Results 81 to 90 of about 1,418,172 (386)

Stimulus dependence of the collective vibration of atoms in an icosahedral cluster [PDF]

open access: yesarXiv, 2008
Molecular dynamics calculations of the vibrational behavior of atoms in a Lennard-Jones 147-atom cluster revealed that the relaxation and the stability of the collective vibration of atoms in the cluster depend on the extent of the mechanical disturbance.
arxiv  

Multiple‐Repeated Plasma Surface Treatments for Significantly Improving Bonding Performance of Metal‐Carbon‐Fiber‐Reinforced Thermoplastic Polymer Dissimilar Adhesive Joints

open access: yesAdvanced Engineering Materials, EarlyView.
Multiple plasma surface treatments improved the Mode I fracture energy of metal‐carbon‐fiber‐reinforced thermoplastic polymer (CFRTP) joints by ≈240% compared to single treatments and nearly 2000% over untreated joints. This significant enhancement, achieved without modifying CFRTP surface roughness, is attributed to improved chemical bonding at the ...
Angela A. Lee   +4 more
wiley   +1 more source

Ultrasonic signal processing techniques for Pipeline: A review

open access: yesMATEC Web of Conferences, 2019
Monitoring pipeline wall is an important issue in oil and gas industries. Over time, the defect can occur in the pipeline and can impact surrounding population, environment and may result in injuries or fatalities.
Naqiuddin M. S. M   +3 more
doaj   +1 more source

A review of the recent research on vibration energy harvesting via bistable systems

open access: yes, 2013
The investigation of the conversion of vibrational energy into electrical power has become a major field of research. In recent years, bistable energy harvesting devices have attracted significant attention due to some of their unique features. Through a
R. Harne, Kon-Well Wang
semanticscholar   +1 more source

Holographic vibrometry: Full field holographic vibrometry at ultimate limits [PDF]

open access: yes, 2015
Heterodyne holography is an extremely versatile and powerful holographic technique that is able to fully control the amplitude, phase and frequency of both the illumination and holographic reference beams. Applied to vibration analysis, this technique is able to detect the signal of the carrier or the one of any vibration sideband.
arxiv   +1 more source

High‐Entropy Ti, Zr, Hf, Ta Multiphase Diboride with Deformation Resistance up to 2000 °C

open access: yesAdvanced Engineering Materials, EarlyView.
Ceramics are brittle and strength decreases with temperature. The multiphase high‐entropy (Ti0.25Ta0.25Hf0.25Zr0.25)B2 with heterogeneity at the nano‐ and microscale demonstrates deformation resistance up to 2000 °C, with maximum bending strength at 1800 °C.
Petre Badica   +3 more
wiley   +1 more source

Machines’ Intelligent Fault Diagnosis Based on Hierarchical Refined Composite Generalized Multiscale Fluctuation Dispersion Entropy

open access: yesShock and Vibration
Vibration data from mechanical equipment contain extensive information distributed across multiple dimensions. Single-scale analysis fails to comprehensively reflect its damage characteristics, thereby reducing fault diagnosis accuracy.
Biwen Chen   +5 more
doaj   +1 more source

Health effects associated with occupational exposure to hand-arm or whole body vibration

open access: yesJournal of Toxicology and Environmental Health. Part B, Critical Reviews, 2018
Workers in a number of different occupational sectors are exposed to workplace vibration on a daily basis. This exposure may arise through the use of powered-hand tools or hand-transmitted vibration (HTV).
K. Krajnak
semanticscholar   +1 more source

Design and Evaluation of 3D‐Printed Polylactic Acid Composites Reinforced with Biodegradable Bamboo Powder and Jute Powder

open access: yesAdvanced Engineering Materials, EarlyView.
The study investigates 3D‐printed polylactic acid (PLA) composites with biodegradable bamboo and jute powder fillers. Mechanical, thermal, structural properties, and rheological behavior are discussed to evaluate composite performance. Morphological characterization indicates uniform dispersion and adhesion of the fillers in the PLA matrix with the ...
Vimukthi Dananjaya   +4 more
wiley   +1 more source

Review of Lightweight Vibration Isolation Technologies for Marine Power Devices

open access: yesShock and Vibration
Vibration induced by marine power devices (MPD) transmitting to the hull structure is one of the most important factors that cause ship vibration and underwater sound radiation.
Yuanran Qiu   +4 more
doaj   +1 more source

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