17/30317139 DC : 0
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
BS ISO 20155 - SHIPS AND MARINE TECHNOLOGY - TEST METHOD OF FLOW INDUCED IN-PIPE NOISE SOURCE CHARACTERISTICS FOR A SHIP-USED PUMP
Hardcopy , PDF
30-09-2017
English
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Two-port source model and test method of
source characteristic of pump
5 Test rig
6 Instrumentation
7 Preparation of test
8 Test procedure
9 Data processing
10 Evaluation criteria for the test result
11 Test report
Annex A (informative) - Theoretical models of a two-port
source and Transformation mutually between matrix Z, S, T
Annex B (informative) - Evaluation of quantities at ports of
inlet and outlet
Annex C (informative) - Judgment of effectiveness for the test
Annex D (informative) - The formulas for determining passive
characteristic of noise source
Annex E (informative) - The formulas for determining active
characteristic of source
Annex F (informative) - Verification of test method taking a
T-shaped sound excitor as a two-port acoustic source
Bibliography
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