be present in the test environment). Such specific gases may include, for example, nitrogen or carbon dioxide or gas mixtures, for example, thorlabs Inc ( https: / / www.thorlabs.de ), which is favored due to the fact that the test object 3 will not be exposed to oxygen, which is also enhanced by the fact that the pressure-related change in the refractive index depends on the medium Sensitivity of diaphragmless and non-resonant optical microphones is preferred. The sound propagation medium can also be any liquid (eg, oil, water, blood or others); however, the efficiency of the thermoacoustic generator is more favorable when used in gas. As a result, the sound propagation medium will generally be ordinary ambient air. Sound waves are incident on the test ob...

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Abstract

The invention relates to an on-board ultrasonic testing system for a test object (3), comprising an ultrasonic generator (1, 9), an ultrasonic receiver (2), a control arrangement for controlling both, and for displaying the A computer-aided test result interface of an image of a test object (3). In an air-coupled or gas-coupled pulse-echo arrangement or in an air-coupled or gas-coupled transmission-mode arrangement, the ultrasound generator (1) is a non-resonant thermoacoustic ultrasound generator that does not rely on mechanically deformable or oscillating components, The ultrasound receiver (2) is a membraneless and non-resonant optical microphone. With this test system it is possible to test test objects with high precision without the need for liquids and without disturbing ringing effects.

Description

technical field [0001] The present disclosure relates to the field of ultrasonic testing. Background technique [0002] current development status [0003] In this section, numbers within [ ] refer to prior art references recorded at the end of Section II. [0004] Non-destructive testing (NDT) methods of determining the mechanical integrity of components without introducing damage have been of great importance in various branches of industry for many years. For various purposes (e.g., comprehensive quality control in manufacturing, inspection in use, or defect assessment and monitoring in use), it is not beneficial to sacrifice test objects in the process ([1]). This inspection is especially critical in the marine, aerospace, automotive industry or construction, where material damage can endanger human safety. [0005] In these branches of industry, the need for robust, durable lightweight structures has gradually promoted the use of fiber reinforced composite (FRC) mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/12
CPCG01N29/12G01N29/221G01N29/223G01N29/2418G01N29/2456G01N29/262G01N29/32G01N2291/0231G01N2291/102
Inventor 巴尔萨泽·费希尔
Owner 夏楼激光音响有限责任公司
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