This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Methods for Measuring the Speed of Sound in the Fluid in Fluid Transmission Pipes
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 11, 2000 by SAE International in United States
Annotation ability available
A summary of several existing methods for measuring the speed of sound in the fluid in a pipe is presented first. Their basic principles, advantages and limitations are compared. Those methods are good enough for the fluid in rigid pipes, but not for the fluid in a compliant fluid pipe system. The paper proposes an accurate measuring method using a system for determining the transfer matrix parameters of fluid power components. This method can provide satisfying results for the fluid contained not only in a rigid pipe but also in other softer/deformable pipes, such as flexible rubber hoses.
CitationYu, J. and Kojima, E., "Methods for Measuring the Speed of Sound in the Fluid in Fluid Transmission Pipes," SAE Technical Paper 2000-01-2618, 2000, https://doi.org/10.4271/2000-01-2618.
SAE 2000 Transactions Journal of Commercial Vehicles
Number: V109-2 ; Published: 2001-09-15
Number: V109-2 ; Published: 2001-09-15
- Edge K.A. and Johnston D.N., “The ‘Secondary Source’ Method for the Measurement of Pump Pressure Ripple Characteristics, Part 2: Experimental Results,” Proc. Instn. Mech. Engrs, Part A, 204, pp.41-46 (1990).
- Kojima E., “A New Method for the Experimental Determination of Pump Fluid-Borne Noise Characteristics,” Proceedings of the 5th Bath International Fluid Power Workshop, Circuit, Component and System Design, pp.111-135 (1992).
- Kojima E., Yu J. and Ichiyanagi T., “Experimental Determining and Theoretical Predicting of Source Flow Ripples Generated by Fluid Power Piston Pumps.” Proceedings of the 2000 SAE International Off-Highway & Powerplant Congress & Exposition, Milwaukee, USA (2000).
- Yu J., et al, “The Variation of Oil Effective Bulk Modulus with Pressure in Hydraulic Systems,” Trans. ASME, Journal of Dynamic Systems, Measurement, and Control, Vol.116, pp.146-150 (1994).
- Johnston D. N. and Edge K. A., “In-Situ Measurement of the Wavespeed and Bulk Modulus in Hydraulic Lines.” Proc. Instn. Mech. Engrs, Part I, 205, pp.191-197 (1991).
- ISO/CD15086-2, “Hydraulic Fluid Power - Determination of the Fluid Borne Noise Characteristics of Components and Systems, Part 1: Measurement of the Speed of Sound in a Fluid.”
- Kojima E. and Ichiyanagi T., “Experimental Investigation on the Accuracy of the ‘Measuring Method of the Speed of Sound in the Fluid in a Rigid Pipe’ Described in ISO/CD15086-2.” Submitted to Hydraulics & Pneumatics (Japanese) (1999).
- Yu J., et al, “Experimental Evaluation for Fluidborne Noise Attenuation in Tuning Cables and Hoses of Automotive Power Steering Hydraulic Systems.” Proceedings of the 1999 SAE Noise and Vibration Conference, Traverse, Michigan, pp.342-347 (1999).
- Yu J., et al, “Research on the Dynamic Model of Effective Bulk Modulus of Elasticity of Hydraulic Oil.” Proceedings of the 1st International Symposium on FPTC, Beijing, China, pp.606-610 (1991).
- Lung T. Y. and Doige A. G., “A Time-Averaging Transient Testing Method for Acoustic Properties of Piping Systems and Mufflers with Flow,” J. Acoust. Soc. Am. 73(3), pp.867-876 (1983).
- To C. W. S. and 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), pp.207-222 (1979).
- Kojima E., “Experimental Determination of the Transfer Matrix Paramters for Hydraulic Silencers and Considerations of the Test Method Standard for Assessment of their Performance.” 7th Bath International Fluid Power Workshop on Components and Systems (1994).
- Johnston D. N., Longmore D.K. and Drew J. E., “A Technique for the Measurement of the Transfer Matrix Characteristics of Two Port Hydraulic Components.” ASME Winter Annual Meeting, Chicago (1994).
- Yu J. and Kojima E., “Wave Propagation in Fluids Contained in Finite-Length Anisotropic Viscoelastic Pipes,” J. Acoust. Soc. Am. 104 (6), pp.3227-3235 (1998).