Français
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,...
The Ultimate Scientific and Technical Reference
This article is included in
Mechanical and dimensional measurements
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
A little physics, and a few definitions
Sectors concerned
Also in our database
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).
...
The Ultimate Scientific and Technical Reference
