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Measurements of Transmission and Attenuation Characteristics of Fluidborne Noise in Fluid Hoses with/without Tuning Cables
Technical Paper
2001-01-1610
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The transmission of fluidborne pressure and flow pulsations through a hose assembly is dominated by a four-port transfer matrix equation. The potential of pulsation attenuation in the assembly is then related to the four parameters of the matrix by the concept of “Transmission Loss”. The paper presents the development of an accurate test system, based on the “Four Sensors/Two Systems” method, for measuring the transfer matrix and transmission loss of hose assemblies. Particular attention is paid to the solutions to some technical problems encountered during the development and measurement. Then presented is the application of the system to various types of flexible hose with or without tuning cables used in power steering hydraulic systems. The measurements are very valuable for developing the best tuning cable and hose devices, quieter power steering systems as well as the hoses used similarly in other fluid power systems.
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Authors
Citation
Yu, J. and Popescu, S., "Measurements of Transmission and Attenuation Characteristics of Fluidborne Noise in Fluid Hoses with/without Tuning Cables," SAE Technical Paper 2001-01-1610, 2001, https://doi.org/10.4271/2001-01-1610.Also In
SAE 2001 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V110-6; Published: 2002-09-15
Number: V110-6; Published: 2002-09-15
References
- Yu J. et al “Experimental Evaluation for Fluidborne Noise Attenuation in Tuning Cables and Hoses of Automotive Power Steering Hydraulic Systems,” SAE technical paper 1999-01-1777 1 6 1999
- Kojima E. Ichiyanagi T. Kimura Y. “Analysis of Flexible Hoses with Spiral Tubular Inserts for a Reduction in the Fluidborne Pressure Pulsation in an Automotive Power Steering Hydraulic System,” Hydraulics and Pneumatics 27 6 98 105 1997
- Yu J. Kojima E. “Wave Propagation in Fluids Contained in Finite-Length Anisotropic Viscoelastic Pipes,” J. Acoust. Soc. Am. 104 6 3227 3235 1998
- Drew J. E. Longmore D. K. Johnston D. N. “Measurement of the Longitudinal Transmission Characteristics of Fluid-Filled Hoses.” Proc. Instn. Mech. Engrs. 211 219 228 1997
- Johnston D. N. Longmore D. K. Drew J. E. “A Technique for the Measurement of the Transfer Matrix Characteristics of Two Port Hydraulic Components.” ASME Winter Annual Meeting Chicago 1994
- Longmore D. K. Schlesinger A. “Relative Importance of the Various Vibration Transmitting Mechanisms in Hoses in Typical Hydraulic Systems.” Proc. Instn. Mech. Engrs 205 105 111 1991
- To C. W. S. Doige A. G. “A Transient Testing Technique for the Determination of Matrix Parameters of Acoustic System, 1: Theory and Principles,” J. Sound Vib. 62 2 207 222 1979
- Chung J. Y. Blaser D. A. “Transfer Function Method of Measuring In-Duct Acoustic Properties. 1. Theory,” J. Acoust. Soc. Am. 68 3 907 913 1980
- Kojima E. “Experimental Determination of the Transfer Matrix Paramters for Hydraulic Silencers and Considerations of the Test Method Standard for Assessment of their Performance.” 7 th Bath International Fluid Power Workshop on Components and Systems 1994
- Yu J. Kojima E. “Methods for Measuring the Speed of Sound in the Fluid in Fluid Transmission Lines.” SAE technical paper 2000-01-2618 1 10 2000