Results 11 to 20 of about 956,014 (301)

Influence of the parameters of magnetic abrasive treatment on the surface roughness of carbide tools [PDF]

open access: yesМеталознавство та обробка металів, 2019
Considered the influence of the modes of magnetic-abrasive treatment using a ball magnetic-abrasive tool on the roughness of the working surfaces of the multifaceted non-retractable hard-alloy plates.
Bobyn A.B.   +2 more
doaj   +1 more source

Research on the typical fault modes of multi-category aviation transformer rectifier units

open access: yesHangkong gongcheng jinzhan, 2023
With the development of multi-electric aircraft, the researches on the structure improvement and fault di-agnosis of aviation transformer rectifier units (TRUs) are increasing, but research on the characteristics and effects of typical fault modes of ...
CHEN Shuwen, YU Nalun
doaj   +1 more source

Entrance skin dose of the thyroid gland area following exposure with different protocols of two panoramic and cone-beam computed tomography devices

open access: yesJournal of Oral and Maxillofacial Radiology, 2019
Background: Cone-beam computed tomography (CBCT) has gained considerable use, while radiation burden remains an important concern. Aims: This study aimed at determining the entrance skin dose of the thyroid gland area through exposure with the normal ...
Bardia Vadiati Saberi   +5 more
doaj   +1 more source

Delocalized nonlinear vibrational modes and their effect on the properties of binary NiTi alloy [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика
The purpose of this work is to investigate the behavior of stable one-component delocalized nonlinear vibrational modes in simple cubic titanium and nickel sublattices, as well as their influence on the properties of the binary NiTi alloy. Methods.
Bachurin , Dmitry Vladimirovich   +1 more
doaj   +1 more source

Classical Limit for Scalar Fields at High Temperature [PDF]

open access: yes, 1997
We study real-time correlation functions in scalar quantum field theories at temperature $T=1/\beta$. We show that the behaviour of soft, long wavelength modes is determined by classical statistical field theory.
Buchmuller, W., Jakovac, A.
core   +3 more sources

Identification and influence factors analysis of blade crack mistuning in hard-coated blisk based on modified component mode mistuning reduced-order model

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2021
Blade crack will cause severe mistuning of hard-coated blisks, which will lead to vibration localization. To identify crack mistuning and analyze influence factors, in this study, a mistuning identification method of blade cracks in hard-coated blisks is
Kunpeng Xu   +3 more
doaj   +1 more source

Lyapunov Modes and Time-Correlation Functions for Two-Dimensional Systems [PDF]

open access: yes, 2005
The relation between the Lyapunov modes (delocalized Lyapunov vectors) and the momentum autocorrelation function is discussed in two-dimensional hard-disk systems. We show numerical evidence that the smallest time-oscillating period of the Lyapunov modes
Morriss, Gary P., Taniguchi, Tooru
core   +3 more sources

Head-Positioning Control Using Virtual Resonant Modes in a Hard Disk Drive

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2007
In conventional control systems in hard disk drives, it is difficult to compensate for disturbances above the primary mechanical resonance. In this paper, a design method that uses a virtual resonant mode in head-positioning systems of hard disk drives ...
Takenori ATSUMI
doaj   +1 more source

Softest elastic mode governs materials hardness

open access: yesChinese Science Bulletin, 2014
Single-crystal elastic constants and mechanical hardness of covalent and ionic crystals have been studied using first-principles calculations. The results show that the hardness is dominated by the softest elastic mode, not by the averaged elastic moduli as generally assumed.
Rong Yu, Qi Zhang, Qian Zhan
openaire   +1 more source

Parametric resonance at the critical temperature in high energy heavy ion collisions [PDF]

open access: yes, 2001
Parametric resonance in soft modes at the critical temperature ($T_{c}$) in high energy heavy ion collisions is studied in the case when the temperature ($T$) of the system is almost constant for a long time. By deviding the fields into three parts, zero
A. Dumitru   +15 more
core   +2 more sources

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