Wayne Tustin is a pioneer in the field of shock and vibration training. I have had the opportunity to learn from him at several IEST meetings and other conferences.
He taught me the meaning of SRS (G) and PSD (G^2/Hz) units, when I was a recent college graduate transitioning to the industrial workplace.
Wayne and his associates are offering training, which I recommend, via: Equipment and Reliability Institute
– Tom Irvine