Results 111 to 120 of about 386,637 (303)

Simulation Study on Charge Distribution Characteristics of Gas–Solid Interface Based on Improved Saturation Current Density Method

工程科学与技术
Free charge accumulation on the surface of solid insulation under direct current (DC) voltage distorts the electric field distribution on the insulator’s surface, affecting discharge behavior, such as creeping flashover.
Shan LIU, Zhe JIANG, Shuwen YUAN, Yang LI, Gengsheng XIE, Qingyu WANG, Zongren PENG   +6 more
doaj  

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Soil carbon saturation : evaluation and corroboration by long-term incubations

, 2008
Although current assessments of agricultural management practices on soil organic C (SOC) dynamics are usually conducted without any explicit consideration of limits to soil C storage, it has been hypothesized that the SOC pool has an upper, or ...
Conant, Richard T., Six, Johan, Paustian, Keith, Plante, Alain F., Stewart, Catherine E.   +4 more
core   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Distance Digital Algorithm Immune to Saturation of Current Transformer [PDF]

, 2008
Saturation of current transformers due to slowly decaying primary current D.C. components cause errors in reproduction of the current fundamental harmonic. Most of the relays are more or less sensitive to the errors.
Wiszniewski, A, Szafran, J
core   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

An Experimental High‐Throughput Approach for the Screening of Hard Magnet Materials

Advanced Engineering Materials, EarlyView.
An entire workflow for the high‐throughput characterization and analysis of compositionally graded magnetic films is presented. Characterization protocols, data management tools and data analysis approaches are illustrated with test case Sm(Fe, V)12 based films.
William Rigaut, Pierre Le Berre, Hamdi Jaballah, Lukas Fink, Victor Poline, Richard Haettel, Stéphane Grenier, Gilbert Chahine, Ewen Bellec, Guillaume Buatier, Wilfried Hortschitz, Santa Pile, Thomas Schrefl, Nils Blanc, Yuan Hong, Thibaut Devillers, Nora M. Dempsey   +16 more
wiley   +1 more source

Current transformer saturation detection by cross-correlation with independent target signal

Ain Shams Engineering Journal
The saturation of current transformers (CTs) leads to distortion in secondary current, potentially causing malfunction in protective relays within power systems.
Mahmoud M. Elgamasy, Mohamed S. Zaky, Ahmed F. Zobaa, Mahmoud A. Elsadd   +3 more
doaj   +1 more source

Uncertainty in Photoconductance Measurements of the Emitter Saturation Current

, 2016
We determine uncertainty in photoconductance (PC) measurements of the emitter saturation current density (J 0e). A Monte Carlo method is used to calculate the impact of uncertainty from the input parameters including the test equipment calibration, the ...
Grant, Nicholas, Price, Chris J., Hamieri, Ziv, Thomson, Andrew, Yan, Di, Spurgin, Jack   +5 more
core   +1 more source