Plasma Dynamics and Pulse Shape Rules in Laser Heating of Opaque Targets in Ai

Bassam Hanna Habib

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Publication Date

Mon Nov 01 2010

Journal Name

Iraqi Journal Of Physics

Volume

8

Issue Number

12

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Plasma Dynamics and Pulse Shape Rules in Laser Heating of Opaque Targets in Ai

Plasma Dynamics Laser Heating

Bassam Hanna Habib

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A theoretical model is developed to determine time evolution of temperature at the surface of an opaque target placed in air for cases characterized by the formation of laser supported absorption waves (LSAW) plasmas. The model takes into account both plasma dynamics and time variation of incident laser pulse (i.e. pulse shape or profile).Shock tube relations were employed in formulating plasma dynamics over target surface. Gaussian function was chosen in formulating the pulse profile in the present modeling

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Publication Date

Mon Sep 04 2023

Journal Name

2023 International Conference On Advanced Mechatronic Systems (icamechs)

Performance Analysis of Finite-Time Generalized Proportional Integral Observer for Uncertain Brunovsky Systems

Kamal

Raja Fawad

Zhenwei

Zhihong

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This paper proposes a novel finite-time generalized proportional integral observer (FTGPIO) based a sliding mode control (SMC) scheme for the tracking control problem of high order uncertain systems subject to fast time-varying disturbances. For this purpose, the construction of the controller consists of two consecutive steps. First, the novel FTGPIO is designed to observe unmeasurable plant dynamics states and disturbance with its higher time derivatives in finite time rather than infinite time as in the standard GPIO. In the FTGPO estimator, the finite time convergence rate of estimations is well achieved, whereas the convergence rate of estimations by classical GPIO is asymptotic and slow. Secondly, on the basis of the finite and fast e

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Publication Date

Thu Mar 01 2018

Journal Name

Materials Today Communications

Improved mechanical properties of sol-gel derived ITO thin films via Ag doping

Hatem

Zhong-Tao

David J.

Amun

Chun-Yang

Afishah Binti

Xiaoli

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Publication Date

Tue Feb 24 2015

Journal Name

Robotica

Multi-level control of zero-moment point-based humanoid biped robots: a review

Hayder F. N.

B.

Wen-Hong

B.

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SUMMARYResearchers dream of developing autonomous humanoid robots which behave/walk like a human being. Biped robots, although complex, have the greatest potential for use in human-centred environments such as the home or office. Studying biped robots is also important for understanding human locomotion and improving control strategies for prosthetic and orthotic limbs. Control systems of humans walking in cluttered environments are complex, however, and may involve multiple local controllers and commands from the cerebellum. Although biped robots have been of interest over the last four decades, no unified stability/balance criterion adopted for stabilization of miscellaneous walking/running modes of biped ... Show More

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(42)

Publication Date

Tue Jun 01 2021

Journal Name

Iop Conference Series: Earth And Environmental Science

Adsorption of heavy metal ions using activated carbon derived from Eichhornia (water hyacinth)

Eichhornia

Activated carbon

physiochemical activation

Heavy metal ions

Sami D.

Israa M.

Alaa K.

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AbstractRemoval of heavy metal ions such as, cadmium ion (Cd 2+) and lead ion (Pb 2+) from aqueous solution onto Eichhornia (water hyacinth) activated carbon (EAC) by physiochemical activation with potassium hydroxide (KOH) and carbon dioxide (CO2) as the activating agents were investigated. The Eichhornia activated carbon was characterized by Brunauer Emmett Teller (BET), Fourier Transform Infrared spectroscopy (FTIR), and Scanning Electron Microscopy (SEM) techniques. Whereas, the effect of adsorbent dosage, contact time of pH, and metal ion concentration on the adsorption process have been investigated using the batch process t ... Show More

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Publication Date

Mon Sep 04 2017

Journal Name

International Journal Of Environmental Science And Technology

A review of permeable reactive barrier as passive sustainable technology for groundwater remediation

A. H.

Q. M.

Ayad

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Publication Date

Sat May 01 2021

Journal Name

Journal Of Physics: Conference Series

Finite element analysis of seepage for Kongele earth dam Using Geo- Studio software

M

S H

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AbstractSeepage occurs under or inside structures or in the place, where they come into contact with the sides under the influence of pressure caused by the difference in water level in the structure U / S and D / S. This paper is designed to model seepage analysis for Kongele (an earth dam) due to its importance in providing water for agricultural projects and supporting Tourism sector. For this purpose, analysis was carried out to study seepage through the dam under various conditions. Using the finite element method by computer program (Geo-Studio) the dam was analysed in its actual design using the SEEP / W 2018 program. Several analyses were performed to study the seepage across Kongele ... Show More

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Publication Date

Sun Jun 06 2021

Journal Name

Materials

Strengthening of Continuous Reinforced Concrete Deep Beams with Large Openings Using CFRP Strips

Mohammed Riyadh

Ali Hussein Ali

Abbas Abdulmajeed

Ayman

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To accommodate utilities in buildings, different sizes of openings are provided in the web of reinforced concrete deep beams, which cause reductions in the beam strength and stiffness. This paper aims to investigate experimentally and numerically the effectiveness of using carbon fiber reinforced polymer (CFRP) strips, as a strengthening technique, to externally strengthen reinforced concrete continuous deep beams (RCCDBs) with large openings. The experimental work included testing three RCCDBs under five-point bending. A reference specimen was prepared without openings to explore the reductions in strength and stiffness after providing large openings. Openings were created symmetrically at the center of spans of the other specimens

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Publication Date

Tue Jan 01 2019

Journal Name

Optical And Quantum Electronics

Photocatalytic activity of anatase titanium dioxide nanostructures prepared by reactive magnetron sputtering technique

E Adnan

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Publication Date

Tue Nov 07 2017

Journal Name

Spe Symposium: Production Enhancement And Cost Optimisation

Wettability Alteration of Carbonate Rocks via Nanoparticle-Anionic Surfactant Flooding at Reservoirs Conditions

chemical flooding methods

concentration

contact angle

imbibition

waterflooding

Wang

suspension

enhanced recovery

stearic acid

Sarmad

Lezorgia N.

Muhammad

Shaobin

Ahmed

Maxim

Stefan

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Nanofluids, liquid suspensions of nanoparticles (NPs) dispersed in deionized (DI) water, brine, or surfactant micelles, have become a promising solution for many industrial applications including enhanced oil recovery (EOR) and carbon geostorage. At ambient conditions, nanoparticles can effectively alter the wettability of the strongly oil-wet rocks to water-wet. However, the reservoir conditions present the greatest challenge for the success of this application at the field scale. In this work, the performance of anionic surfactant-silica nanoparticle formulation on wettability alteration of oil-wet carbonate surface at reservoir conditions was investigated. A high-pressure temperature vessel was used to apply nano-modification of oil-wet

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Publication Date

Wed Dec 01 2021

Journal Name

Ain Shams Engineering Journal

Improving the rutting resistance of asphalt pavement modified with the carbon nanotubes additive

Mohammed Q.

Mohammed Y.

Abbas F.

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