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[The role of acoustic impedance test in the diagnosis for occupational noise induced deafness].
Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 2018Objective: To investigate the characteristics of acoustic impedance test and its diagnostic role for occupational noise induced deafness, in order to provide an objective basis for the differential diagnosis of occupational noise induced deafness. Methods: A retrospective study was conducted to investigate the cases on the diagnosis of occupational ...
H, Chen +5 more
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Construction and testing of a modern acoustic impedance tube
2012The acoustic impedance of a material describes its reflective and absorptive properties. Acoustic impedance may be measured in a wide variety of ways. This thesis describes the construction and testing of an acoustic impedance measurement tube which employs modem Fourier Transform techniques.
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On the Value of Acoustic Impedance Tests in the Clinic
International Journal of Audiology, 1971V. M. Priede, R. R. A. Coles
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2009
Eine der größten Herausforderungen für die Entwicklung zukünftiger schadstoffarmer Gasturbinenkraftwerke ist die Gewährleistung eines stabilen Verbrennungsprozesses. Um die immer strikter werdenden Emissionsrichtlinien, vor allem hinsichtlich NOx, zu erfüllen, führte die Gasturbinenindustrie die Mager-Vormisch-Verbrennung ein.
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Eine der größten Herausforderungen für die Entwicklung zukünftiger schadstoffarmer Gasturbinenkraftwerke ist die Gewährleistung eines stabilen Verbrennungsprozesses. Um die immer strikter werdenden Emissionsrichtlinien, vor allem hinsichtlich NOx, zu erfüllen, führte die Gasturbinenindustrie die Mager-Vormisch-Verbrennung ein.
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Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method
2008+5 more sources
Grazing Flow Acoustic Impedance Testing for the NASA AST Program
8th AIAA/CEAS Aeroacoustics Conference & Exhibit, 2002Judith Gallman, Robert Kunze
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2022
Impedance tube method is widely used to measure acoustic properties of materials. Although this method yields reliable acoustic properties for soft textured materials, uncertainty levels of measured acoustic properties for hard materials, including biocomposites, can be quite large, mainly due to uncertain mounting conditions.
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Impedance tube method is widely used to measure acoustic properties of materials. Although this method yields reliable acoustic properties for soft textured materials, uncertainty levels of measured acoustic properties for hard materials, including biocomposites, can be quite large, mainly due to uncertain mounting conditions.
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Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method
2022openaire +1 more source
A Review of Acoustic Impedance Matching Techniques for Piezoelectric Sensors and Transducers
Sensors, 2020Vivek T Rathod
exaly
OS0717 Ultrasonic Testing Using Powder Coupling with Adjustable Acoustic Impedance
The Proceedings of the Materials and Mechanics Conference, 2012Kazuya MORI +2 more
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