Special Issue on Recent High Efficiency and Heavy Grinding. High Performance Steel Grinding using SG/Alumina Wheels.

Demand for the high-precision and high-efficiency machining of hard ceramics, such as silicon carbide for semiconductors and hardened steel for molding dies, has significantly increased for optical and medical devices as well as for powered devices in automobiles. Certain types of hard metals can be machined by deterministic precision-cutting processes. However, hard and brittle ceramics, hardened steel for molds, and semiconductor materials have to be machined using precision abrasive technologies, such as grinding, polishing, and ultrasonic vibration technologies that use diamond super abrasives. The machining of high-precision components and their molds/dies using abrasive processes is very difficult due to their complex and nondeterministic natures as well as their complex textured surfaces. Furthermore, the development of new cutting-edge tools or machining methods and the active use of physicochemical phenomena are key to the development of high-precision and high-efficiency machining. This special issue features 11 research papers on the most recent advances in precision abrasive technologies. These papers cover the following topics: - Characteristics of abrasive grains in creep-feed grinding - Quantitative evaluation of the surface profiles of grinding wheels - ELID grinding using elastic wheels - Nano-topographies of ground surfaces - Novel grinding wheels - Grinding characteristics of turbine blade materials - Polishing mechanisms - Polishing technologies using magnetic fluid slurries - Application of ultrasonic vibration machining - Turning and rotary cutting technologies This issue is expected to help its readers to understand recent developments in abrasive technologies and to lead to further research. We deeply appreciate the careful work of all the authors, and we thank the reviewers for their incisive efforts.

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High-Performance Hardware Interpolation Architecture for High Efficiency Video Coding Decoder

International Review on Computers and Software (IRECOS) ◽

10.15866/irecos.v11i9.9753 ◽

2016 ◽

Vol 11 (9) ◽

pp. 764

Author(s):

Lella Aicha Ayadi ◽

Nihel Neji ◽

Hassen Loukil ◽

Mouhamed Ali Ben Ayed ◽

Nouri Masmoudi

Keyword(s):

Video Coding ◽

High Performance ◽

High Efficiency ◽

High Efficiency Video Coding

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BETHLEHEM LUKENS PLATE HPS-70W

Alloy Digest ◽

10.31399/asm.ad.sa0506 ◽

2000 ◽

Vol 49 (12) ◽

Keyword(s):

Fracture Toughness ◽

Corrosion Resistance ◽

Tensile Properties ◽

High Performance ◽

Iron And Steel ◽

Cooperative Agreement ◽

Federal Highway ◽

High Performance Steel ◽

Department Of The Navy ◽

Steel Institute

Abstract BETHLEHEM LUKENS PLATE HPS-70W is a high-performance steel (HPS) developed through a cooperative agreement among the Federal Highway Administration (FHWA), the American Iron and Steel Institute (AISI), and the Department of the Navy. This steel is an improved version of ASTM A 709 grade 70W. This datasheet provides information on composition and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming and joining. Filing Code: SA-506. Producer or source: Bethlehem Lukens Plate.

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Investigation on the La Replacement and Little Additive Modification of High-Performance Permanent Magnetic Strontium-Ferrite

Processes ◽

10.3390/pr9061034 ◽

2021 ◽

Vol 9 (6) ◽

pp. 1034

Author(s):

Ching-Chien Huang ◽

Chin-Chieh Mo ◽

Guan-Ming Chen ◽

Hsiao-Hsuan Hsu ◽

Guo-Jiun Shu

Keyword(s):

High Performance ◽

Single Phase ◽

Permanent Magnets ◽

High Efficiency ◽

Cobalt Content ◽

Preparation Condition ◽

Milling Process ◽

Experimental Parameters ◽

La Substitution ◽

Hard Magnets

In this work, an experiment was carried out to investigate the preparation condition of anisotropic, Fe-deficient, M-type Sr ferrite with optimum magnetic and physical properties by changing experimental parameters, such as the La substitution amount and little additive modification during fine milling process. The compositions of the calcined ferrites were chosen according to the stoichiometry LaxSr1-xFe12-2xO19, where M-type single-phase calcined powder was synthesized with a composition of x = 0.30. The effect of CaCO3, SiO2, and Co3O4 inter-additives on the Sr ferrite was also discussed in order to obtain low-temperature sintered magnets. The magnetic properties of Br = 4608 Gauss, bHc = 3650 Oe, iHc = 3765 Oe, and (BH)max = 5.23 MGOe were obtained for Sr ferrite hard magnets with low cobalt content at 1.7 wt%, which will eventually be used as high-end permanent magnets for the high-efficiency motor application in automobiles with Br > 4600 ± 50 G and iHc > 3600 ± 50 Oe.

