Železniční aplikace - Akustika - Stanovení dynamické tuhosti elastických komponentů koleje ve vztahu k hluku a vibracím - Podložky pod patu kolejnice a sestavy upevnění kolejnic (Norma k přímému použití jako ČSN).
NORMA vydána dne 1.2.2023
Designation standards: ČSN EN 17495
Classification mark: 736345
Catalog number: 516143
Publication date standards: 1.2.2023
The number of pages: 24
Approximate weight : 72 g (0.16 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN
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