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  1. CarForumPoster

    Shock Test on Shaker Mil-STD-810G. Over Test on equipment vibration isolated

    I agree with the above^^ It matters what the real world shock environment is, not whether or not it is hard on the equipment. Getting 80Gs on the equipment with a 40G base excitation isn't a surprisingly high amount. I've seen spikes on isolated equipment over 100G from that same pulse.
  2. CarForumPoster

    Shock Test on Shaker Mil-STD-810G. Over Test on equipment vibration isolated

    My background is aerospace electronics. It is common to shock test isolated equipment on a shaker. On isolated equipment you can expect a high shock response. The test in MIL-STD-810 (I am guessing you're doing crash safety shock, procedure V since you mentioned 40G 11ms Sawtooth) calls for a...
  3. CarForumPoster

    "The APSD must be approximately uniform over the half power bandwidth of each oscillator."

    Thank you both, that is very helpful. I am interested in calculating fatigue damage spectrums for base excitations where this is not the case. E.G. broadband random with narrowband spikes) The powerpoint here provides a general equation that does not make this assumption...
  4. CarForumPoster

    "The APSD must be approximately uniform over the half power bandwidth of each oscillator."

    Hi, I am reading this paper: http://www.vibrationdata.com/tutorials2/FDS_FDET_McNeill.pdf In the intro it says "The APSD must be approximately uniform over the half power bandwidth of each oscillator." What is the significance of the Acceleration PSD being "uniform" over the HPBW? What does...
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