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Akademický článek

Manufacturing of large size nickel-based single crystal turbine guide vanes by grain continuator technology

Autor: XIAO Jiuhan, JIANG Weiguo, LI Kaiwen, HAN Dongyu, WANG Dong, WANG Di, WANG Hua, CHEN Lijia, LOU Langhong

Publikováno v: Journal of Aeronautical Materials, Vol 43, Iss 3, Pp 22-31 (2023)

Large size nickel-based single crystal twin turbine guide vanes（TGVs）were prepared by grain continuator（GC）technology. Directional solidification was performed in a high-rate-solidification（HRS）Bridgman vacuum furnace. Then, the macro-etc

Externí odkaz: https://doaj.org/article/e29e7115cd874720bcbe0dd1b0ced366

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Akademický článek

Creep behavior of silica bar core during directional solidification process of single crystal superalloy

Autor: JIANG Weiguo, HAN Dongyu, DONG Lin, LI Kaiwen, ZHAO Debiao, WANG Ruichun, REN Yuyan, LI Qiang, LI Yanzhao

Publikováno v: Journal of Aeronautical Materials, Vol 42, Iss 6, Pp 57-64 (2022)

Creep characterization of different diameter silica bar core during directional solidification of the single crystal superalloy was investigated by suspension method. The scanning electron microscope (SEM) was employed to observe the microstructure o

Externí odkaz: https://doaj.org/article/d6b326ec30ae4aaf9da27424684d4677

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Report

Distributed Adaptive Gradient Algorithm with Gradient Tracking for Stochastic Non-Convex Optimization

Autor: Han, Dongyu, Liu, Kun, Lin, Yeming, Xia, Yuanqing

Publikováno v: IEEE Transactions on Automatic Control (2024)

This paper considers a distributed stochastic non-convex optimization problem, where the nodes in a network cooperatively minimize a sum of $L$-smooth local cost functions with sparse gradients. By adaptively adjusting the stepsizes according to the

Externí odkaz: http://arxiv.org/abs/2403.11557