Mechanical Engineering: Recent submissions
Now showing items 341-360 of 465
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Eurotherm conference no. 105: computational thermal radiation in participating media V
(Elsevier, 2016-03)The Eurotherm Seminar No.: 105 on Computational Thermal Radiation in Participating Media was held in Albi, France on 1–3 April 2015. It was the fifth in a series after Mons, Belgium (Eurotherm Seminar No.: 73, April 2003), ... -
Performance of two real-life California bridges under regional natural hazards
(2016-03)The performance of two real-life California bridges is assessed under a possible regional multihazard condition involving floods and earthquakes. For flood events with varied frequency, expected scour depths at bridge piers ... -
Predicting heat transfer for low- and high-frequency central-orifice synthetic jets
(IEEE, 2016-04)As electronic devices are becoming more compact each day, the more effective and efficient active cooling technologies are needed. Microfluidic devices, such as synthetic jets, serve as a potential candidate to fulfill the ... -
Polyethylenimine modified and non-modified polymeric micelles used for nasal administration of carvedilol
(American Scientific Publishers, 2015)This study evaluates the ability of polyethylenimine-modified and non-modified polymeric micelles to enhance permeation through the nasal mucosa for a highly hydrophobic model drug. Carvedilol was loaded into polyethylen ... -
A Cahn-Hilliard modeling of metal oxide thin films for advanced CMP applications
(ECS, 2014)Chemical mechanical planarization (CMP) process enables topographic selectivity through formation of a protective oxide thin film on the recessed locations of the deposited metal layer, while a continuous chemical oxidation ... -
A preconditioned multigrid for simulation of atmospheric flow and wind turbine wakes
(Elsevier, 2015-11-20)This paper demonstrates a low Mach number preconditioning formulation for high Reynolds number, low Mach number atmospheric flows. The preconditioning is implemented together with multigrid approach into a multistage solver ... -
Derivation of generalized Camassa-Holm equations from Boussinesq-type equations
(Informa Group, 2016)In this paper we derive generalized forms of the Camassa-Holm (CH) equation from a Boussinesq-type equation using a two-parameter asymptotic expansion based on two small parameters characterizing nonlinear and dispersive ... -
Variable ankle stiffness improves balance control: experiments on a bipedal exoskeleton
(IEEE, 2016-02)This paper proposes a real-time balance control technique that can be implemented to bipedal robots (exoskeletons, humanoids) whose ankle joints are powered via variable physical stiffness actuators. To achieve active ... -
Towards balance recovery control for lower body exoskeleton robots with variable stiffness actuators: spring-loaded flywheel model
(IEEE, 2015)This paper presents a biologically-inspired real-time balance recovery control strategy that is applied to a lower body exoskeleton with variable physical stiffness actuators at its ankle joints. For this purpose, a torsional ... -
Assessments on the improved modelling for pneumatic artificial muscle actuators
(IEEE, 2015)In this paper, we present an analysis regarding the pneumatic air muscle modelling, with a particular emphasis on the exoskeleton robot control. We propose two calibration approaches for obtaining the model identification ... -
The penetration of acoustic cavitation bubbles into micrometer-scale cavities
(Elsevier, 2016)The penetration of acoustically induced cavitation bubbles in micrometer-scale cavities is investigated experimentally by means of high-speed photography and acoustic measurements. Micrometer-scale cavities of different ... -
High-speed visualization of acoustically excited cavitation bubbles in a cluster near a rigid boundary
(Springer Berlin Heidelberg, 2017)In the present work, high-speed visualizations at one million frames/s have been used to study the oscillation characteristics of acoustic cavitation bubbles. The bubbles are generated by acoustic cavitation using an ... -
A torque matched aerodynamic performance analysis method for the horizontal axis wind turbines
(Wiley, 2013-11)An analysis method is developed to test the operational performance of a horizontal axis wind turbines. The rotor is constrained to the torque–speed characteristic of the coupled generator. Therefore, the operational ... -
On the EMG-based torque estimation for humans coupled with a force-controlled elbow exoskeleton
(IEEE, 2015)Exoskeletons are successful at supporting human motion only when the necessary amount of power is provided at the right time. Exoskeleton control based on EMG signals can be utilized to command the required amount of support ... -
Torque and variable stiffness control for antagonistically driven pneumatic muscle actuators via a stable force feedback controller
(IEEE, 2015)This paper describes a novel controller that is capable of simultaneously controlling torque and variable stiffness in real-time, for actuators with antagonistically driven pneumatic artificial muscles (PAMs). To this end, ... -
Heart motion prediction based on adaptive estimation algorithms for robotic assisted beating heart surgery
(IEEE, 2013)Robotic-assisted beating heart surgery aims to allow surgeons to operate on a beating heart without stabilizers as if the heart is stationary. The robot actively cancels heart motion by closely following a point of interest ... -
A Complete procedure for predicting and improving the performance of HAWT's
(IOP Publishing, 2014)A complete procedure for predicting and improving the performance of the horizontal axis wind turbine (HAWT) has been developed. The first process is predicting the power extracted by the turbine and the derived rotor ... -
Needle localization using gabor filtering in 2D ultrasound images
(IEEE, 2014)In the percutaneous needle procedures using ultrasound (US) imaging, the needle should be detected precisely to avoid damage to the tissue and to get the samples from the appropriate site. Excessive artifacts and low ... -
Visual tracking of biopsy needles in 2D ultrasound images
(2016)Ultrasound (US) is one the most commonly used medical imaging techniques in percutaneous needle procedures. However, US images are inherently noisy and contain excessive number of artifacts. Hence, it is not easy to track ... -
Real-time needle tip localization in 2D ultrasound images for robotic biopsies
(IEEE, 2015)In this paper, real-time needle tip tracking method using 2D ultrasound (US) images for robotic biopsies is presented. In this method, the needle tip is estimated with the Gabor filter based image processing algorithm, and ...
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