Results 31 to 40 of about 204,888 (292)
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 +4 more
wiley +1 more source
A Novel Adaptive Algorithm Addresses Potential Problems of Blind Algorithm
International Journal of Antennas and Propagation, 2016 A hybrid algorithm called constant modulus least mean square (CMLMS) algorithm is proposed in order to address the potential problems existing with constant modulus algorithm (CMA) about its convergence. It is a two-stage adaptive filtering algorithm and
Muhammad Yasin, Muhammad Junaid Hussain
doaj +1 more source
A semi-blind algebraic constant modulus algorithm [PDF]
2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004 A modification to the algebraic constant modulus (ACM) algorithm is proposed that exploits the presence of known pilot symbols within the transmitted data. The pilot symbols are used to place soft constraints on the subspace in which the ACM solution should lie, and relax some of the identifiability conditions required by ACM.
openaire +1 more source
Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley +1 more source
IEEE AccessAiming at the problem that the feedforward neural network blind equalization algorithm has a slow convergence rate and a large steady-state error when equalizing the high-order non-constant modulus signals, a trigonometric coordinate transformation blind
Na Liu, Zuoxun Wang, Haiwen Wei
doaj +1 more source
Constant-Modulus-Waveform Design for Multiple-Target Detection in Colocated MIMO Radar
Sensors, 2019 For improving the performance of multiple-target detection in a colocated multiple-input multiple-output (MIMO) radar system, a constant-modulus-waveform design method is presented in this paper.
Bingfan Liu, Baixiao Chen, Minglei Yang
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Advanced Engineering Materials, EarlyView.Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova +2 more
wiley +1 more source
Effect of signal to interference ratio on adaptive beamforming techniques
Journal of King Saud University: Engineering Sciences, 2018 The capability of adaptive antenna array lies in forming higher gain in the user directions and lower gain in the interferer directions. The technique used to produce such radiation pattern by calculating the excitation weights are called the adaptive ...
Smita Banerjee, Ved Vyas Dwivedi
doaj +1 more source
Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
wiley +1 more source
Leida xuebao, 2022 Outstanding beamforming performance of the Multiple-Input Multiple-Output (MIMO) radar can be achieved by deploying a large number of active antenna elements.
Huan WAN +3 more
doaj +1 more source