Results 111 to 120 of about 1,049,521 (250)

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

Robust and minimum norm pole assignment with periodic state feedback [PDF]

, 1998
A computational approach is proposed to solve the minimum norm and/or robust pole assignment problem for linear periodic discrete-time systems. The proposed approach uses a periodic Sylvester equation based parametrization of the periodic pole ...
Varga, A.
core  

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Pole Figures for Response to Technical Comment on "Spin Coating Epitaxial Films"

, 2019
Pole figures for spin coated films. In each figure (A) is the data as reported in Science 364, 166-169 (2019), and (B) is the data that is re-scaled with fewer contours so as to minimize that background intensity that is due primarily to the ...
Kelso, Meagan V. (6956906), Tubbesing, John Z. (6956912), Mahenderkar, Naveen K., Kelso, Meagan V., Switzer, Jay A. (6956903), Chen, Q. (6929153), Mahenderkar, Naveen K. (6956909), Chen, Q., Switzer, Jay A., Tubbesing, John Z.   +9 more
core   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

Advanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

Optimizing hot workability regions for a novel TZ73 magnesium alloy: a processing map approach

Journal of Materials Science: Materials in Engineering
Newly developed Mg‒based alloy with composition of Mg–7Sn–3Zn (wt.%) (TZ73) was prepared by the squeeze casting technique and homogenized at 300 °C for 24 h. A processing map approach was adopted to identify safe hot workability regions.
Krishna Kamlesh Verma, Subodh Kumar, Satyam Suwas   +2 more
doaj   +1 more source

Robust and Minimum Norm Pole Assignment with Periodic State Feedback [PDF]

, 2000
A computational approach is proposed to solve the minimum norm or robust pole assignment problem for linear periodic discrete-time systems. The proposed approach uses a periodic Sylvester-equation-based parametrization of the periodic pole assignment ...
Varga, A.
core  

Self‐Cleaning Sensor Surfaces for Long‐Term Environmental Monitoring

Advanced Engineering Materials, EarlyView.
Long‐term use of unattended outdoor sensors without soiling or biofouling is achieved through generation of a micro‐ and nanorough cuvette surface by combing hydrophobic nanoparticles with fluorinated polymers, crosslinked and surface‐attached through CHic chemistry. The coating demonstrates self‐cleaning behavior and prolonged outdoor stability, which
Sanam Kumari Rajak, Yasmina Frey, Ulrike Wallrabe, Oswald Prucker, Jürgen Rühe   +4 more
wiley   +1 more source

Elastic Property Anisotropy in Inconel 718 Alloy Specimens Fabricated by Wire Arc Additive Manufacturing

Фізика і хімія твердого тіла
This study investigates the anisotropy of elastic properties in Inconel 718 alloy specimens fabricated via Wire Arc Additive Manufacturing (WAAM). The crystallographic texture of the specimens was characterized using inverse pole figures (IPF) obtained ...
V.V. Usov, N.M. Shkatulyak, S.I. Iovchev, D.V. Pavlenko, D.E. Molochkov, R.A. Kulikovsky   +5 more
doaj   +1 more source

Simulation‐Based Analysis of Insert Pull‐Out in Nickel‐Polyurethane Hybrid Foams Using CT‐Derived Geometries

Advanced Engineering Materials, EarlyView.
CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz, Jonas Fell, Hendrik Jost, Stefan Diebels, Hans‐Georg Herrmann   +4 more
wiley   +1 more source