US Patent Issued to YAMAGUCHI UNIVERSITY on Dec. 9 for "Estimation method of stress and strain history in cement-based composite materials and calcite particle aggregates" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,950, issued on Dec. 9, was assigned to YAMAGUCHI UNIVERSITY (Yamaguchi, Japan).

"Estimation method of stress and strain history in cement-based composite materials and calcite particle aggregates" was invented by Arito Sakaguchi (Yamaguchi, Japan) and Kouhei Ando (Yamaguchi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "For measuring the stress history in a simple form, which is widely applicable to various types of structural materials which the elastic modulus is different from each other, a large number of calcite particles is embedded as a stress sensor in a cement-based composite material that can be elastically deformed after receiving a...