Results 71 to 80 of about 2,274,078 (285)

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

Multiple degree of freedom optical pattern recognition [PDF]

Three general optical approaches to multiple degree of freedom object pattern recognition (where no stable object rest position exists) are advanced. These techniques include: feature extraction, correlation, and artificial intelligence.
Casasent, D.
core   +1 more source

A further 'degree of freedom' in the rotational evolution of stars

, 2005
Observational and theoretical investigations provide evidence for non-uniform spot and magnetic flux distributions on rapidly rotating stars, which have a significant impact on their angular momentum loss rate through magnetised winds.
Allain, Altschuler, Barnes, Belcher, Bouvier, Bouvier, Buzasi, Charbonneau, Collier Cameron, Donati, Donati, Donati, Donati, Donati, Granzer, Hempelmann, Holzwarth, Ivanova, Jardine, Jardine, Jardine, Jianke, Jordan, Kawaler, Keppens, Keppens, Keppens, Kippenhahn, Krishnamurthi, Krishnamurthi, M. Jardine, MacGregor, Mackay, Marino, Marsden, Mathioudakis, McIvor, McIvor, Messina, Mestel, Mestel, Michel, Montesinos, Noyes, O'Dell, Pinsonneault, Pizzolato, Rüdiger, Sakurai, Schatzman, Schrijver, Schüssler, Skumanich, Soderblom, Solanki, Stauffer, Strassmeier, Thompson, Unruh, V. Holzwarth, Vilhu, Vilhu, Weber   +62 more
core   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

Magnetic Actuators and Suspension for Space Vibration Control [PDF]

The research on microgravity vibration isolation performed at the University of Virginia is summarized. This research on microgravity vibration isolation was focused in three areas: (1) the development of new actuators for use in microgravity isolation; (
Allaire, Paul E., Knospe, Carl R., Lewis, David W.   +2 more
core   +1 more source

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

Solar Photovoltaic Tracking Systems for Electricity Generation: A Review

Energies, 2020
This paper presents a thorough review of state-of-the-art research and literature in the field of photovoltaic tracking systems for the production of electrical energy.
Sebastijan Seme, Bojan Štumberger, Miralem Hadžiselimović, Klemen Sredenšek   +3 more
doaj   +1 more source

Charge degree of freedom and single-spin fluid model in YBa_2Cu_4O_8

, 1999
We present a 17O nuclear magnetic resonance study in the stoichiometric superconductor YBa_2Cu_4O_8. A double irradiation method enables us to show that, below around 180 K, the spin-lattice relaxation rate of plane oxygen is not only driven by magnetic,
A. Abragam, A. J. Millis, A. Lombardi, A. P. Litvinchuck, A. S. Alexandrov, A. Suter, A. Suter, A. Suter, A. Suter, B. S. Shastry, D. Brinkmann, E. Andrew, F. Barriquand, F. C. Zhang, F. Mila, H. A. Mook, H. Monien, H. Monien, I. Mangelschots, I. Mangelschots, J. A. Martindale, J. P. Lu, J. Ranninger, J. Roos, J. Van Kranendonk, M. Bankay, M. Horvatić, M. Mali, M. Takigawa, N. Bulut, P. C. Hammel, R. E. Walstedt, R. E. Walstedt, T. Moriya, V. J. Emery, V. J. Emery, Y. Obata, Y. Obata, Y. Zha   +38 more
core   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

METAMORPHIC DESIGN AND DEGREE OF FREEDOM ANALYSIS ABOUT PARALLEL MECHANISM FOR ANKLE REHABILITATION

Jixie qiangdu, 2021
In order to achieve the movement demands of sprained ankle patients in different rehabilitation stages,this paper proposes a kind of metamorphic parallel mechanism for ankle rehabilitation,which can obtain the switch of 3 SPS/PS motion and 3 SPS/S motion
CHEN GengBiao, YI KuanHan
doaj