Results 71 to 80 of about 7,795 (299)

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Analysis and design of a sharp‐rejection wideband bandstop filter with multi‐transmission zeros and reflection zeros

IET Microwaves, Antennas & Propagation, 2021
Analysis and design of a wideband bandstop filter with multi‐transmission zeros (TZs) and reflection zeros (RZs) are presented. The proposed topology consists of N‐1 shunt open‐circuited stubs (OCSs) cascaded through N‐sections of transmission lines, and
Hongyu Chen, Xiaolong Wang, Geyu Lu
doaj   +1 more source

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

Quad Band Filter with Controllable Transmission Zeros using Vertical and Diagonal Coupling of Triple and Dual Step Impedance Resonators

A quad-band pass filter using back-to-back Tri-State Step Impedance Resonator (TSSIR) for Wireless Applications is presented in this article. The achieved passband center frequencies are 2.45 GHz (for WLAN), 3.5 GHz (for WiMAX), 5.4 GHz (for WLAN), and 8.
Anirban Neogi, Jyoti Ranjan Panda, Sudhakar Sahu   +2 more
core   +1 more source

Three element resonator lowpass filter

IET Microwaves, Antennas & Propagation, 2023
The conventional lowpass prototype filter with the finite transmission zeros close‐to‐band edge often yields negative circuit elements that lead to a practical difficulty of physical realizations.
Yingjie Di, Xiyuan Wang, An Chen
doaj   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source

A Dual-Band Waveguide Bandpass Filter with Adjustable Transmission Zeros

, 2018
This paper presents a planar insert-loaded compact, dual-pole, dual-band, waveguide bandpass filter with adjustable multiple transmission zeros. Two identical inserts are placed on the transverse plane of a standard WR-90 waveguide at 8.41[Formula: see ...
Amit Bage, Sushrut Das
core   +1 more source

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

Advanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang, Aparajita Pramanik, Sandipan Sen, Shubhashis Dixit, Marcel Muench, R. J. Vikram, Daniel Schliephake, Yolita M. Eggeler, Ankur Chauhan, Martin Heilmaier, Alexander Kauffmann   +10 more
wiley   +1 more source

Effects of broken time-reversal symmetry on transmission zeros in the Aharonov-Bohm interferometer

, 2019
In this paper, we study the behavior of the transmission zeros in the closed Aharonov-Bohm (AB) interferometer with an embedded scattering center in one arm and the corresponding change in the transmission phase when the time-reversal symmetry is broken ...
Ryu, CM, Kim, TS, Cho, SY, Kim, CK
core   +1 more source

Two compact configurations for implementing transmission zeros in microstrip filters [PDF]

, 2004
This contribution presents compact structures for the implementation of transmission zeros using the zero shifting property. First, two open-loop resonators operating at different resonances are employed.
Melcón Álvarez, Alejandro, Guglielmi, Marco, Cañete Rebenaque, David, Quesada Pereira, Fernando Daniel, Pascual García, Juan   +4 more
core   +1 more source