John E. Crawford, P.E.
Nearly forty years of analysis and design experience concerning the survival of
a broad range of buildings, structures, and equipment from blast and shock loads.
He has developed a variety of innovative and practical concepts to mitigate blast
and shock effects for critical structural components, windows and façade
features, and occupants. Spearheaded the use of composites and other new materials,
such as polymers, for the development of effective and aesthetic blast-resistant
designs. Extensive experience in nonlinear analysis of structures using 3-D high-fidelity
physics based modeling techniques. Has prepared designs for reducing the risk
of terrorist attack for embassies and other Government buildings. Familiar with
and helped author Government design manuals and guidelines pertaining to blast
and shock. Mr. Crawford has authored more than 350 reports and papers regarding
the assessment and mitigation of the effects from blast and shock on structures,
mechanical systems, and people.
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Kenneth B. Morrill, P.E., G.E.
Over thirty years of experience in the analysis of civil and aerospace structures
subjected to static and dynamic loads. Extensive background in finite element
analysis of structures subjected to seismic ground motions, and aeronautical and
blast loading. Mr. Morrill has served as a principal investigator in the development
of blast and shock design methodologies for tunnels, including finite element
analysis of pretest predictions and posttest analysis of test data. Has designed
and conducted numerous full-scale blast effects tests, including the development
of test fixtures with multi-test versatility and uncompromised posttest ruggedness
and functionality. He has published more than 50 reports and given numerous client
briefings.
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