QinetiQ Group has patented a non-woven composite material with reinforcing fibers and shape memory alloy wires, held together by a polymer thread. The material offers impact performance and penetration resistance. GlobalData’s report on QinetiQ Group gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on QinetiQ Group, was a key innovation area identified from patents. QinetiQ Group's grant share as of April 2024 was 50%. Grant share is based on the ratio of number of grants to total number of patents.

Non-woven composite material with impact resistance and penetration resistance

Source: United States Patent and Trademark Office (USPTO). Credit: QinetiQ Group Plc

A recently granted patent (Publication Number: US11926719B2) discloses a composite material comprising a preform material with reinforcing fibers and shape memory alloy (SMA) wires, held together by a polymer thread. The SMA wires and reinforcing fibers are not woven together, and the preform material does not contain polymer resin. The composite material can consist of a single ply or multiple plies, with the SMA wires and reinforcing fibers arranged in a single direction, which can vary in different plies. The composite material is suitable for various applications, including aircraft structural components like nacelles.

The patent also covers a method of making the composite material, involving curing a prepreg material with reinforcing fibers and SMA wires coated with uncured polymer resin. The polymer resin can be cured using heat, UV, and pressure, with various curing agents like amines. The method includes forming a stacked preform by layering preform materials and applying polymer resin before curing to create the composite material. Additionally, the patent describes a head component for automatic fiber placement devices, aligning reinforcing fibers and SMA wires in a unidirectional manner for efficient manufacturing of the composite material. Overall, the patent provides a detailed insight into the composition, manufacturing process, and potential applications of the innovative composite material.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.