Results 141 to 150 of about 80,326 (308)

Wind-Induced Responses of Nonlinear Angular Motion for a Dual-Spin Rocket

Aerospace
Fin-stabilized guided rockets exhibit ballistic characteristics such as low initial velocity, high flight altitude, and long flight duration, which render their impact point accuracy and flight stability highly susceptible to the influence of wind.
Jianwei Chen, Liangming Wang, Zhiwei Yang   +2 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Development of an Angular Stiffness Sensor to Measure Dental Implant Stability In Vitro

This investigation aims to develop an angular stiffness sensor intended for measuring dental implant stability in bone. The sensor hardware included a tiny eccentric motor and an accelerometer to measure a flex constant of an implant with its abutment ...
Yen-Wei Chen, Yifeng Liu, I. Y. Shen, Michel Dard, Weiwei Xu, Kanako Nagatomo, Jihai Zhou   +6 more
core   +1 more source

Stability analysis of high-speed spin-stabilized supercavitating projectiles during water entry

Applied Ocean Research
This study explores the fluid-structure interaction (FSI) phenomena associated with spin-stabilized supercavitating projectiles and the influence on the structural stability of the projectiles.
Changle Hao, Jianjun Dang, Chuang Huang, Kai Luo, Kan Qin   +4 more
doaj   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Stability Of Large Damped Flexible Spacecraft With Stored Angular Momentum

, 1985
Vibrational stability of large flexible structurally damped spacecraft carrying internal angular momentum and undergoing large rigid body rotations is analysed modeling the systems as elastic continua.
Maharana, Prashanta K., Shrivastava, Shashi K.   +1 more
core  

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

Angular acceleration estimation and feedback control: An experimental investigation

, 2007
Angular acceleration estimation and its application in acceleration feedback control are investigated experimentally in the paper. In combination of Newton Predictor (NP) with Kalman Filter (KF), a new predictive estimator for angular acceleration ...
Xu WL(徐卫良), He YQ(何玉庆), Han JD(韩建达)   +2 more
core  

Stability of angular confinement and rotational acceleration of a diatomic molecule in an optical centrifuge

, 2001
Modern femtosecond technology can be used to create laser pulses that induce controlled spinning of anisotropic molecules to very high angular momentum states ("optical centrifuge"). In this paper we extend our previous study [M. Spanner and M. Ivanov, J.
Kristina M. Davitt, Davitt, Kristina, Misha Yu. Ivanov, Michael Spanner, Ivanov, Misha Yu, Spanner, Michael   +5 more
core   +1 more source