Comparisons between Spectral Density Matrix Based Six-Degree-of-Freedom and Traditional One-Degree-of-Freedom Vibration Specification Development for a Common Large Cargo Truck Bed
As multiple degree-of-freedom excitation systems continue to evolve and become standard hardware in many dynamic test facilities, there continues to be a lag in the development of associated spectral density based vibration specifications. The following discussion is centered on the development of a six-degree-of-freedom spectral density matrix based vibration specification and various comparisons to traditional single-degree-of-freedom, combined three-degree-of-freedom, and synthesized six-degree-of-freedom specification results, all computed from a common set of field data and assumptions of a common mission scenario. Laboratory test results and general observations are presented.Abstract
Contributor Notes
Michael Hale earned a Bachelor of Science in Electrical Engineering from Auburn University in 1983 and his Master’s of Science in Engineering and Doctor of Philosophy degrees from The University of Alabama in Huntsville (UAH) through the Electrical and Computer Engineering Department in 1992 and 1998, respectively. Dr. Hale has been employed as a principal research engineer with Trideum Corporation since 2015. Prior to retirement from 32 years of federal service, he was employed as a senior electronics engineer and experimental developer in the Environmental and Component Test Directorate of the United States (US) Army Redstone Test Center (RTC), US Army Test and Evaluation Command (ATEC). Dr. Hale is an IEST Fellow and SAVE Lifetime Achievement Award recipient.
Contact: Michael Hale, PhD, mhale@trideum.com
William Barber earned a Bachelor’s of Science degree in Mechanical Engineering from Auburn University in 1992 and a Master of Science in Mechanical Engineering from UAH in 2005. Mr. Barber is currently employed as a senior mechanical engineer and experimental developer in the Environmental and Component Test Directorate of the US Army RTC, US ATEC, where he has worked for more than 30 years.
Jesse Porter spent 32 years working at the US Army RTC, Propulsion and Dynamic Test Divisions. His work involved field testing and signal analysis to capture and define the dynamic environment of military equipment during transport. He is recognized by US Army Missile Program Offices as a subject matter expert (SME) in the fields of dynamic testing, specification development, data acquisition, and analysis. Mr. Porter received his undergraduate degree in Electrical Engineering from the University of Alabama in1987, and his MSEE from UAH in 2008. He currently works as a Dynamic Test SME at Hill Technical Solutions in Huntsville, Alabama.
*Conducted under contract to the US Army Redstone Test Center