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BS EN 17495:2022

BS EN 17495:2022

$102.76

Railway Applications. Acoustics. Determination of the dynamic stiffness of elastic track components related to noise and vibration: Rail pads and rail fastening assemblies

Published By Publication Date Number of Pages
BSI 2022 22
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This document specifies laboratory test procedures to determine a high-frequency dynamic stiffness, “acoustic stiffness”, of resilient components of rail fastening assemblies. This document is applicable to complete rail fastening assemblies and to pad components of fastening systems including both discrete and continuous fastening systems. It is applicable to the measurement of the dynamic transfer stiffness under a prescribed pre-load and the associated hysteretic damping loss factor. It provides measurement methods and pre-load, excitation and frequency range conditions for application to ground borne and structure borne noise as well as for rolling noise. It is not applicable to the measurement of the stiffness of pads and fastening assemblies under static or low-frequency dynamic loading used for track mechanics.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Symbols and abbreviated terms
9 5 General requirements
5.1 General
5.2 Apparatus
5.2.1 General
5.2.2 Accelerometers
5.2.3 Force transducers
5.2.4 Signal acquisition and processing equipment
5.2.5 Load applying equipment
10 5.2.6 Temperature environment
6 Requirements for different application cases
6.1 Preloads
11 6.2 Excitation amplitudes
7 Test methods
7.1 General
7.2 Arrangements applying to both the direct and indirect methods
7.2.1 Mounting arrangement for a pad
12 7.2.2 Mounting arrangement for a fastening assembly
13 7.2.3 Test temperature
7.2.4 Number of test specimens
7.3 Direct method
7.3.1 General
7.3.2 Principle
14 7.3.3 Apparatus
16 7.3.4 Procedure
7.3.5 Analysis
17 7.4 Indirect method
7.4.1 General
7.4.2 Principle
18 7.4.3 Apparatus
19 7.4.4 Procedure
7.4.5 Analysis
20 8 Test report

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BS EN 17495:2022
$102.76