Conformable layer utilizing active material actuation

Abstract

A conformable protective layer, such as a fabric or covering, adapted for overlaying an object or space, and presenting a condition, such as a geometric configuration or stiffness, includes at least one shape memory alloy, electroactive polymer, or similar active material based actuator operable to undergo a reversible change when exposed to and / or removed from an external signal, and is configured such that the change is operable to autonomously modify the condition, or facilitate placement and removal of the layer.

Description

BACKGROUND OF THE INVENTION[0001]1. Technical Field[0002]This disclosure generally relates to conformable fabrics, coverings, and methods of donning, applying, or employing the same; and more particularly, to those that utilize shape memory alloy or electroactive polymer actuation to effect functionality.[0003]2. Background Art[0004]Fabrics, coverings, and other protective layers have long been developed to form superjacent layers with, or otherwise overlay an object or space. For example, fabrics and coverings are often employed in clothing and apparel as a means to protect a human wearer, in tent or canopy construction to present a habitable confine; in food storage and consumer goods protection to present various types of wraps; and finally, in automotive and boating settings to protect at least a portion of the vehicle or boat, or its cargo, from harmful exterior elements.[0005]With particular respect to food storage and consumer goods, an air-tight or wrinkle-free fit between t...

AI Technical Summary

Benefits of technology

The invention is a conformable protective layer that uses shape memory alloys or electroactive polymers to automatically adjust to the shape of an object or space. This layer can be applied to objects and increase the area of engagement with the object, resulting in a smoother finish and improved appearance. The layer can also be easily removed and tightened, providing enhanced structural stiffness. Additionally, the layer can apply surface pressures and tensions more evenly compared to purely elastic coverings. Overall, the invention provides a versatile and adaptable protective layer for overlaid objects or spaces.

Problems solved by technology

Concernedly, however, these types of wraps typically present limited application, and a limited number of uses due to the irreversibility of the polymeric changes.

Concernedly, however, it is appreciated that SMP based reconfigurable fabrics or coverings require substantial energy input for activation, and due to low thermal conductivity rates, result in large cycle times.

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