1. A little physics, and a few definitions
1.1 Vibrations
Vibration" refers to the oscillation of an elastic medium around its equilibrium position, involving three fundamental quantities:
the kinetic energy of the medium set in vibratory motion ;
the restoring energy resulting from the elasticity of the medium distorted by the vibration ;
the frequency of oscillation, which is the number of deformation cycles in one second, and whose unit is the Hertz, noted Hz. The unit 1 Hz corresponds to a sinusoidal vibration with a period equal to one second. A vibration of 100 Hz therefore corresponds to a sinusoid with a period of 0.01 seconds.
Vibrations therefore affect all elastic solids,...
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A little physics, and a few definitions
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Bibliography
Norms and standards (non-exhaustive list)
The Association française de normalisation (AFNOR) provides French and foreign standards.
French standards (AFNOR and UTE – Union technique de l'électricité) may or may not correspond to ISO (International Organization for Standardization) and IEC (International Electrotechnical Commission) standards. The degree of conformity, which is specified, is: identical, equivalent...
Regulations (non-exhaustive list)
Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast) (OJ L. 157 of 9 June 2006, pp. 24-86)
Directive 98/37/EC of the European Parliament and of the Council of 22 June 1998 on the approximation of the laws of the Member States relating to machinery (OJ L. 207, 23 July 1998, pp. 1-46).
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