Results 41 to 50 of about 20,400 (255)

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

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

Bioremediation of lunar regolith simulant through mycorrhizal fungi and plant symbioses enables chickpea to seed

Scientific Reports
Food sustainability is a significant challenge for long-term space travel. Plants can provide fresh nutrition, reducing reliance on packaged foods. Using Lunar regolith simulant (LRS), we tested a methodology to create a productive growth medium for ...
Jessica Atkin, Elizabeth Pierson, Terry Gentry, Sara Oliveira Santos   +3 more
doaj   +1 more source

ISRU and ISFR Science and Technology—A Review of the Last 15 Years

Technologies
In situ resource utilization (ISRU) and in situ fabrication and repair (ISFR) are critical research and technological paradigms for future space exploration.
Giacomo Cao, Alberto Cincotti, Alessandro Concas, Antonio Depau, Giacomo Fais, Nicola Lai, Roberta Licheri, Antonio Mario Locci, Selena Montinaro, Roberto Orrù, Gabriele Traversari   +10 more
doaj   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Pneumatic Regolith Transfer Systems for In Situ Resource Utilization [PDF]

Earth and Space 2010, 2010
This slide presentation reviews the testing of a pneumatic system for transfering regolith, to be used for In Situ Resource Utilization (ISRU). Using both the simulated microgravity of parabolic flight and ground testing, the tests demonstrated that lunar regolith can be conveyed pneumatically into a simulated ISRU oxygen production plant reactor.
Robert P. Mueller, Ivan I. Townsend, III, James G. Mantovani   +2 more
openaire   +1 more source

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

Frontiers and prospects of lunar mining technology

Meitan xuebao
The moon harbors exceptionally abundant and strategically valuable spatial and material resources. As human lunar exploration gradually enters a new phase of development and utilization, lunar mining is transitioning from a strategic concept to tangible ...
Heping XIE, Cunbao LI, Yachen XIE, Yifei LIU, Cong LI, Haichun HAO, Jun WANG, Guoqing ZHANG, Xiting LONG, Yiqiang LU   +9 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Toward sustainable additive manufacturing of PEKK/Martian regolith composite for lightweight structural applications on Mars

Additive Manufacturing Letters
Advances in sustainable resource utilization and innovative manufacturing techniques are driving efforts toward the prospect of human settlement on Mars, led by programs such as SpaceX’s Occupy Mars initiative.
Farshad Malekpour, Marjan Abdali, Mehdi Hojjati, Krzysztof Skonieczny   +3 more
doaj   +1 more source