Results 21 to 30 of about 115,033 (265)

Current Tracking Adaptive Control of Brushless DC Motors

International Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García, Axel Coronado‐Andrade, Gerardo Espinosa‐Pérez, Luis Alvarez‐Icaza   +3 more
wiley   +1 more source

Short-term mechanical properties and microstructure of coastal cement soil modified by sugarcane bagasse ash

Results in Engineering
Sugarcane bagasse ash is a kind of agricultural waste with a large quantity and good volcanic ash reactivity, it is necessary to find a way to reasonably utilize it to prevent environmental pollution caused by long-term accumulation.
Liming Yao, Jiawei Yang, Xukun Ma, Pengfei Wei, Yunfeng Wang, Wei Wang, Na Li   +6 more
doaj   +1 more source

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Soil utilization of solid waste: Small-strain dynamic properties and microscopic mechanism of phosphogypsum-modified coastal cement soil

Journal of Materials Research and Technology
Phosphogypsum (PG), a solid waste from the wet process phosphoric acid industry, but the utilization rate is low at present. The effect of phosphogypsum and cement on small strain dynamic characteristics of coastal soft soil was studied by resonance ...
Yingdi Pang, Na Li, Meixin Fan, Ping Jiang, Aizhao Zhou, Wei Wang   +5 more
doaj   +1 more source

Effect of the soil-structure interaction on performance assessment of the energy-based cumulative damage index in concrete reinforced frames [PDF]

Journal of Structural and Construction Engineering, 2016
In most of the conventional design methods, the soil beneath the structure is assumed to be rigid, but this assumption is not true in reality. Up to now, many studies have been performed concerning the interaction effect on the structure response but the
Reza Vahdani, Majid Bitarafan, Mohammad Iman Khodakarami   +2 more
doaj   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Mechanical properties and microscopic mechanism of gypsum and polyurethane modified waste slurry

Materials Research Express
This study employs a composite method involving gypsum and polyurethane to modify waste slurry to create a recycled roadbed material, aiming to promote the resource utilization of waste slurry.
Baozhong Wang, Pengfei Yu, Fuping Wang, Ping Jiang, Wei Wang, Na Li, Guanzhong Zhou   +6 more
doaj   +1 more source

Study on the electrical conductivity, strength properties and failure modes of concrete incorporating carbon fibers and iron tailings

Journal of Materials Research and Technology
This study aims to explore the feasibility of preparing conductive concrete using carbon fibers and iron tailings and its application in snow and ice melting on roads, and to solve the problem of excessive stacking of iron tailings.
Ping Jiang, Xingchen Hu, Na Li, Wei Wang, De Zhang, Haihua Zhan, Ru Song, Song Yang   +7 more
doaj   +1 more source

Permanent excavation interaction and adjacent building under earthquake (Case study: Entrance ramp of the city train and hamyari-shahrdari building) [PDF]

Journal of Structural and Construction Engineering, 2019
Deep excavation have a direct effect on stresses and strains of surrounding soil, and it leads to the change in static and dynamic response of adjacent structures of the excavation.
Jahangir Khazaei, Afshin Ghobadian
doaj   +1 more source

Analysis of the Second Order Effect of the SSI on the Building during a Seismic Load

Infrastructures, 2021
The type and the properties of the soil can potentially intensify the internal forces on buildings during seismic loads. To predict the effects of the soil parameters on the soil–structure interaction of buildings, it is necessary to consider the soil ...
El Mehdi Echebba, Hasnae Boubel, Abdelhay El Omari, Mohamed Rougui, Mimoun Chourak, Fadi Hage Chehade   +5 more
doaj   +1 more source