نتایج جستجو برای: tool deflection

تعداد نتایج: 371850  

Journal: :The Journal of the Acoustical Society of America 2011
X Zheng R Mittal S Bielamowicz

Two-dimensional numerical simulations are used to explore the mechanism for asymmetric deflection of the glottal jet during phonation. The model employs the full Navier-Stokes equations for the flow but a simple laryngeal geometry and vocal-fold motion. The study focuses on the effect of Reynolds number and glottal opening angle with a particular emphasis on examining the importance of the so-c...

The shaft deflection is one of critical factors that deteriorate the grease lubrication state inside the tapered roller bearings (TRBs). So, in this paper, on the premise of the TRB subjected to the combined loads and the shaft is deflected, the grease lubrication model at the TRB contacts was constructed, in which the interaction loads, linear and angular displacements of the bearing parts wer...

Journal: :The Review of scientific instruments 2007
Lars-Oliver Heim Diethelm Johannsmann

Employing an atomic force microscope (AFM) in conjunction with a quartz crystal microbalance, we have investigated how a high-frequency lateral oscillation of the substrate influences the imaging process of the AFM. It was found that the time-averaged deflection of the cantilever (both vertical and lateral) changed when the oscillation of the quartz resonator was turned on. The vertical-tip-sub...

2004
Serdal Terzi

In this study, Gene Expression Programming (GEP) is used in modeling the deflection basins measured on the surface of the flexible pavements. Backcalculation of the pavement layer moduli are well-accepted procedures for the evaluation of the structural capacity of pavements. The ultimate aim of the backcalculation process from Nondestructive Testing (NDT) results is to estimate the pavement mat...

2017
Kullen Waggoner Lavern Starman John Walton

This research focused on improving the control and sensing of electrostatically actuated, large deflection bimorph beams for optical beam steering. Current iterations of designs utilize a ‘zipper’ beam and have demonstrated large deflection angles. However, with these devices precise control and deflection measurements can be difficult to achieve. Through using segmented bias channels of doped ...

Journal: :Analytical chemistry 2004
Yanjun Tang Ji Fang Xiaohe Xu Hai-Feng Ji Gilbert M Brown Thomas Thundat

Femtomolar concentrations of hydrogen fluoride, a decomposition component of nerve agents, were detected using a SiO(2) microcantilever. The microcantilever underwent bending due to the reaction of HF with SiO(2). The microcantilever deflection increased as the concentration of HF increased. Other acids, such as HCl, had no effect on the deflection of the cantilever. The mechanism of reaction-i...

2016
Maja ĐUKIĆ PJANIĆ Guy Kawasaki Zoran Djuric

Atomic force microscope (AFM) is a tool that allows micro and nano scale imaging of samples ranging from solid state physics to biology. AFM uses mechanical forces to sense the sample and recreate a topography image with high spatial resolution. The biggest disadvantage of the standard AFMs is their scanning speed, as it typically takes up to several tens of minutes to capture an image. A lot o...

Journal: :Machines 2021

Tool temperature variation in flank milling usually causes excessive tool wear, shortens life, and reduces machining accuracy. The heat source is the primary factor of machine thermal error process cutting components. Moreover, accuracy modeling greatly influenced by formation mechanism source. However, caused potential energy bending twisting has essentially not been taken into consideration p...

2006

Nomenclature L y spanwise coordinate q net beam loading S shear M bending moment θ deflection angle (= dw/dx) w deflection κ local beam curvature ′ lift/span distribution ′ S η normalized spanwise coordinate (= 2y/b) c local wing chord wing wing area b wing span λ taper ratio E Young's modulus δ tip deflection N load factor m wing mass/span distribution I bending inertia i spanwise station inde...

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