Results 61 to 70 of about 36,758 (316)

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

Advanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du, Takahiro Kaneko, Xinyu Yan, Takahito Ohmura, Kyosuke Yoshimi   +4 more
wiley   +1 more source

Turboelectric Distributed Propulsion System Modelling [PDF]

, 2013
The Blended-Wing-Body is a conceptual aircraft design with rear-mounted, over wing engines. Turboelectric distributed propulsion system with boundary layer ingestion has been considered for this aircraft.
Liu, Chengyuan
core  

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

An earth pole-sitter using hybrid propulsion [PDF]

, 2010
In this paper we investigate optimal pole-sitter orbits using hybrid solar sail and solar electric propulsion (SEP). A pole-sitter is a spacecraft that is constantly above one of the Earth's poles, by means of a continuous thrust.
Colin R. Mcinnes, Colin McInnes, Ceriotti, M., Matteo Ceriotti, McInnes, C.R.   +4 more
core   +1 more source

Architecture of Ti–6Al–4V thin-walled microthrusters fabricated via laser powder bed fusion

Virtual and Physical Prototyping
Advances in small-satellite platforms have intensified the demand for microthrusters that offer structural robustness under stringent mass constraints.
Jeongrak Lee, Junghoon Lee, Rae Eon Kim, Seonghyeon Kim, Kyungtae Kim, Youngsam Kwon, Hongjae Kang, Gunsu Yun, Dongsik Kim, Anna Lee, Hyoung Seop Kim   +10 more
doaj   +1 more source

Optimal Design of Inlet Passage for Waterjet Propulsion System Based on Flow and Geometric Parameters

Advances in Materials Science and Engineering, 2019
As an important overcurrent component in a waterjet propulsion system, the inlet passage is used to connect the propulsion pump and the bottom of the propulsion ship.
Weixuan Jiao, Li Cheng, Di Zhang, Bowen Zhang, Yeping Su, Chuan Wang   +5 more
doaj   +1 more source

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

Advanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad, Aleksander Kostka, Gowtham Arivanandhan, Yujiao Li, Alan Savan, Manfred Kohl, Alfred Ludwig   +6 more
wiley   +1 more source

The Propulsion Committee: final report and recommendations to the 25th ITTC [PDF]

, 1970
Details the investigation and findings of the 25th ITTC Propulsion Committee over the period 2005-2008. Tasks were as follows:1. Update the state-of-the-art for propulsion systems emphasizing developments since the 2005 ITTC conference.2.
Kim, K., Minchev, A., Van, S.H., Semionicheva, E.Y., Becchi, P., Korkut, E., Turnock, S.R., Ando, J., Zhou, W.X.   +8 more
core  

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Experimental Study on the Propulsion Performance of Laser Ablation Induced Pulsed Plasma

Aerospace
This study investigates the influence of electromagnetic fields on the propulsion performance of laser plasma propulsion. Based on the principle of pulsed plasma thrusters, an electromagnetic field is utilized to accelerate laser plasma, achieving ...
Hang Song, Jifei Ye, Ming Wen, Haichao Cui, Wentao Zhao   +4 more
doaj   +1 more source