# peak vector sum

## French translation: somme vectorielle des vitesses de crète

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
 English term or phrase: peak vector sum French translation: somme vectorielle des vitesses de crète Entered by:

 19:56 Dec 3, 2016
English to French translations [PRO]
Construction / Civil Engineering
 English term or phrase: peak vector sum The blasting seismograph vibration monitor (example photo at left) is the most commonly used tool for measuring vibration and determining compliance with ground vibration standards. It is used in both blasting and construction settings, in spite of some serious limitations in measuring construction vibration. The monitor translates its raw observations into a number of different measures of the speed of ground vibration. The one most accepted in the field is the peak particle velocity (PPV).12 This, as the name implies, is a measurement of maximum ground particle movement speed, specified in the U.S. in inches per second (in/sec) and in most of the rest of the world in millimeters per second (mm/sec). This quantity is measured in all three perpendicular axes of the seismograph's "geophones", as the magnet-in-coil detecting devices within the gray, cylindrical seismograph transducer head are called. PPV is a "vector" quantity (i.e. it has both a value and an associated direction). The peak vector sum (PVS) is usually also quoted; it is simply the square root of the sum of the squares of the PPV values in all three vector directions measured by the seismograph. PVS is a "scalar" quantity, i.e. one with only a value, which is always larger than the individual PPV vector values. Scientific studies have shown that the PPV correlates best with damage potential of all the tested characterizations of ground movement (e.g. acceleration, displacement, or strain). Virtually all the standards are quoted in PPV values, not PVS or other measures of movement, although the "acceptable" values of PPV differ with the standard applied and with the frequency of the vibration components.
 Olivier Den HartighFrance Local time: 07:14
 somme vectorielle des vitesses de crète Explanation:"Méthodologie et critères d'évaluation des impacts du ... - Rio Tinto http://www.riotinto.com/documents/R_An07B_MethAcou_FR.pdf La loi décrivant la somme vectorielle des vitesses de crête (Peak Vector Sum, PVS) des vibrations au sol d'un site donné est définie comme : PVS (mm/s) = 1140 ..." "L ’analyse a été effectuée avec le logiciel Blastware v10.20 d ’Instantel afin de déterminer la vitesse crête de particule (PPV), la somme vectorielle des vitesses crête (PVS) et la fréquence de l ’onde à la crête la plus élevée (ZCF). Le signal de vitesse de vibration a été dérivé pour obtenir l’accélération et filtré à travers un filtre passe-bas avant de faire la transformée de Fourrier (FFT) de l ’onde." http://jcaa.caa-aca.ca/index.php/jcaa/article/viewFile/2486/...
Selected response from:

FX Fraipont
Belgium
Local time: 07:14
 Selected automatically based on peer agreement.4 KudoZ points were awarded for this answer

4 +2somme vectorielle des vitesses de crète
 FX Fraipont
3 +1somme vectorielle maximale
 Christian Fournier

16 mins   confidence: peer agreement (net): +1
somme vectorielle maximale

Explanation:
c'est ce que je dirais...

 Christian FournierFranceLocal time: 07:14Native speaker of: FrenchPRO pts in category: 12

agree  GILOU: somme vectorielle des pics
 9 hrs

57 mins   confidence: peer agreement (net): +2
somme vectorielle des vitesses de crète

Explanation:
"Méthodologie et critères d'évaluation des impacts du ... - Rio Tinto
http://www.riotinto.com/documents/R_An07B_MethAcou_FR.pdf
La loi décrivant la somme vectorielle des vitesses de crête (Peak Vector Sum, PVS) des vibrations au sol d'un site donné est définie comme : PVS (mm/s) = 1140 ..."

"L ’analyse a été effectuée avec le logiciel Blastware v10.20 d ’Instantel afin de déterminer la vitesse crête de particule (PPV), la somme vectorielle des vitesses crête (PVS) et la fréquence de l ’onde à la crête la plus élevée (ZCF). Le signal de vitesse de vibration a été dérivé pour
obtenir l’accélération et filtré à travers un filtre passe-bas avant de faire la transformée de Fourrier (FFT) de l ’onde."
http://jcaa.caa-aca.ca/index.php/jcaa/article/viewFile/2486/...

 FX FraipontBelgiumLocal time: 07:14Works in fieldNative speaker of: FrenchPRO pts in category: 1740
 Selected automatically based on peer agreement.

agree  Daryo: that's the term used, although calling "vector sum" a variable that is fact a scalar is a really strange "appliance of [mathematical] science"!
 6 mins

agree  Didier Fourcot: C'est une moyenne quadratique des amplitudes, mais le terme semble attesté bien que trompeur
 1 day 16 hrs

 Dec 17, 2016 - Changes made by FX Fraipont: Created KOG entry KudoZ term » KOG term

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