Results 51 to 60 of about 312,874 (254)

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Constant modulus algorithm for blind equalization under impulsive noise environments

Tongxin xuebao, 2009
The presence of α stable distributed ambient channel noise in wireless systems can degrade the per-formance of existing constamt modulus（CM） equalizers.The problem of blind equalization in noisy communication channels was investigated by addressing the ...
GUO Ying1, QIU Tian-shuang1, TANG Hong1, PARK Yong-wan2   +3 more
doaj   +2 more sources

Online Tuning Strategy for Multi-loop SISO PI Control Algorithms in Multivariable Interactive Systems

Journal of King Saud University: Engineering Sciences, 2002
Tuning of PI control algorithms for coupled multi input multi output (MIMO) systems is a challenging problem. This paper extends a previously developed model-based adaptive tuning method to handle the tuning problem of coupled multivariable systems.
Emad M. Ali
doaj   +1 more source

Uncertainty Handling in Structural Damage Detection via Non-Probabilistic Meta-Models and Interval Mathematics, a Data-Analytics Approach

Applied Sciences, 2021
Recent advancements in sensor technology have resulted in the collection of massive amounts of measured data from the structures that are being monitored.
Ramin Ghiasi, Mohammad Noori, Wael A. Altabey, Ahmed Silik, Tianyu Wang, Zhishen Wu   +5 more
doaj   +1 more source

The Star Formation History of the Local Group dwarf galaxy Leo I [PDF]

, 1999
We present a quantitative analysis of the star formation history (SFH) of the Local Group dSph galaxy Leo I, from the information in its HST [(V-I),I] color-magnitude diagram (CMD).
Antonio Aparicio, Aparicio A., Azzopardi M., Bertelli G., Carme Gallart, Carraro G., Cesare Chiosi, Duquennoy A., Elson R. A. W., Eskridge P. B., Fagotto F., Fagotto F., Frogel J. A., Giampaolo Bertelli, Halbwachs J. L., Hernandez X., Hurley J., Kroupa P., Kroupa P., Kroupa P., Kroupa P., Mermilliod J. C., Mighell K. J., Mighell K. J., Mighell K. J., Mighell K. J., Nelder J. A., Ng Y. K., Reimers D., Stetson P. B., Wendy L. Freedman, Westerlund B. E.   +31 more
core   +3 more sources

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

On the issue of studying the structural and mechanical characteristics of bovine cancellous bone [PDF]

Известия Саратовского университета. Новая серия: Математика. Механика. Информатика
Mechanical experiments with human bones are difficult, so many authors study mechanical parameters of bovine cancellous bone, which is close to human bone in its properties.
Parshina, Irina F., Ivanov, Dmitry V., Dol, Aleksander Viktorovich, Vindokurov, Iliya V., Bessonov, Leonid Valentinovich, Tashkinov, Mikhail A.   +5 more
doaj   +1 more source

Calculation Method of the Design Thickness of a Frozen Wall with Its Inner Edge Radially Incompletely Unloaded

Applied Sciences, 2023
The technology for freezing shaft sinking is widely used for shafts to pass through deep, unstable alluvia with the continuous exploitation of mineral resources. Due to the technique using the sectional excavation and shaft lining construction adopted in
Chenchen Hu, Zhijiang Yang, Tao Han, Weihao Yang   +3 more
doaj   +1 more source

Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam

Advanced Engineering Materials, EarlyView.
Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source

Optimizing Properties of Aluminum-Based Nanocomposites by Genetic Algorithm Method

Journal of Advanced Materials in Engineering, 2015
Based on molecular dynamics simulation results, a model was developed for determining elastic properties of aluminum nanocomposites reinforced with silicon carbide particles.
M.R. Dashtbayazi, R. Esmaeili
doaj   +2 more sources