Results 81 to 90 of about 553,470 (307)

Physical and subjective studies of aircraft interior noise and vibration [PDF]

open access: yes
Measurements to define and quantify the interior noise and vibration stimuli of aircraft are reviewed as well as field and simulation studies to determine the subjective response to such stimuli, and theoretical and experimental studies to predict and ...
Leatherwood, J. D., Stephens, D. G.
core  

Transient Response of an Impacted Beam and Indirect Impact Force Identification Using Strain Measurements

open access: yesShock and Vibration, 1994
The impulse response functions (force-strain relations) for Euler–Bernoulli and Timoshenko beams are considered. The response of a beam to a transverse impact force, including reflection at the boundary, is obtained with the convolution approach using ...
Hyungsoon Park, Youn-sik Park
doaj   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

open access: yesAdvanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir   +5 more
wiley   +1 more source

Variable friction secondary seal for face seals [PDF]

open access: yes
Vibration and stability of a primary seal ring is controlled by a secondary seal system. An inflatable bladder which forms a portion of the secondary seal varies the damping applied to this seal ring.
Dirusso, E.
core  

Study on Construction Methods Optimization for Subway Sound Barrier Project

open access: yesChengshi guidao jiaotong yanjiu
[Objective] The construction of subway sound barriers is characterized by complex foundation treatment, low installation efficiency and high risk of high-altitude operations, leading to extended construction period, higher costs and hidden quality risks.
YANG Lei, WANG Lixiao
doaj   +1 more source

An Experimental High‐Throughput Approach for the Screening of Hard Magnet Materials

open access: yesAdvanced Engineering Materials, EarlyView.
An entire workflow for the high‐throughput characterization and analysis of compositionally graded magnetic films is presented. Characterization protocols, data management tools and data analysis approaches are illustrated with test case Sm(Fe, V)12 based films.
William Rigaut   +16 more
wiley   +1 more source

Vibration isolation [PDF]

open access: yes
Viewgraphs on vibration isolation are presented. Techniques to control and isolate centrifuge disturbances were identified. Topics covered include: disturbance sources in the microgravity environment; microgravity assessment criteria; life sciences ...
Bastin, Paul
core  

Effect of Tendon Vibration on Hemiparetic Arm Stability in Unstable Workspaces [PDF]

open access: yes
Sensory stimulation of wrist musculature can enhance stability in the proximal arm and may be a useful therapy aimed at improving arm control post-stroke.
Conrad, Megan O.   +3 more
core   +1 more source

Prediction for Outlet Noise of Rolling Piston Comperssor

open access: yesMATEC Web of Conferences, 2015
An acoustic wave equation with considering small perturbation is presented first by use of the fluidic mechanics and aerodynamics, then a theoretical model for predicting the outlet noise of rolling piston compressors is investigated, and the sound ...
Zhang Tieshan
doaj   +1 more source

Reducing initial peak force through chamfered triggers: A study on thin-walled tubular structures for energy absorption and crash protection [PDF]

open access: yesAIP Advances
Thin-walled tubular structures play a significant role in energy absorption owing to their lightweight nature, low cost, and high specific energy absorption, which are widely applied in crash resistance in aerospace and vehicle fields.
Jin Wu   +4 more
doaj   +1 more source

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