Steel foam for structures: A review of applications, manufacturing and material properties

The objective of this paper is to provide a state-of-the-art review for the structural application, manufacturing, material properties, and modeling of a new material: steel foam. Foamed steel includes air voids in the material microstructure and as a result introduces density as a new design variable in steel material selection. By controlling density the engineering properties of steel components may be altered significantly: improvement in the weight-to-stiffness ratio is particularly pronounced, as is the available energy dissipation and thermal resistivity. Full-scale applications of steel foams in civil structures have not yet been demonstrated. Therefore, existing applications demonstrating either proof-of-concept for steel foam, or full-scale use of aluminum foams in situations with clear civil/structural analogs are highlighted. Adoption of steel foam relies on the manufacturing method, particularly its cost, and the resulting properties of the steel foam. Therefore, published methods for producing steel foam are summarized, along with measurements of steel foam structural (modulus, yield stress, etc.) and non-structural (thermal conductivity, acoustic absorption, etc.) properties. Finally, existing models for predicting foamed steel material properties are summarized to highlight the central role of material density. Taken in total the existing research demonstrates the viability of steel foams for use in civil/structural applications, while also pointing to areas where further research work is required. © 2011 Elsevier Ltd. All rights reserved

Actively conformable aerodynamic control surfaces

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2002.Includes bibliographical references (leaves 66-68).by Mark Alexander Kepets.S.M

Scenarios for using 5G networks in enterprises of the republic of Belarus

В статье рассмотрены тенденции развития рынка услуг 5G услуг в промышленном секторе. Рассмотрена возможность использования IIoT и 5G сетей на промышленных предприятиях Республики Беларусь. Описаны основные препятствия при внедрении IIoT на промышленных предприятиях. Проведен анализ ключевых сценариев использования IIoT и 5G сетей на промышленных предприятиях Республики Беларусь. Описаны существующие препятствия и модели развития сетей 5G на территории Республики Беларусь. The article examines the development trends of the 5G services market in the industrial sector. The possibility of using IIoT and 5G networks at industrial enterprises of the Republic of Belarus was considered. The main obstacles in the implementation of IIoT in industrial enterprises are described. The analysis of key scenarios for the use of IIoT and 5G networks at industrial enterprises of the Republic of Belarus is carried out. The existing obstacles and models for the development of 5G networks in the territory of the Republic of Belarus are described