Results 81 to 90 of about 668,877 (302)

Additive Manufacturing of NiTi Shape Memory Alloys for Elastocaloric Applications: A Review

Advanced Functional Materials, EarlyView.
Additive manufacturing enables complex NiTi architectures that overcome key limitations in elastocaloric refrigeration, including poor heat transfer and high mechanical work input. This review surveys recent advances in LPBF‐ and DED‐fabricated NiTi shape memory alloys for elastocaloric applications, highlighting process–structure–performance ...
Ignatius Andre Setiawan, Mohammad Mehrali, Jaka Tušek, Shiva Mohajerani, Xiebin Wang, Dermot Brabazon, Mohammad Elahinia, Mehrshad Mehrpouya   +7 more
wiley   +1 more source

Thermal compensator for closed-cycle helium refrigerator [PDF]

, 1979
The wave length of an infrared, semiconductor laser diode having an output frequency that is dependent on the diode temperature is maintained substantially constant by maintaining the diode temperature constant.
Hillman, J. J., Jennings, D. E.
core   +1 more source

Mechanochromism of Glassy Polymers Enabled by a Loop‐Forming Supramolecular Mechanophore

Advanced Functional Materials, EarlyView.
The supramolecular mechanophore LOOP is covalently introduced into glassy polymers, capable of reporting force‐induced pre‐failure damage and local fracture events in polymer glasses. Under different mechanical deformation modes, including grinding, tensile stretching, and scratching, LOOP probes irreversible events in polymer glasses through a ...
Linlin Deng, Chantal Graafsma, Felix Meyenhofer, Iulia Scarlat, Luca Bertossi, Christoph Weder, Jess M. Clough   +6 more
wiley   +1 more source

Comparison of die geometry for cold drawing of multi-rifled steel tubes

Metalurgija, 2019
Multi-rifled tubes, i.e. tubes with multiple inner grooving are used in heat exchangers and boilers, providing favourable heat transfer conditions due to turbulent flow of cooling medium. Therefore, strict requirements are placed on the geometry of inner
P. Bella, P. Bucek, M. Ridzon, M. Mojzis, L. Parilak   +4 more
doaj  

Evaluation of experimentally observed asymmetric distributions of hardness, strain and residual stress in cold drawn bars by FEM-simulation

Journal of Materials Research and Technology, 2018
The purpose of this paper is to investigate the correlation of strain and hardness parameters in a drawing process chain of an SAE 1045 steel bar. The present work discusses the application of the experimental and numerical method of analysis, based on ...
Juliana Zottis, Carla Adriana Theis Soares Diehl, Alexandre da Silva Rocha   +2 more
doaj   +1 more source

Role of heat and mechanical treatments in the fabrication of superconducting Ba0.6K0.4Fe2As2 ex-situ Powder-In-Tube tapes

, 2015
Among the recently discovered Fe-based superconducting compounds, the (K,Ba)Fe2As2 phase is attracting large interest within the scientific community interested in conductor developments.
Genovese, A., Johrendt, D., Malagoli, A., Marchner, S., Putti, M., Wiesenmayer, E.   +5 more
core   +1 more source

Exploring an Alternative to mRNA Vaccine Cold Chain Storage: MRNA‐Lipid Nanoparticle Stability When Dried in a Polymer Matrix

Advanced Functional Materials, EarlyView.
The nanostructure, size, and function of mRNA‐loaded lipid nanoparticles are evaluated before drying, within polymer microneedles, and after rehydration. The results reveal the polymer and LNP loadings required to recover nanostructure and preserve the delivery performance in dry‐state formulations.
Brendan P. Dyett, Shahad K. Alsaiari, John L. Daristotle, Timothy A. Forster, Alicia Lau, Dhruv Varshney, Rania Afaneh, Andrew R. Hanna, Charles Sloane, David Mankus, Haitao Yu, Jiali Zhai, DongSoo Yun, Lisa H. Tostanoski, Abigail Lytton‐Jean, Dan H. Barouch, Charlotte E. Conn, Robert Langer, Ana Jaklenec, Calum J. Drummond   +19 more
wiley   +1 more source

Microstructure Evolution and Strengthening Mechanism of 2 100 MPa Grade Cold-Drawn Steel Wires for Bridge Cables [PDF]

Teshugang
The microstructure and strengthening mechanism of 2 100 MPa grade steel wires for bridge cables during cold drawing were studied using a universal tensile testing machine， transmission electron microscope （TEM）， and X-ray diffractometer （XRD）， and the ...
Yang Xu, Bao Siqian, Kang Xiaolong, Hu Jiarui, Liu Chen, Tian Renming   +5 more
doaj   +2 more sources

Ductility, bending and wrapping ability relationship in wires made of electromagnetically cast ultrafine grained Al–0.5Fe and Al–0.5Fe–0.3Cu alloys

Frontier Materials & Technologies
The research status on such functional properties, as bending capability, wrapping capability and ductility of conductive Al–Fe and Al–Fe–Cu alloys wires is uncertain.
Andrey E. Medvedev, Olga O. Zhukova, Darya D. Fedotova, Elvira D. Khafizova, Mikhail M. Motkov, Maxim Yu. Murashkin   +5 more
doaj   +1 more source

Deformation prediction and Finite Element Analyses of precision seamless tubes during cold drawing

MATEC Web of Conferences, 2017
This paper deals with the deformation of precision seamless tubes during the cold drawing process, using Finite Element Methods. The value of strain obtain by stereology measurement of degree grain boundaries deformation are compared with simulation ...
Necpal Martin, Martinkovič Maroš, Buranský Ivan   +2 more
doaj   +1 more source