AS ISO 5349.1 pdf download Mechanical vibration—Measurement and evaluation of human exposure to hand-transmitted vibration Part 1: General requirements
This part of ISO 5349 specifies general requirements for measuring and reporting hand-transmitted vibrationexposure in three orthogonal axes. lt defines a frequency weighting and band-limiting filters to allow uniformcomparison of measurements. The values obtained can be used to predict adverse effects of hand-transmittedvibration over the frequency range covered by the octave bands from 8 Hz to 1 000 Hz.
This part of ISO 5349 is applicable to periodic and to random or non-periodic viration. Provisionally, this part ofSO 5349 is also applicable to repeated shock type excitation (impact).
NOTE 1The time dependency for human response to repeated shocks is not fully known. Application of this part ofISO 5349 for such vibration is to be made with caution.
This part of ISO 5349 provides quidance for the evaluation of hand-transmited vibration exposure, specified interms of a frequency-weighted vibration acceleration and daily exposure time. lt does not define limits of safevibration exposure.
NOTE 2Annex C is concerned with the approximate relative importance of various characteristics of the vibration exposurewhich are believed to produce health effects.
2 Normative references
The following normative documents contain provisions which, throuah reference in this text, constitute provisions ofthis part of ISO 5349. For dated references, subsequent amendments to, or revisions of, any of these publicationsdo not apply. However, parties to agreements based on this part of lSO 5349 are encouraged to investigate thepossibility of applying the most recent editions of the normative documents indicated below. For undatedreferences. the latest edition of the normative document referred to applies. Members of ISO and IEC maintainregisters of currently valid International Standards.
SO 2041，Vibration and shock 一 Vocabulary
SO 5349-2.Mechanical vibration -Measurement and evaluation of human exposure to hand-transmittedvibration — Part 2: Practical guidance for measurement at the workplace.
SO 8041, Human response to vibration — Measuring instrumentation.
EC 61260，Electroacoustics 一 Octave-band and fractional-octave-band filters.
3Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this part of ISO 5349, the terms and definitions given in ISO 2041 apply.NOTEFor the convenience of users of this part of ISO 5349, a glossary of terms relating to medical conditions is given in
In this part of ISO 5349, the following symbols are used.
instantaneous single-axis acceleration value of the frequency-weighted hand-transmitted vibrationat time t, in metres per second squared (m/s2);
root-mean-square (r.m.s) single-axis acceleration value of the frequency-weighted handtransmitted vibration, in metres per second squared (m/s2);
values of ahw, in metres per second squared (m/s2), for the axes denoted x, y and z respectively;ahwx，ahwy;@hwz
vibration total value of frequency-weighted r.m.s. acceleration (sometimes known as the vectorsum or the frequency-weighted acceleration sum); it is the root-sum-of-squares of the ahw valuesfor the three measured axes of vibration, in metres per second squared (m/s2);
daily vibration exposure (8- energy-equivalent vibration total value), in metres per secondsquared (m/s2);
a convenient alternative term for the daily vibration exposure ahv(eq,8h);