Amazon Technologies, Inc.

Guruprasad Ramanathan

Isabella Talley Lewis

Ramez Nachman

Bradley David Urban

Mohammed Aftab Alam

John Frederick Larkin

Shankar Ganapathysubramanian

Srivatsan Subbarayan

Gregory James Nyssen

Robi Thomas

Cameron Bo Logsdon

Michael Paul Nelson

William Franklin Troutman, Jr

David Tang

An example enclosure includes a base, a plurality of walls extending from the base, and a top disposed opposite the base and connected to at least one of the plurality of walls. The enclosure also includes a light assembly configured to illuminate an interior space of the enclosure. The light assembly includes a diffuser, a heat sink connected to the diffuser, a substrate connected to the heat sink, and a light source connected to the substrate. The diffuser may be connected to one of the top or the base such that the heat sink is spaced from the one of the top or the base. Additionally, the top is moveable toward the base to transition the enclosure from an expanded state to a collapsed state.

Collapsible photo enclosure and components

An example method includes positioning a mass at a height opposite a modulator characterized by a particular strain rate and support by a carrier moveably disposed opposite the mass. The method also includes releasing the mass such that the mass impacts the modulator, and an additional component connected to the carrier causes failure of a sample of material. The method further includes determining a displacement of the carrier corresponding to failure of the sample, determining a force applied to the modulator by the mass and resulting in failure of the sample, and determining at least one of a dynamic strength of the sample and a dynamic modulus of the sample. In such a method, the dynamic strength is based on the force applied to the modulator and the strain rate. Additionally, the dynamic modulus is based on the displacement of the carrier and the strain rate.

Measurement of dynamic material properties

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Los Altos, CA, United States of America

Guruprasad Ramanathan