Results 31 to 40 of about 210,774 (257)

The Degree to which Kindergarten Teachers in Jordan Possess Scientific and Engineering Practices in Light of the Next Generation Science Standards (NGSS)

دراسات: العلوم التربوية, 2022
Objectives: This study aims to identify the degree to which kindergarten teachers in Jordan possess scientific and engineering practices in light of the Next Generation Science Standards (NGSS).
Mohammad Khair N. Nawafleh, Amal Fakhari Jaradat   +1 more
doaj   +1 more source

Releasing systems for aerospace industry based upon shape memory alloys: Characterization of materials for actuators [PDF]

, 2018
Releasing and deployment maneuvers carried out during space satellites launching are usually performed by utilizing pyrotechnics loads. However, it is considered convenient to replace this technique by others not requiring explosives (Non Explosive ...
Glücksberg, Andrés, Soul, Hugo Ramon, Yawny, Alejandro Andres   +2 more
core   +4 more sources

Efecto de la implantación iónica de nitrógeno en el comportamiento frente a la corrosión in vitro del NiTi

Revista de Metalurgia, 2008
Durante la pasada década se han empleado diferentes técnicas de modificación superficial para mejorar la biocompatibilidad de la aleación de NiTi con memoria de forma. Este trabajo se centra en el estudio de la influencia del N implantado con una energía
R. Barcos, A. Conde, J. J. de Damborenea, J. A. Puértolas   +3 more
doaj   +1 more source

Unconventional precipitation and martensitic transformation behaviour of Ni-rich NiTi alloy fabricated via laser-directed energy deposition

Virtual and Physical Prototyping, 2023
In this study, we report an unconventional precipitation and martensitic transformation behaviour of directly aged Ni-rich NiTi alloys fabricated via laser-directed energy deposition (LDED).
Jingtao Kang, Ruidi Li, Dan Zheng, Huiting Wu, Minbo Wang, Pengda Niu, Jian Li, Xinyan Liu, Duan Lai, Tiechui Yuan   +9 more
doaj   +1 more source

Shape memory effect of NiTi alloy processed by equal-channel angular pressing followed by post deformation annealing

, 2014
Processing by Equal-Channel Angular Pressing (ECAP) is generally considered superior to most other SPD techniques because it uses relatively large bulk samples.
Langdon, Terence G., Nili-Ahmadabadi, Mahmoud, Shahmir, Hamed   +2 more
core   +1 more source

Comparison of Cyclic Fatigue Resistance of Heat-Treated Nickel-Titanium Reciprocating Instruments at the Intracanal Temperature

Balkan Journal of Dental Medicine, 2021
Background/Aim: The aim of the present study was to compare the cyclic fatigue resistance of NiTi files running with reciprocal motion and having different characteristics (RPC Blue, WOG, EndoArt Wise Reciproc Gold, EndoArt Wise Reciproc Blue) at the ...
Keskin Neslihan Büşra, Güneç Gürkan
doaj   +1 more source

Nonconventional production technologies for NiTi shape memory alloys [PDF]

, 2009
The development of new production technologies for NiTi Shape Memory Alloys (SMAs) is always challenging. Recently, we introduced two powder metallurgical (PM) processing routes involving mechanical activation of elemental powder mixtures and ...
Correia, J.B., Fernandes, F. M. Braz, Gaffet, E., Hahn, H., Lattemann, M., Martins, Isabel M., Neves, Filipe, Oliveira, M., Suffner, J., Wang, T. Y.   +9 more
core   +1 more source

Tribological Performance of 60NiTi Alloy Under Varying Contact Conditions and Elevated Temperatures in Linear Reciprocating Sliding

Advanced Engineering Materials, EarlyView.
This study investigates the tribological response of 60NiTi alloy under dry, water‐lubricated and high‐temperature conditions. The alloy exhibits decreasing wear volume and friction with increasing temperature due to the formation of protective oxide layers. The work clarifies dominant wear mechanisms and demonstrates the suitability of 60NiTi for high‐
Anthony Onyebuchi Okoani, Miguel Angel Selles, Maziar Ramezani   +2 more
wiley   +1 more source

Characterization of a measurement setup for the thermomechanical characterization of curved shape memory alloy actuators

Current Directions in Biomedical Engineering, 2019
The bend and free recovery (BFR) test according to ASTM F2082 is a standard method to determine the transition temperatures of Nitinol shape memory alloys (SMAs).
Suzaly Nuha, Keller Marie Christina, Hügl Silke, Lenarz Thomas, Rau Thomas S., Karsten Elvira   +5 more
doaj   +1 more source

Processing of Porous NITI Preforms for NITI/MG Composites

Archives of Metallurgy and Materials, 2019
NiTi alloys are successfully used in engineering and medical applications because of their properties, such as shape memory effect, superelasticity or mechanical strength. A composite with Mg matrix, due to its vibration damping properties, can be characterized by low weight and good vibration damping properties.
A. Kucharczyk, K. Naplocha, M. Tomanik
openaire   +2 more sources