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ULTRASONICS - MEASUREMENTS OF ELECTROACOUSTICAL PARAMETERS AND ACOUSTIC OUTPUT POWER OF SPHERICALLY CURVED TRANSDUCERS USING THE SELF-RECIPROCITY METHOD
International Electrotechnical Committee
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Availability date: 11/05/2021
FOREWORD<br>INTRODUCTION<br>1 Scope <br>2 Normative references <br>3 Terms and definitions <br>4 Symbols <br>5 General<br>6 Requirements of the measurement system <br>7 Measurement of the effective half-aperture of the<br> spherically curved transducer <br>8 Measurements of the electroacoustical parameters<br> and the acoustic output power<br>9 Measurement uncertainty <br>Annex A (informative) - Relation of the average<br> amplitude reflection coefficient on a plane<br> interface of water-stainless steel and the focus<br> half-angle for a normally incident beam of a<br> circular spherically curved transducer [1, 2]<br>Annex B (informative) - Diffraction correction<br> coefficient G[sf] in the free-field selfreciprocity<br> calibration method for circular spherically<br> curved transducers in water neglecting<br> attenuation [2, 3, 4]<br>Annex C (informative) - Calculation of the diffraction<br> correction coefficient G[sf](R/[lambda],[beta]) in the<br> free-field self-reciprocity calibration in a<br> non-attenuating medium for a circular spherically<br> curved transducer [2, 3, 4, 7]<br>Annex D (informative) - Speed of sound and attenuation<br> in water<br>Annex E (informative) - Principle of reciprocity calibration<br> for spherically curved transducers [2, 3, 4]<br>Annex F (informative) - Experimental arrangements<br>Annex G (informative) - Relationships between the<br> electroacoustical parameters used in this<br> application [13] <br>Annex H (informative) - Evaluation and expression of<br> uncertainty in the measurements of the radiation<br> conductance <br>Bibliography
Describes: - the free-field convergent spherical wave self-reciprocity method for ultrasonic transducer calibration, - the measurement conditions and experimental procedure required to determine the transducer's electroacoustic parameters and acoustic output power using the self-reciprocity method, - the criteria for checking the reciprocity of these transducers and the linear range of the focused field, and - guiding information for the assessment of the overall measurement uncertainties for radiation conductance.
Published | |
Document Type | Standard |
Status | Current |
Publisher | International Electrotechnical Committee |
Pages | |
ISBN | |
Committee | TC 87 |