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BS ISO 20998-2:2022

$167.15

Measurement and characterization of particles by acoustic methods. – Linear theory

Published By Publication Date Number of Pages
BSI 2022 42
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PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Symbols and abbreviations
12 5 Mechanism of attenuation (dilute case)
5.1 Introduction
5.2 Excess attenuation coefficient
13 5.3 Specific attenuation mechanisms
5.3.1 Scattering
5.3.2 Thermal losses
5.3.3 Viscoinertial losses
5.3.4 Non-monotonic relaxation mechanisms
5.4 Linear models
5.4.1 Review
14 5.4.2 Physical parameters
15 6 Determination of particle size
6.1 Introduction
16 6.2 Inversion approaches used to determine PSD
6.2.1 Optimization of a PSD function
6.2.2 Regularization
17 6.3 Limits of application
7 Instrument qualification
7.1 Calibration
7.2 Precision
7.2.1 Reference samples
18 7.2.2 Repeatability
7.2.3 Reproducibility
7.3 Accuracy
7.3.1 Qualification procedure
7.3.2 Reference samples
7.3.3 Instrument preparation
7.3.4 Accuracy test
7.3.5 Qualification acceptance criteria
19 8 Reporting of results
20 Annex A (informative) Viscoinertial loss model
21 Annex B (informative) ECAH theory and limitations
25 Annex C (informative) Example of a semi-empirical model
28 Annex D (informative) Iterative fitting
30 Annex E (informative) Physical parameter values for selected materials
31 Annex F (informative) Practical example of PSD measurement
40 Bibliography
BS ISO 20998-2:2022
$167.15