Results 101 to 110 of about 225,073 (308)

Random vibration analysis of space flight hardware using NASTRAN [PDF]

open access: yes
During liftoff and ascent flight phases, the Space Transportation System (STS) and payloads are exposed to the random acoustic environment produced by engine exhaust plumes and aerodynamic disturbances.
Thampi, S. K., Vidyasagar, S. N.
core   +1 more source

Skyrme-QRPA calculations for low-lying excitation modes in deformed neutron-rich nuclei

open access: yes, 2009
Low-frequency modes of excitation in deformed neutron-rich nuclei are studied by means of the quasiparticle random-phase approximation on the Skyrme-Hartree-Fock-Bogoliubov mean field.
Yoshida, Kenichi
core   +1 more source

Single‐ and Dual‐Atom Configurations in Atomically Dispersed Catalysts for Lithium–Sulfur Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Single‐atom and dual‐atom‐based atomically dispersed catalysts (ADCs) effectively address the shuttle effect and sluggish redox kinetics in Li–S batteries. With nearly 100% atomic utilization and tunable coordination environments, ADCs enhance LiPSs adsorption, lower conversion barriers, and accelerate sulfur redox reactions.
Haoyang Xu   +4 more
wiley   +1 more source

Static and dynamic analysis of different MYSat frame structure

open access: yesJournal of Mechanical Engineering and Sciences
The development of CubeSats have been advanced following the miniaturization of electronic components. While CubeSats have been extensive used in various missions, most prior research has focused on validating their structural design to comply with ...
Ahmad Shaqeer Mohamed Thaheer   +3 more
doaj   +1 more source

Design and Analysis of Shock and Random Vibration Isolation of Operating Hard Disk Drive in Harsh Environment

open access: yesShock and Vibration, 2009
An effective vibration isolation system is important for hard disk drives (HDD) used in a harsh mechanical environment. This paper describes how to design, simulate, test and evaluate vibration isolation systems for operating HDD subjected to severe ...
Hendri Harmoko   +3 more
doaj   +1 more source

A new method of vibration analysis for the diagnosis of impeller in a centrifugal pump [PDF]

open access: yes, 2014
Centrifugal pumps are widely used in many important industries such as power generation plants, chemical processes and petroleum refiners. The condition monitoring of centrifugal pumps is highly regarded by many researchers and users to minimize ...
Abdulrahman, Albraik   +5 more
core  

Structure Formation in Butterfly Scales: Interplay of Genetic Control, Mechanical Instabilities, and Dynamic Material Properties

open access: yesAdvanced Functional Materials, EarlyView.
Butterfly wing scales are intricate cuticular functional nanosctructures. This perspective suggests that spatially varying material properties, cytoskeletal constraints, and growth‐driven mechanical instabilities shape the resulting nanoscale architectures created from single cells.
Anupama Prakash   +10 more
wiley   +1 more source

Statistical energy analysis computer program, user's guide [PDF]

open access: yes
A high frequency random vibration analysis, (statistical energy analysis (SEA) method) is examined. The SEA method accomplishes high frequency prediction of arbitrary structural configurations. A general SEA computer program is described.
Trudell, R. W., Yano, L. I.
core   +1 more source

Statistically Resolving Thickness‐Dependent Electrical Characteristics in Multilayer‐MoS2 Transistors

open access: yesAdvanced Functional Materials, EarlyView.
A large number of MoS2 flakes were screened to obtain high‐quality flakes based on optical intensities in R, G, and B channel images. The flakes were classified from Level 1 to 6 based on optical intensities in the R, G, and B channel images. Low‐quality flake exhibited wrinkled, folded, or overlapped features, while high‐quality displayed a neat ...
Sanghyun Lee   +11 more
wiley   +1 more source

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