Results 81 to 90 of about 1,499,822 (211)

Electromagnetic prompt response in an elastic wave cavity

open access: yes, 2015
A rapid, or prompt response, of an electromagnetic nature, is found in an elastic wave scattering experiment. The experiment is performed with torsional elastic waves in a quasi-one-dimensional cavity with one port, formed by a notch grooved at a certain
Báez, G.   +4 more
core   +1 more source

Development of adaptive seismic isolators for ultimate seismic protection of civil structures [PDF]

open access: yes, 2013
Base isolation is the most popular seismic protection technique for civil engineering structures. However, research has revealed that the traditional base isolation system due to its passive nature is vulnerable to two kinds of earthquakes, i.e. the near-
Li, J, Li, W, Li, Y, Samali, B
core   +2 more sources

Base isolation: Fresh insight [PDF]

open access: yes, 1993
The objective of the research is a further development of the engineering concept of seismic isolation. Neglecting the transient stage of seismic loading results in a widespread misjudgement: The force of resistance associated with velocity is mostly conceived as a source of damping vibrations, though it is an active force at the same time, during an ...
openaire   +2 more sources

Sensor failure detection for jet engines using analytical redundance [PDF]

open access: yes
Analytical redundant sensor failure detection, isolation and accommodation techniques for gas turbine engines are surveyed. Both the theoretical technology base and demonstrated concepts are discussed.
Merrill, W. C.
core   +1 more source

Vibration isolation with high thermal conductance for a cryogen-free dilution refrigerator

open access: yes, 2018
We present the design and implementation of a mechanical low-pass filter vibration isolation used to reduce the vibrational noise in a cryogen-free dilution refrigerator operated at 10 mK, intended for scanning probe techniques.
Bouwmeester, Dirk   +8 more
core   +1 more source

Nonintrusive inertial vibration isolation technology for microgravity space experiments [PDF]

open access: yes
The dynamic acceleration environment observed on Space Shuttle flights to date and predicted for the Space Station has complicated the analysis of prior microgravity experiments and prompted concern for the viability of proposed space experiments ...
Brown, Gerald V., Grodsinsky, Carlos M.
core   +1 more source

Base isolated residential buildings

open access: yes, 2021
Το ερευνητικό έργο του Solarino περιλαμβάνει δύο ανακατασκευασμένες εργατικές κατοικίες οπλισμένου σκυροδέματος στην Ανατολική Σικελία. Η ανακατασκευή πραγματοποιήθηκε με την χρήση υβριδικού συστήματος σεισμικής μόνωσης, το οποίο περιλαμβάνει ελαστομερείς μονωτήρες υψηλής απόσβεσης και μονωτήρες ολίσθησης χαμηλής τριβής.
openaire   +1 more source

An autonomous fault detection, isolation, and recovery system for a 20-kHz electric power distribution test bed [PDF]

open access: yes
Future space explorations will require long term human presence in space. Space environments that provide working and living quarters for manned missions are becoming increasingly larger and more sophisticated.
Quinn, Todd M., Walters, Jerry L.
core   +1 more source

Base Pounding Model and Response Analysis of Base-Isolated Structures under Earthquake Excitation

open access: yesApplied Sciences, 2017
In order to study the base pounding effects of base-isolated structure under earthquake excitations, a base pounding theoretical model with a linear spring-gap element is proposed.
Chengqing Liu   +4 more
doaj   +1 more source

Silicon photonics broadband modulation-based isolator

open access: yesOptics Express, 2014
We discuss an optical isolator design based on tandem phase modulators in a long interferometer. It provides low-loss, broadband isolation in a photonic integrated circuit without requiring special materials or fabrication steps. It was demonstrated in silicon photonics.
C R, Doerr, L, Chen, D, Vermeulen
openaire   +2 more sources

Home - About - Disclaimer - Privacy