Results 161 to 170 of about 87,347,625 (209)

A Robust Method for Extracting Anti-Loosening Lines for Turbine Unit Bolts Under Multi-Factor Influences. [PDF]

Sensors (Basel)
Zhang T, Ran Y, Gong H, Wu T, Ma T, Guo J, Yuan F.   +6 more
europepmc   +1 more source

Long‐Time Thermal Aging of Perfluoroalkoxy Polymers for Electrical Insulation: Structural and Physical Properties Evolutions

Journal of Applied Polymer Science, Volume 143, Issue 39, October 15, 2026.
This work focuses on the investigation of the influence of a long‐time exposition to accelerated thermal aging on the physicochemical structure and properties of PFA. Results show a decrease in the melting temperature and crystal ratio due to chemical aging.
Victor Henri, Julien Chedaille, Pierre Henrard, Eric Dantras   +3 more
wiley   +1 more source

In Situ Dynamic Measurement of Blade Collision Warning Parameters for Coaxial Twin-Rotor Helicopters. [PDF]

Sensors (Basel)
Zheng W, Qiu Z.
europepmc   +1 more source

Thermo‐Fluid‐Structural Coupling Analysis of Twin‐Screw Compressor Rotors Under Variable Operating Conditions

Applied Research, Volume 5, Issue 5, October 2026.
A validated thermo‐fluid‐structural coupling framework reveals that rotor von Mises stress exhibits a non‐monotonic trend with discharge pressure, reaching a minimum at 0.3 MPa (3000 rpm)—identifying a structurally optimal operating point that minimizes mechanical loading and extends fatigue life.
Sen Zhao, Diankui Gao, Bin Zhao
wiley   +1 more source

Deep Reinforcement Learning Based Autonomous Decision‐Making for Cooperative Uncrewed Aerial Vehicles: A Search and Rescue Real World Application

Journal of Field Robotics, Volume 43, Issue 7, Page 4382-4401, October 2026.
ABSTRACT This paper presents the first end‐to‐end framework that combines guidance, navigation, and centralized task allocation for multiple UAVs performing autonomous search‐and‐rescue (SAR) in GNSS‐denied indoor environments. A twin delayed deep deterministic policy gradient controller is trained with an artificial potential field (APF) reward that ...
Thomas Hickling, Maxwell Hogan, Abdulla Tammam, Nabil Aouf   +3 more
wiley   +1 more source

Aerial drones for graft transport - ready for takeoff? [PDF]

Transpl Int
Mesnard B, Scalea JR, Shah JK, Branchereau J.   +3 more
europepmc   +1 more source

Assessment of Wind‐Farm‐Atmosphere Interactions at the Sørlige Nordsjø II Large Offshore Wind Farm: A Comparative LES and Analytical Wake Study

Wind Energy, Volume 29, Issue 10, October 2026.
ABSTRACT Sørlige Nordsjø II (SNII) is a planned large‐scale offshore wind farm in the Southern Norwegian North Sea near the Danish border, with phased development targeting a total installed capacity of up to 3 GW. For projects of this scale, site assessments are typically performed using computationally efficient analytical models.
Mostafa Bakhoday Paskyabi, Xu Ning
wiley   +1 more source

Early warning signals for loss of control in complex systems. [PDF]

Proc Natl Acad Sci U S A
van Beers JJ, Scheffer M, Solanki P, van de Leemput IA, van Nes EH, de Visser CC.   +5 more
europepmc   +1 more source

A Novel Distributed Sensor Network to Assess Wind Turbine Blade Acoustics for Structural Health Monitoring

Wind Energy, Volume 29, Issue 10, October 2026.
ABSTRACT To reduce the need for scheduled wind turbine blade inspections and large‐scale repairs, a novel distributed acoustic sensing system for monitoring the structural health of wind turbine blades is proposed. This integral passive monitoring system utilizes a sparse array of in‐blade multimodal sensors and a single blade‐external downtower sensor,
Connor Pozzi, Calvin Ng, Sage Lyon, Yan Luo, Christopher Niezrecki, Murat Inalpolat   +5 more
wiley   +1 more source

On the Non-Asymptotic Stability of a Directional Gyroscope. [PDF]

Sensors (Basel)
Binder YI, Larionov DY, Shalymov RV.
europepmc   +1 more source