Results 11 to 20 of about 7,037,410 (298)

Diagnosis of Combination Faults in a Planetary Gearbox using a Modulation Signal Bispectrum based Sideband Estimator [PDF]

, 2015
This paper presents a novel method for diagnosing combination faults in planetary gearboxes. Vibration signals measured on the gearbox housing exhibit complicated characteristics because of multiple modulations of concurrent excitation sources, signal ...
Gu, Fengshou, Rehab, Ibrahim, Ball, Andrew, Abdallaa, Gaballa M., Tian, Xiange   +4 more
core   +4 more sources

Misalignment diagnosis of a planetary gearbox based on vibration analysis [PDF]

, 2014
As a critical power transmission system, planetary gearbox is widely used in many industrial important machines such as wind turbines, aircraft turbine engines, helicopters.
Gu, Fengshou, Ball, Andrew, Zhen, Dong, Abdalla, Gaballa, Tian, Xiange   +4 more
core   +3 more sources

Summary of the Third International Planetary Dunes Workshop: Remote Sensing and Image Analysis of Planetary Dunes, Flagstaff, Arizona, USA, June 12-15, 2012 [PDF]

, 2013
The Third International Planetary Dunes Workshop took place in Flagstaff, AZ, USA during June 12-15, 2012. This meeting brought together a diverse group of researchers to discuss recent advances in terrestrial and planetary research on aeolian bedforms.
Yizhaq, Hezi, Chojnacki, Matthew, Bishop, Mark Ashley, Bishop, Marc A., Tirsch, Daniela, Neakrase, Lynn D. V., Bourke, Mary C., Newman, Claire E., Rubin, Dave M., Zimbelman, James R., Dinwiddie, Cynthia L., Horgan, Briony H., Neakrase, Lynn D.V., Hayward, Rosalyn K., Michaels, Timothy I., Bishop, Mark A., Zimbleman, James R., Horgan, Briony H. N., Burr, Devon M., Titus, Timothy N., Fenton, Lori K., Fenton, Lori, Kerber, Laura, Le Gall, Alice, Rubin, David M.   +24 more
core   +1 more source

Pitting damage levels estimation for planetary gear sets based on model simulation and grey relational analysis [PDF]

, 2011
The planetary gearbox is a critical mechanism in helicopter transmission systems. Tooth failures in planetary gear sets will cause great risk to helicopter operations.
Gu, Fengshou, Hu, Niaoqing, Cheng, Zhe, Qin, Guojun   +3 more
core   +3 more sources

Long extra-tropical planetary wave propagation in the presence of slowly varying mean flow and bottom topography. II: ray propagation and comparison with observations [PDF]

, 2003
Ray theory is used to predict phase and group velocities for long planetary waves under realistic, albeit slowly varying, oceanic conditions. The results are compared with local theory using fields smoothed to the same amount (9° latitude/longitude) as ...
Killworth, Peter D., Marchesiello, Patrick, Blundell, Jeffrey R., Killworth, P.D., Peter D. Killworth, Shchepetkin, Alexander, Mcwilliams, James, C., Jeffrey R. Blundell, Mcwilliams, James,, Blundell, J.R.   +9 more
core   +1 more source

ANTARCTICA: A TREASURE–TROVE FOR PLANETARY SCIENCES. AUSTRALASIAN MICROTEKTITES FROM EAST ANTARCTICA [PDF]

, 2020
The planetary science community has benefitted greatly from research in Antarctica. The discovery of large accumulations of meteorites in blue ice fields on the polar plateau since 1969 and of cosmic dust in Antarctic ice, snow and supraglacial moraines ...
Folco L
core  

Summary of the Second International Planetary Dunes Workshop: Planetary Analogs — Integrating Models, Remote Sensing, and Field Data, Alamosa, Colorado, USA, May 18–21, 2010 [PDF]

, 2010
The Second International Planetary Dunes Workshop took place in Alamosa, Colorado, USA from May 18–21, 2010. The workshop brought together researchers from diverse backgrounds to foster discussion and collaboration regarding terrestrial and extra ...
Tirsch, D., Lancaster, N., Lori K. Fenton, Hayward, R.K., Titus, T.N., Bishop, Marc A., Tirsch, Daniela, Andrew Valdez, Bourke, M.C., Bristow, Charles S., Bourke, Mary C., Valdez, Andrew, Michaels, T.I., Lancaster, Nicolas, Rosalyn K. Hayward, Briony H. Horgan, Horgan, B.H., Horgan, Briony H., Bishop, M.A., Mary C. Bourke, Timothy N. Titus, Timothy I. Michaels, Hayward, Rosalyn K., Michaels, Timothy I., Charles S. Bristow, Mark A. Bishop, Bristow, Charlie S., Daniela Tirsch, Fenton, L.K., Titus, Timothy N., Nicholas Lancaster, Fenton, Lori   +31 more
core   +1 more source

Structure augmented monocular saliency for planetary rovers

Robotics and Autonomous Systems, 2017
This paper proposes a novel object detection method based on the visual saliency model in order to reliably detect objects such as rocks from single monocular planetary images. The algorithm takes advantage of the relatively homogeneous and distinct albedos present in planetary environments such as Mars or the Moon to extract a Digital Terrain Model of
Conrad Spiteri, Affan Shaukat, Yang Gao 0002   +2 more
openaire   +5 more sources

A framework to guide planetary health education [PDF]

, 2021
People around the world are increasingly facing the pressing challenges of today's interconnected environmental, social, and health crises. The COVID-19 pandemic has been an important wake-up call reminding us that we need a healthy planet to ensure the ...
Aguire, Alonso, Walpole, S, Martin, Olwenn V., Evert, J, Zylstra, M, Martin, Olwenn, Hackett, Finola, Zylstra, Matthew, Wilson, L, Patz, J, Osano, O, Faerron Guzmán, Carlos A, Maric, F, Potter, T, Chimbari, M, Xu, C, Osano, Odipo, Guzmán, Carlos A. Faerron, Howard, C, Maric, Filip, Potter, Teddie, Barros, Enrique, Aguirre, A. Alonso, Bayles, B, Bayles, Brett, Astle, B, Barros, E, Evert, Jessica, Martin, O, Trienekens, N, Krzyzek, A, Guzmán, CAF, Howard, Courtney, Walpole, Sarah, Redvers, Nicole, LeClair, Jessica, Wilson, Lynda, Patz, Jonathan, Chimbari, Moses, Hackett, F, El-Abbadi, N, Xu, Chenchen, Jennings, Jonathan, Trienekens, Noortje, Bayles, Brett R., Jennings, J, Astle, Barbara, Aguirre, AA, Krzyzek, Amy, LeClair, J, El-Abbadi, Naglaa, Redvers, N   +51 more
core   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source