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Experimental Modal Analysis of the Advanced Combat Helmet

[+] Author Affiliations
Alessio Medda

Henry M. Jackson Foundation, Ft. Rucker, AL

Jay Shridharani, Cameron D. Bass

Duke University, Durham, NC

Valeta Carol Chancey

U.S. Army Aeromedical Research Lab, Ft. Rucker, AL

Paper No. IMECE2011-62703, pp. 9-15; 7 pages
doi:10.1115/IMECE2011-62703
From:
  • ASME 2011 International Mechanical Engineering Congress and Exposition
  • Volume 2: Biomedical and Biotechnology Engineering; Nanoengineering for Medicine and Biology
  • Denver, Colorado, USA, November 11–17, 2011
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5488-4
  • Copyright © 2011 by ASME

abstract

In this work we present a study of the characterization of an Advanced Combat Helmet (ACH) using experimental modal analysis techniques. A medium-sized helmet was impacted at different location and the vibration response was used to estimate a global frequency model. This was achieved using the modal parameters of the local models obtained for a specific input-output location and combining them in a global model. The estimation of the frequency model was done using well-established least squares techniques, while the contribution of measurement noise in input and output was considered.

Copyright © 2011 by ASME
Topics: Warfare

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