Results 51 to 60 of about 5,618 (212)

Mechanical quality factor of a sapphire fiber at cryogenic temperatures [PDF]

, 2000
A mechanical quality factor of $1.1 \times 10^{7}$ was obtained for the 199 Hz bending vibrational mode in a monocrystalline sapphire fiber at 6 K. Consequently, we confirm that pendulum thermal noise of cryogenic mirrors used for gravitational wave ...
A Yamamoto, Cagnoli, D Tatsumi, Gillespie, K Kuroda, Kuroda, M Ohashi, S Miyoki, Saulson, T Shintomi, T Suzuki, T Tomaru, T Uchiyama, Uchiyama, Uchiyama, Zener   +15 more
core   +2 more sources

Thermoelastic Damping Of Inextensional Hemispherical Shell

, 2009
In this work, thermoelastic damping effect on the hemi- spherical shells is investigated. The material is selected silicon, and heat conduction equation for thermal flow is solved to obtain the temperature profile in which bending approximation with inextensional assumption of the model.
S. Y. Choi, Y. H. Na, J. H. Kim
openaire   +1 more source

Monitoring Near‐Surface Changes Using Anthropogenic Seismic Vibrations

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract The abundance of anthropogenic seismic noise provides a valuable resource for monitoring dynamic subsurface property changes. We utilize railway and wind turbine‐induced vibrations recorded by a geophone array to estimate surface wave attenuation and velocity in the underlying glacial deposits of Illinois.
Sayan Mukherjee, Yunyue Elita Li, Andrew Stumpf, Heng Zhang   +3 more
wiley   +1 more source

An Efficient and Robust Topology Optimization Method for Thermoelastically Damped Microresonators

Applied Sciences, 2023
The challenges of computational cost and robustness are critical obstacles in topology optimization methods, particularly for the iterative process of optimizing large-scale multiphysical structures.
Yu Fu, Li Li, Yujin Hu
doaj   +1 more source

Thermodynamical fluctuations and photo-thermal shot noise in gravitational wave antennae

, 1999
Thermodynamical fluctuations of temperature in mirrors of gravitational wave antennae are transformed through thermal expansion coefficient into additional noise.
Abramovici, Abramovici, Ageev, Braginsky, Braginsky, Braginsky, Gillespi, Gonzalez, Jurchak, Levin, M.L. Gorodetsky, Rowan, S.P. Vyatchanin, Saulson, V.B. Braginsky   +14 more
core   +1 more source

Low Power and Energy‐Efficient Design of MTJ/FinFET Circuits

Engineering Reports, Volume 8, Issue 3, March 2026.
This work begins by outlining the fundamental concepts of MTJs, FinFETs, and the conventional hybrid CMOS/MTJ framework. It then explains the operating mechanism and configuration of the proposed STT‐MTJ/FinFET‐based OR logic gate. The final sections present the simulation outcomes and analyze the influence of FinFET fin variation.
Pillem Ramesh, Atul S. M. Tripathi
wiley   +1 more source

Thermoelastic Damping in Vibrating Beam Accelerometer: A New Thermoelastic Finite Element Approach [PDF]

CANEUS2006: MNT for Aerospace Applications, 2006
In order to respond to the demand of accurate miniature inertial navigation systems, ONERA has been working on the design of a vibrating beam accelerometer called the Vibrating Inertial Accelerometer (VIA). The accuracy of the VIA is directly related to the thermoelastic quality factor of its sensitive element, which is a beam made of quartz.
S. Lepage, O. Le Traon, I. Klapka, S. Masson, J. C. Golinval   +4 more
openaire   +1 more source

Performance Evaluation of an ANN‐Based Model for Hot Rolling Current Prediction: A Sensitivity and Statistical Indicator Approach

Engineering Reports, Volume 8, Issue 3, March 2026.
An ANN‐based model accurately predicts electromotor current in hot rolling by optimizing thickness reduction across passes. Statistical validation (R2 > 0.99) and sensitivity analysis reveal higher energy efficiency and process stability in thicker sheets. A novel metric offers deeper insight into deformation energy and current distribution.
Hamed Afshari, Abbas Khanehzad Yazdi, Mohammad Ali Shokri, Peyman Babaei, Mehdi Jahangiri, Ahmad Haghani   +5 more
wiley   +1 more source

Cavity optomechanics with stoichiometric SiN films [PDF]

, 2009
We study high-stress SiN films for reaching the quantum regime with mesoscopic oscillators connected to a room-temperature thermal bath, for which there are stringent requirements on the oscillators' quality factors and frequencies. Our SiN films support
C. A. Regal, D. J. Wilson, H. J. Kimble, M. Gad-el-Hak, M. Gad-el-Hak, S. B. Papp, V. B. Braginsky   +6 more
core   +2 more sources

Variational Modeling of Porosity Waves

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 1, March 2026.
ABSTRACT Mathematical models for finite‐strain poroelasticity in an Eulerian formulation are studied by constructing their energy‐variational structure, which gives rise to a class of saddle‐point problems. This problem is discretized using an incremental time‐stepping scheme and a mixed finite element approach, resulting in a monolithic, structure ...
Andrea Zafferi, Dirk Peschka
wiley   +1 more source