Results 181 to 190 of about 890,762 (338)

The Human Element in Aircraft Accidents

open access: green, 1958
Frank B. Berry, Vernie A. Stembridge
openalex   +2 more sources

Practical Applications of Secondary/Extractive Electrospray Ionization (SESI): A Versatile Tool for Real‐Time Chemical Analysis

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT In the 1980s, researchers discovered the remarkable ability of electrospray plumes to effectively ionize gas‐phase molecules via secondary ionization. Around 20 years later—coinciding with the ambient mass spectrometry revolution—secondary electrospray ionization (SESI) and extractive electrospray ionization (EESI) coupled to mass spectrometry
Xin Luo   +5 more
wiley   +1 more source

Intelligent optimized design of novel high‐temperature titanium alloys

open access: yesMaterials Genome Engineering Advances, EarlyView.
This paper presents a novel strategy that integrates machine learning with multiobjective optimization to design high‐temperature titanium alloys that simultaneously meet multiple objectives and exhibit superior comprehensive mechanical properties. This approach provides valuable references for the subsequent composition design of high‐temperature ...
Lingzhi Liu   +5 more
wiley   +1 more source

NExT‐LF: A Novel Operational Modal Analysis Method via Tangential Interpolation

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Operational modal analysis (OMA) is vital for identifying modal parameters under real‐world conditions, yet existing methods often face challenges with noise sensitivity and stability. This study introduces NExT‐LF, a novel method that combines the well‐known Natural Excitation Technique (NExT) with the Loewner Framework (LF). NExT enables the
Gabriele Dessena   +3 more
wiley   +1 more source

Uncertainty Quantification for Nonlinear Vibration of Supercritical Drive Shaft With a Dry Friction Damper

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The supercritical drive shaft is becoming increasingly popular in helicopter transmission system. Dry friction dampers are specially employed to ensure the supercritical shafts crossing the critical speed safely. Due to design tolerances, manufacturing errors and time‐varying factors, the parameters of the damper are inherently uncertain ...
Liyao Song   +4 more
wiley   +1 more source

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