Patent · US Active

Strain sensing compositions

US11125633B2 · kind B2 · utility

0Cited by

1References

19Claims

0Family size

Assignee

THE JOHNS HOPKINS UNIVERSITY · US

Inventors

Zhiyong Xia · Rockville, US
Vanessa D. Alphonse · Silver Spring, US
Evan Lloyd · Baltimore, US

Key dates

Filing date	Aug 6, 2019
Grant date	Sep 21, 2021
Priority date	—
Expiry date	Aug 6, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D491/20
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Strain sensing compositions including a polymeric matrix material and a mechanophore component distributed throughout the polymeric material and covalently bonded to the polymeric material are provided. The mechanophore component undergoes a visible color change and the strain sensing composition exhibits a continuous three-dimensional (3D) spatial strain distribution including at least one color gradient upon direct or indirect impact by an object. Methods of forming strain sensing compositions are also provided. Methods of evaluating a strain distribution associated with an impact of a surrogate material comprising a mechanophore component are also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.