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New hole transport styrene polymers bearing highly π-extended conjugated side-chain moieties for high-performance solution-processable thermally activated delayed fluorescence OLEDs

Polymer Chemistry ◽

10.1039/d1py00026h ◽

2021 ◽

Vol 12 (11) ◽

pp. 1692-1699

Author(s):

Ji Hye Lee ◽

Jinhyo Hwang ◽

Chai Won Kim ◽

Amit Kumar Harit ◽

Han Young Woo ◽

...

Keyword(s):

High Performance ◽

High Efficiency ◽

Delayed Fluorescence ◽

Hole Transport ◽

Side Chain ◽

Solution Processed ◽

Thermally Activated Delayed Fluorescence ◽

Thermally Activated ◽

Turn On ◽

Solution Processable

New polystyrene-based polymers with high π-extended hole transport pendants were synthesized to obtain a low turn-on voltage and high efficiency in solution-processed green TADF-OLEDs.

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Experimental study on fatigue performance of Q420qD high-performance steel cross joint in complex environment

Asian Journal of Civil Engineering ◽

10.1007/s42107-021-00351-6 ◽

2021 ◽

Author(s):

Haigen Cheng ◽

Cong Hu ◽

Yong Jiang

Keyword(s):

Fatigue Life ◽

High Performance ◽

Steel Structure ◽

Steel Structures ◽

Fatigue Tests ◽

Fatigue Performance ◽

Corrosive Media ◽

Joint Connection ◽

High Performance Steel ◽

The Cross

AbstractThe steel structure under the action of alternating load for a long time is prone to fatigue failure and affects the safety of the engineering structure. For steel structures in complex environments such as corrosive media and fires, the remaining fatigue life is more difficult to predict theoretically. To this end, the article carried out fatigue tests on Q420qD high-performance steel cross joints under three different working conditions, established a 95% survival rate $$S{ - }N$$ S - N curves, and analyzed the effects of corrosive media and high fire temperatures on its fatigue performance. And refer to the current specifications to evaluate its fatigue performance. The results show that the fatigue performance of the cross joint connection is reduced under the influence of corrosive medium, and the fatigue performance of the cross joint connection is improved under the high temperature of fire. When the number of cycles is more than 200,000 times, the design curves of EN code, GBJ code, and GB code can better predict the fatigue life of cross joints without treatment, only corrosion treatment, and corrosion and fire treatment, and all have sufficient safety reserve.

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Neighborhood Energy Modeling and Monitoring: A Case Study

Energies ◽

10.3390/en14123716 ◽

2021 ◽

Vol 14 (12) ◽

pp. 3716

Author(s):

Francesco Causone ◽

Rossano Scoccia ◽

Martina Pelle ◽

Paola Colombo ◽

Mario Motta ◽

...

Keyword(s):

High Performance ◽

High Efficiency ◽

Early Stage ◽

Energy Performance ◽

Monitoring Plan ◽

Performance Targets ◽

Carrier Energy ◽

Zero Carbon ◽

Energy Grid

Cities and nations worldwide are pledging to energy and carbon neutral objectives that imply a huge contribution from buildings. High-performance targets, either zero energy or zero carbon, are typically difficult to be reached by single buildings, but groups of properly-managed buildings might reach these ambitious goals. For this purpose we need tools and experiences to model, monitor, manage and optimize buildings and their neighborhood-level systems. The paper describes the activities pursued for the deployment of an advanced energy management system for a multi-carrier energy grid of an existing neighborhood in the area of Milan. The activities included: (i) development of a detailed monitoring plan, (ii) deployment of the monitoring plan, (iii) development of a virtual model of the neighborhood and simulation of the energy performance. Comparisons against early-stage energy monitoring data proved promising and the generation system showed high efficiency (EER equal to 5.84), to be further exploited.

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