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Showing papers by "Harbin Institute of Technology published in 1983"


Journal ArticleDOI
TL;DR: A new solution of the vectormaximum problem will be defined in terms of fuzzy mathematics and may be called the fuzzy solution, which will overcome difficulties which appear if otherwise solved by nonfuzzy mathematics.

38 citations


Journal ArticleDOI
TL;DR: In this paper, the pulse-spectrum technique (PST) is extended and developed to solve inverse problems of two-dimensional linear wave equations, which has the practical advantage of having the necessary data measured on a portion of the boundary only and no geometric limitation on the testing objects.

28 citations


Journal ArticleDOI
TL;DR: In this paper, the microstructure and tensile properties of steels 15 and 15Mn2Nb after quenching from intercritical (γ + α) temperatures were studied.
Abstract: The microstructure and tensile properties of steels 15 and 15Mn2Nb after quenching from intercritical (γ + α) temperatures were studied. It was shown that steel 15 has an “island-type” dual-phase structure (ferrite plus martensite) after intercritical quenching, while the steel 15Mn2Nb has the “lamellar” structure with alternatively arranged ferrite and martensite needles. Such a lamellar dual-phase structure obviously has improved strength and ductility and is suggested as one of the effective methods in developing high strength dual-phase steels.

7 citations