Hrl Laboratories, LLC

Chia-Ming “Gavin” Chang

Alan Jon Jacobsen

Andrew Paul Nowak

Geoffrey P McKnight

David T Chang

Christopher Paul Henry

Tobias A Schaedler

Jacob Michael Hundley

William B Carter

Hung P Nguyen

Raviv Perahia

Logan D Sorenson

Eric C Clough

Lian X Huang

A resonant structure comprising at least two coaxial rings, wherein adjacent coaxial rings have adjacent peripheries and are attached together by a plurality of connection structures regularly arranged along said adjacent peripheries; and wherein a first ring has a first ring portion with a first radial thickness and a second ring, portion, in a vicinity of a first connection structure, with a second radial thickness smaller than said first radial thickness.

High quality factor MEMS silicon hinge and slot-cut resonator for a vibratory gyroscope

Described is a micro-lattice damping material and a method for repeatable energy absorption. The micro-lattice damping material is a cellular material formed of a three-dimensional interconnected network of hollow tubes. This material is operable to provide high damping, specifically acoustic, vibration or shock damping, by utilizing the energy absorption mechanism of hollow tube buckling, which is rendered repeatable by the micro-lattice architecture.

Microlattice damping material and method for repeatable energy absorption

A sandwich material having both structural strength and significant acoustic attenuation. In one embodiment, a sandwich is composed of an architected core secured between two facesheets, with a compliant layer forming the connection between the core and the facesheets. The compliant core has a low modulus, resulting in a low speed for elastic shear waves in the sandwich, at low static loads. At high static loads the compliant material stiffens and allows the sandwich to exhibit significant structural strength.

Progressive stiffness structural-acoustic sandwich panel

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Agoura Hills, CA, United States of America

Chia-Ming “Gavin” Chang