Show: 25 50 75 100 Results

Search results: 25 out of 3,193

دراسة حصاد الطاقة من منظومة التعليق للمركبات == Study of Energy Harvesting from the Suspension of a Vehicle

Author name: مرتضى قاسم دينار
Supervisor name: Haider J. Abid | Hassanein I. Khalaf
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Master
University: University Of Basrah - College Of Engineering - Department Of Mechanical Engineering
Language: English
University location: Basrah
First pages:

تشغيل محرك الاحتراق الداخلي بواسطة الهيدروجين المنتج مع الوقود الاحفوري == Operating an Internal Combustion Engine by Produced Hydrogen Combined with Fossil Fuel

Author name: سرمد علاء جاسم
Supervisor name: رافد معلك حنون
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Master
University: University of Thi-Qar - College Of Engineering - Department Of Mechanical Engineering
Language: English
University location: Dhi Qar
First pages:

دراسة عددية وتجريبية لتاثير امتداد اخدود طولي على خصائص جسم هوائي == NUMERICAL AND EXPERIMENTAL STUDY OF THE EFFECT OF LONGITUDINAL SPANWISE GROOVE ON AIRFOIL CHARACTERISTICS

Author name: مهدي صاحب مهدي
Supervisor name: Qais A. Rishack | Mohammed A. Al - fahham
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Master
University: University Of Basrah - College Of Engineering - Department Of Mechanical Engineering
Language: English
University location: Basrah
First pages:

دراسة عملية وعددية لقدم اصطناعية رياضية مصنعة من مواد مركبة هجينة == Experimental and Numerical Study of Athletic Prosthetic Foot Laminated from Hybrid Composite Materials

Author name: حيدر كريم طلاع
Supervisor name: Abdul Kareem F. Hassan | Jawad Kadhim Oleiwi
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: University Of Basrah - College Of Engineering - Department Of Mechanical Engineering
Language: English
University location: Basrah
First pages:

الكشف المبكر والعابر لظروف العمل لاهتزاز المحامل ذات العناصر الدوارة باستخدام تقنيات الذكاء الاصطناعي == Early and Cross-Domain Detection of Rolling-Element Bearings Vibration Using Artificial Intelligent Techniques

Author name: حيدر سهيل نجم
Supervisor name: Jaafar K. Ali
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

تصميم وبناء واختبار نفق هوائي منخفض السرعة == DESIGN, CONSTRUCTION AND TEST OF A LOW SPEED WIND TUNNEL

Author name: رضا محمد علي عباس
Supervisor name: Ahmad Abdulkarim Mahdi Alsahlani
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Master
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

دراسة عملية وعددية للدرفلة على البارد في الصلب الواطئ الكاربون == Experimental and Numerical Study of Cold Rolling for Low Carbon Steel

Author name: ابتسام محي مانع
Supervisor name: Emad O. Baje | Abdul-Kareem F. Hassan
General topic: Mechanical Engineering
Specific topic: Applied Mechanics
Degree: Master
University: University Of Basrah - College Of Engineering - Department Of Mechanical Engineering
Language: English
Key words:
  • 1.1 Introduction
  • 1.2 Classification of Rolling Process
  • 1.3 Application of Cold Rolling
  • 1.4 Effect of Cold Rolling on Mechanical Properties of Material
  • 1.5 Strain Hardening
  • 1.6 Low Carbon Steel AISI 1012
  • 1.7 The Main Aims Of This Study
  • 1.8 Thesis Layout
  • Chapter Two: Literature Review
  • 2.1 Introduction
  • 2.2 Literature Review Related to Rod Rolling
  • 2.3 Effect of Rolling On the Mechanical Properties
  • 2.3 Literature Review Related To Numerical Simulation
  • 2.4 Conclusion Remarks
  • Chapter Three: Experimental Work
  • 3.1 Introduction
  • 3.2 Materials and Chemical Analysis3.3 Sample Preparation
  • 3.4 Rolling Machine
  • 3.5 Cold Rolling Process
  • 3.6 Mechanical Test
  • 3.6.1 Static Tensile Test
  • 3.6.2 Micro Hardness Test
  • 3.7 Metallographic Test
  • 3.7.1 Preparation of Sample
  • 3.7.2 Microstructure Imaging
  • Chapter four: Theoretical Background and the Finite Element M4.1 Introduction
  • 4.2 Mechanics Deformation of wire Cold Rolling Process
  • 4.2.1 Calculating Width of Contact between the Wire and Roll
  • 4.2.2 Calculate the Wire Lateral Spread after Rolling
  • 4.2.3 Slab Analysis for Wire Rolling Calculation
  • 4.3 Numerical Simulation of the Process of Cold Wire Flat Rolling
  • 4.3.1 Numerical Simulation
  • 4.3.2 Create parts and Build Full Model for Each Reduction
  • 4.3.3 Defining Materials Properties
  • 4.3.4 Defining Element Type and Mesh
  • 4.3.5 Applied boundary conditions
  • 4.4 Numerical Simulation of the Process of Cold sheet Flat Rolling
  • 4.4.1 Create Parts and Define Material Properties
  • 4.4.2 Defining Element Type and interaction
  • 4.4.3 Applied Boundary Condition 5.1 Introduction
  • 5.2 Experimental Results
  • 5.2.1 Micro Hardness Test
  • 5.2.2 Percentage reduction effect on tensile properties
  • 5.2.3 Percentage Reduction Ratio Effect on Microstructure
  • 5.3 Wire Numerical Results
  • 5.3.1 Verification of the Present Model
  • 5.3.2 Numerical Results of Wire Deformation
  • 5.3.3 Calculation of Contact Area
  • 5.3.2 Calculate Width and Height of Wire after Rolling
  • 5.4 Numerical Results of Sheet Deformation
First pages:

