نتایج جستجو برای: deflection

تعداد نتایج: 9834  

2009
R. Jalili Saffar

Optimization of cutting parameters is valuable in terms of providing high precision and efficient machining. One of the effects of cutting force in the end milling operation with low diameter tool (during metal cutting) is tool deflection. Assuming that machining errors mostly arise from tool deflection, attempt was made to optimize machining parameters using Genetic Algorithm (GA) so as to min...

2018
Ivo Stachiv Petr Sittner

Nanocantilevers have become key components of nanomechanical sensors that exploit changes in their resonant frequencies or static deflection in response to the environment. It is necessary that they can operate at a given, but adjustable, resonant frequency and/or static deflection ranges. Here we propose a new class of nanocantilevers with a significantly tunable spectrum of the resonant frequ...

Journal: :J. Sensors 2013
Thomas Lehmann Mahdi Tavakoli Nawaid Usmani Ronald Sloboda

A virtual sensor is developed for the online estimation of needle tip deflection during permanent interstitial brachytherapy needle insertion. Permanent interstitial brachytherapy is an effective, minimally invasive, and patient friendly cancer treatment procedure. The deflection of the needles used in the procedure, however, undermines the treatment efficiency and, therefore, needs to be minim...

2010
Stefan Ruttermann Senay Tomruk Wolfgang H. M. Raab Ralf Janda

OBJECTIVES The purpose of this study was to evaluate flexural strengths, moduli, and maximum deflection of Clearfil AP-X (APX) and Ceram-X Mono (CXM) when cured with a quartz-tungsten halogen (QTH) or an LED-light (LED). METHODS Specimens were made according to ISO 4049 and cured with QTH or LED for 10, 20 or 60s. Flexural strength, modulus, and deflection were determined after 24 h water sto...

Journal: :Journal of applied physiology 1999
J A Vachon D R Bassett S Clarke

During an incremental run test, some researchers consistently observe a heart rate (HR) deflection at higher speeds, but others do not. The present study was designed to investigate whether differences in test protocols could explain the discrepancy. Additionally, we sought to determine whether the HR deflection point accurately predicts lactate threshold (LT). Eight trained runners performed f...

Journal: :J. Computational Applied Mathematics 2010
Peter Junghanns Giovanni Monegato A. Strozzi

We consider integral equation formulations of contact problems of Kirchhoff (thin) plates, discontinuously supported along arcs or segments. In the classical PDE formulation (biharmonic equation), the plate deflection is assumed as the primary unknown. The boundary conditions along the supported edge are imposed in terms of the plate deflection and its derivatives, and the reaction forces and c...

2008
K. Y. Koo J. J. Lee C. B. Yun

Changes in the measured structural responses, such as deflections and modal properties, induced by damage could be significantly smaller than those by environmental effects such as temperature and temperature gradients. To make the structural health monitoring more reliable and applicable to real structures, it is highly desirable to develop a methodology to distinguish the changes due to the s...

Journal: :Strategies in trauma and limb reconstruction 2018
Beth Lineham Todd Stewart Paul Harwood

No entirely reliable method exists for assessing union during Ilizarov treatment. Premature removal results in potential treatment failure; hence, alternative methods warrant investigation. Wire deflection might provide an indication of fracture site deformation on weight bearing, indicating progress towards union. This study aimed to test a method for assessing wire deflection within an Ilizar...

2003
H. Ibach D. Bruchmann R. Vollmer M. Etzkorn P. S. Anil Kumar

By making use of advanced methods for the calculation of electron trajectories in the presence of space charge fields we have designed and built a novel electron energy-loss spectrometer for the purpose of measuring spin flip excitations at surfaces. The measurement of the spin asymmetry requires a deflection angle between the photocathode and the sample position which amounts to 90° in total. ...

2012
ZHIGANG LV PENG WANG CUIXIA LIU

In order to improve precision and efficiency of measuring pavement deflection in the transport area of China, a measuring machine based on embedded operating system μC/OS-II is designed with LPC2214 MCU. In the design, wireless communication technology, embedded technology, filter technology of software and hardware, anti-jamming technology and other advanced technologies are applied. The machi...

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