ABSTRACT
Method 31, bump: Condition with 1000-4000 shocks in each direction along each axis to 1 of 8 degrees of severity ranging from 10 to 40 g acceleration with half-sine wave pulse durations of 6-16 ms. Method 32, drop and topple: Condition with 1 of 3 degrees of severity involving 25-100 mm drops on each corner plus topple about each edge. Method 33, freefall: Condition in transport container or unprotected (if so designed) with 2-50 falls ranging in severity from 25 to 1000 mm, depending on the mass of specimen. Method 34, bounce: Condition to 1 of 3 degrees of severity ranging from 15 to 180 min with double amplitude 25.5 mm and 4.75 Hz frequency on an approved bounce table. Method 35, steady-state acceleration: Condition to 1 of 3 degrees of severity ranging from 5 to 20 g for 1 to 2 min in each direction along each axis. Method 36, vibration, sinusoidal sweep frequencies: Condition at ambient conditions to 1 of 10 degrees of severity involving displacements ranging from 0.035 to 1.0 mm and accelerations of 0.5-5 g sweeping at 1 octave/min within frequency bands ranging from (lowest) 10-55 Hz for equipment used on ships, near heavy machinery, or in general industrial applications to (highest) 10-2000 Hz for equipment used in aircraft and missiles. This test may be followed by conditioning to 1 of 3 degrees of severity ranging from 10 to 90 min vibration along each axis at characteristic frequencies indentified under sweep frequency tests or identified in the applicable specification. Method 37, vibration, random: Condition to 1 of 26 degrees of severity ranging from a power spectral density of 0.001-0.2 g2/Hz with random frequencies of 20-2000 Hz and conditioning times of 9-90 min.
