Results 121 to 130 of about 4,299 (279)

The Pointing Error Due To Laser Propagation in Space Plasma for TianQin Gravitational Wave Detection

Space Weather
TianQin, a space‐borne gravitational wave observatory, is designed to detect gravitational‐wave signals via laser interferometry. As the inhomogeneous space plasma surrounds the inter‐satellite laser links, the propagation of the laser in space plasma ...
Shenwei Zhou, Wei Su, Shiyuan Zhou, Chaofan Li, Jixiang Zhang   +4 more
doaj   +1 more source

Single Smooth Waveform Command‐Shaping Control of Overhead Crane Systems Utilizing Two‐Stage Acceleration–Deceleration Profile for Short‐Moving Point‐to‐Point Maneuver

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Modern industrial demand for efficient material handling in confined spaces has driven the need for overhead cranes capable of short‐distance point‐to‐point maneuvers without compromising payload stability. Conventional three‐stage shaper profiles, experiencing acceleration, cruising, and deceleration, become inefficient or infeasible for ...
Mohammed Alfares, Jasem Baroon, Khaled Alhazza   +2 more
wiley   +1 more source

A Passive Low‐Frequency, High‐Sensitivity Diamagnetic Levitation Accelerometer

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Despite the great potential of diamagnetic levitation accelerometers in detecting low‐frequency and weak motion, there is still a demand to further enhance their sensitivity for geophysical and microgravity applications. In this study, a straightforward structural modulating approach is presented to enhance the sensitivity of diamagnetic ...
Yuanping Xu, Yang Wang, Lu Yang, Jin Zhou, Zhiqiang Zhang, Yanxiao Lei   +5 more
wiley   +1 more source

A Review of Advances in Composite Materials, Structural Optimization, and Machine Learning for Wind Turbine Blades: Challenges and Future Perspectives

Polymer Composites, EarlyView.
Overview of the holistic engineering lifecycle and core research pillars for wind turbine blades. ABSTRACT This paper reviews recent advancements across the lifecycle of wind turbine blades, focusing on three interconnected areas: advanced composites, structural optimization, and machine learning (ML) diagnostics. In materials, we highlight progress in
Kemal Hasirci, Denizhan Yavas, Alaeddin Burak Irez   +2 more
wiley   +1 more source

Dynamical 3-Space: Gravitational Wave Detection and the Shnoll Effect

, 2013
Shnoll has investigated the non-Poisson scatter of rate measurements in various phenomena such as biological and chemical reactions, radioactive decay, photodiode current leakage and germanium semiconductor noise, and attributed the scatter to cosmophysical factors.
Rothall, David P, Cahill, Reginald T
openaire   +2 more sources

Correction to: Gravitational wave detection by interferometry (ground and space)

Living Reviews in Relativity, 2022
Sheila Rowan, Jim Hough
openaire   +1 more source

Recent Development of the Laser Interferometer for Taiji Space Gravitational Wave Detection

Research
In this study, we have designed a full-function interferometer OB (optical bench) for the Taiji program and, for the first time, provided detailed parameter specifications for its interferometer system. Additionally, we constructed a first-generation Taiji interferometer OB and ground test system and conducted preliminary testing ...
Heshan Liu, Juan Wang, Wei Tao, Keqi Qi, Shaoxin Wang, Ruihong Gao, Pan Li, Peng Dong, Wei Sha, Ziren Luo, Wenrui Hu   +10 more
openaire   +1 more source

Gravitational wave searches using the DSN (Deep Space Network)

, 1988
The Deep Space Network Doppler spacecraft link is currently the only method available for broadband gravitational wave searches in the 0.01 to 0.001 Hz frequency range.
Armstrong, J. W., Nelson, S. J.
core  

Experimental Investigation of Moisture Movement During Freeze–Thaw Cycles and Its Effect on Physical Rock Weathering in Low‐Porosity Alpine Limestone

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The progressive weakening of alpine rockwalls through subcritical cracking, driven by repeated low‐magnitude stress processes, plays a key role in alpine rock weathering. Laboratory studies using acoustic emission (AE) monitoring have shown that thermal stresses from freeze–thaw cycling induce crack propagation, with recent work highlighting ...
Andrew Mitchell, Oliver Sass
wiley   +1 more source

The STR Line-of-Sight Pointing and Acquisition in the Gravitational Wave Detection Interstellar Laser Link

IEEE Photonics Journal
In space gravitational wave detection, the establishment of inter-satellite laser links is a prerequisite for the smooth execution of the detection mission.
Sibo Liang, Xin Zhao, Tong Wang, Cheng Han   +3 more
doaj   +1 more source