Results 81 to 90 of about 627,761 (301)

Stress relaxation in diblock copolymers [PDF]

, 2008
We study stress relaxation in a strongly segregated lamellar mesophase of diblock copolymers. We consider the extreme limit in which chains are highly stretched and with their junction points confined to narrow interfaces. A lamella can be divided into "stress blobs" at some distance $z$ from the interface, with well defined local modulus $G(z, )$ at ...
Nemirovsky, Adolfo M., Witten, Thomas A.
openaire   +2 more sources

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

One-dimensional stress relaxation of cohesive soils and its relationship with secondary compression

Yantu gongcheng xuebao, 2019
The behaviors of one-dimensional relaxation have been studied by many researchers. However, the method for deducing the stress relax formulas is usually complicated.
GAO Yan-bin 1, 2, LIU Jia-dan 1, 2
doaj   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Aggregates relaxation in a jamming colloidal suspension after shear cessation

, 2005
The reversible aggregates formation in a shear thickening, concentrated colloidal suspension is investigated through speckle visibility spectroscopy, a dynamic light scattering technique recently introduced [P.K. Dixon and D.J. Durian, Phys. Rev.
B. J. Berne, David Lasne, Francesca Ianni, J. Bergenholtz, Pascal Hébraud, R. K. Iler, Régis Sarcia   +6 more
core   +1 more source

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

Advanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu, Timon Steinhoff, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Christian Klose, Ludger Overmeyer, Hans‐Jürgen Maier, Nina Merkert   +8 more
wiley   +1 more source

Anomalous stress relaxation in random macromolecular networks

, 2001
Within the framework of a simple Rouse-type model we present exact analytical results for dynamical critical behaviour on the sol side of the gelation transition. The stress-relaxation function is shown to exhibit a stretched-exponential long-time decay.
Adam, Adam, Adolf, Annette Zippelius, Biroli, Bollobás, Bray, Broderix, Broderix, Broderix, Cates, Chambon, Colby, de Gennes, de Gennes, Doi, Durand, Gingold, Hansen, Harris, Henning Löwe, Klein, Kurt Broderix, Lodge, Martin, Martin, Meir, Osaki, Peter Müller, Scanlan, Solf, Stauffer, Stenull, Venerus, Venkataraman, Vernon, Winte, Winter   +37 more
core   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Stress relaxation and mechanical properties of RL-1973 and PD-200-16 silicone resin sponge materials [PDF]

Stress relaxation tests were conducted by loading specimens in double-lap shear to a preselected strain level and monitoring the decay of stress with time.
Ham, J. S., Mccoy, R., Noel, J. S., Saylak, D.   +3 more
core   +1 more source

Viscoelastic Effect on Hydrodynamic Relaxation in Polymer Solutions

, 2002
The viscoelastic effect on the hydrodynamic relaxation in semidilute polymer solutions is investigated. From the linearized two-fluid model equations, we predict that the dynamical asymmetry coupling between the velocity fluctuations and the viscoelastic
Adam M., Brochard F., Brochard F., de Gennes P. G., Doi M., Doi M., Edwards S. F., Freed K. F., Helfand H., Milner S., Onuki A., Onuki A., Onuki A., Takenaka M., Tanaka H., Tanaka H., Taniguchi T.   +16 more
core   +2 more sources