Results 31 to 40 of about 42,193 (264)

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Three dimensional cooperative guidance for intercepting a manoeuvering target

IET Control Theory & Applications
In this paper, an optimal distributed guidance law is proposed for cooperatively intercepting a manoeuvering target in three dimensional (3D) framework. Based on the 3D kinematic model of interceptors and the target, the kinematic engagement equations in
Chang Yu, Bing Zhu, Jianying Zheng, Wei Wang   +3 more
doaj   +1 more source

The control algorithm of whole angle mode for HRG based on the vector composition

EURASIP Journal on Wireless Communications and Networking, 2021
The Hemispherical Resonator Gyroscope (HRG) has many advantages such as high precision, high reliability and long life-time, it is widely used in the space-launcher and the satellites.
Wanliang Zhao, Yuxiang Cheng, Shaoliang Li, Lijun Song   +3 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Multi‐target cognitive electronic reconnaissance for unmanned aerial vehicles based on scene reconstruction

IET Radar, Sonar & Navigation
Model‐free deep reinforcement learning (DRL) is regarded as an effective approach for multi‐target cognitive electronic reconnaissance (MCER) missions. However, DRL networks with poor generalisation can significantly reduce mission completion rates when ...
Yun Zhang, Shixun You, Yunbin Yan, Qiaofeng Ou, Jie Liu, Ling Chen, Xiang Zhu   +6 more
doaj   +1 more source

A Knowledge‐Based Approach for Understanding and Managing Additive Manufacturing Data

Advanced Engineering Materials, EarlyView.
Additive manufacturing processes generate a large amount of data. Effectively managing, understanding, and retrieving information from this data remains a major challenge. Therefore, we propose an ontology‐based approach to integrate heterogeneous data, enable semantic queries, and support decision‐making.
Mina Abd Nikooie Pour, Prithwish Tarafder, Anton Wiberg, Huanyu Li, Johan Moverare, Patrick Lambrix   +5 more
wiley   +1 more source

Comparative Analysis of Dynamic Models and Adaptive Process-Noise Modeling for Kalman-Based Aerial Target Tracking

IEEE Access
Accurate target tracking is essential for the effectiveness of air surveillance, air-traffic monitoring, and defense-support systems. This paper presents a comparative study of several dynamic motion models applied to Kalman-based filters for aerial ...
Arthur Medeiros Macedo, Karl Heinz Kienitz   +1 more
doaj   +1 more source

Good-Quality and High-Efficiency Dicing for Thick LiNbO₃ Wafers Using Picosecond Laser Pulses

Micromachines, 2019
Lithium niobate (LiNbO3) has become popular with applications in electronics and communication industries due to its excellent electro-optical and nonlinear properties.
Mingwei Lei, Wenyan Gao, Guang Li, Xinping Wu, Benhai Li, Xuefeng Wang, Junlong Wang   +6 more
doaj   +1 more source

A High-Accuracy, High Anti-Noise, Unbiased Frequency Estimator Based on Three CZT Coefficients for Deep Space Exploration Mission

Sensors, 2022
Deep space exploration navigation requires high accuracy of the Doppler measurement, which is equivalent to a frequency estimation problem. Because of the fence effect and spectrum leakage, the frequency estimation performances, which is based on the FFT
Weitao Lu, Lue Chen, Zhen Wang, Jianfeng Cao, Tianpeng Ren   +4 more
doaj   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source