Symbol
Meaning
Ibf/in log x log10 x MAS m mil mm mm/s m/s m/s² mV/g n. pref. rad rad/s rms rpm s sec sin x t vb vdB w.r.t. x x² 1X ° √x θ
pound force per inch the logarithm of x the base-10 logarithm of x Measurement Analysis Software meter(s) 0.001 inch millimeter(s) millimeters per second meters per second meters per second per second milliVolts per g noun prefix radian(s) radians per second root-mean-square revolutions per minute second(s) second(s) the sine of x time COMMTEST INSTRUMENTS vibration analyzer decibel unit for velocity with reference to the average value of x the square of x (x times x) fundamental frequency degree(s) the square root of x angle phase angle the constant pi (roughly equal to 3.14) the sum of x values angular frequency (expressed in rad/s)
∅
π Σx ω
Copyright 2003 COMMTEST INSTRUMENTS
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Beginner’s Guide To Machine Vibration