الموازنة متعددة المتسويات للمكائن الدوارة بواسطة قياس الاستجابة الاهتزازية == Multi-Plane Balancing of Rotating Machines Using Vibration Response Measurement

Author name: يحيى محمد امين
Supervisor name: Jaafar K. Ali
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: University Of Basrah - College Of Engineering - Department Of Mechanical Engineering
Language: English
Key words:
  • Chapter One: Introduction
  • Introduction
  • Advantages of Balancing
  • Rotor Vibration Forms
  • Causes of Unbalance
  • Types of Unbalance
  • Rotor Balancing Methods
  • Mathematical Model
  • Model Based Balancing (MBB)
  • Experimental Modal Analysis (EMA)
  • Digital Signal Processing (DSP)
  • Time and Frequency Domain
  • Fast Fourier Transform (FFT)
  • Thesis objectives
  • Thesis structure
  • Chapter Two: Literature Review
  • Introduction
  • Influence Coefficient Method
  • Modal Balancing Methods
  • Balancing Without Trial Runs
  • Conclusions
  • Chapter Three: Finite Element Model
  • Introduction
  • Coordinate System
  • Rotor Components
  • Disk elements
  • Shaft elements
  • Euler-Bernoulli Beam Theory
  • Shear and rotary inertia effects
  • The 8-DOF Shaft Elements model
  • Gyroscopic effects
  • Couplings
  • Bearings
  • Rolling-Element Bearings Hydrodynamic Bearings
  • Flexible Support
  • Modeling a Whole Rotor
  • Chapter Four: Modal Analysis
  • Introduction
  • Updating of FE model
  • Modal Testing Method
  • Mathematical Models
  • Theoretical Basis of Modal Analysis
  • Single Degree of Freedom System SDOF
  • Graphical Representation of FRF
  • Multi-Degree-of-Freedom System (MDOF)
  • Revisiting SDOF
  • Frequency Response Function Measurement
  • FRF Estimation
  • SISO-FRF Estimation
  • Coherence function
  • Excitation Techniques
  • Extracting Modal Parameters
  • One Column or One Row
  • Extracting Modal Parameters from FRF Data-SDOF
  • methods
  • Peak-picking
  • Circle-fit
  • Least Squares Curve Fitting Using SDOF Model
  • Extracting Modal Data from FRF Data-MDOF method
  • Mode Shape Extraction from Modal Constants
  • Modal Testing of Rotating Structures
  • Chapter Five: Digital Signal Processing
  • Introduction
  • Time and Frequency Domains
  • Signal Digitization
  • Sampling
  • Quantization
  • Aliasing
  • Leakage
  • Windowing
  • Averaging
  • Chapter summery
  • Chapter Six: Sensors calibration and EMA verification
  • Introduction
  • Calibration of transducers
  • Calibration of Accelerometer
  • Calibration of Force Transducer Case study-I: Circular cross-sectional shaft
  • Analytical Modal Analysis
  • Numerical Modal Analysis
  • Experimental Modal Analysis
  • Available Excitation Techniques
  • Results and Comparison
  • Effects of DSP parameters on FRF
  • Effect of Windows
  • Effect of sample time
  • Effect of Excitation Techniques
  • Reciprocity condition
  • Case study-II: Shaft with two disks
  • Chapter summary
  • Chapter Seven: Model-Based Rotor Balancing
  • Introduction
  • Model Based Balancing (MBB)
  • Balancing Test Rig
  • The rotor to be balanced
  • Performing EMA on the rotor
  • FEA Based Model
  • Comparison of the Resulting Modal Parameters
  • Balancing Case Studies
  • Case-I: Two measuring planes and two balancing planes
  • Case-II: Two measuring planes and three balancing planes Residue-Based Model Balancing
  • Essential arrangements before EMA
  • Some issues when performing EMA
  • EMA results
  • Balancing Results
  • Discussion of results
  • Discussion of Results of Tables (7-4) and (7-5)
  • Discussion of Results of Tables (7-6)
  • Chapter summery
First pages:

تاثير الاهتزازات المحورية في اداء مرشحات الهواء اللزجة

Author name: جمال مصطفى سليم حسين الفخري
Supervisor name: حسن مجيد الدلفي
General topic: Mechanical Engineering
Specific topic: Refrigeration and Air Conditioning
Degree: Master
University: University of Technology - Department of Machinery and Equipment Engineering
Language: Arabic
University location: Baghdad
First pages:

بحث الاسلوب الامثل في تبريد وتسخين الملاجئ العمومية الكبيرة في اقل فترة زمنية ممكنة تتطلبها الحالات الطارئة

Author name: مناضل عباس حسن
Supervisor name: محمد علي جواد
General topic: Mechanical Engineering
Specific topic: Refrigeration and Air Conditioning
Degree: Higher Diploma
University: University of Technology - Department of Machinery and Equipment Engineering
Language: Arabic
University location: Baghdad
First pages:

تصميم منظومة التبريد والتدفئة المركزية لوحدات خاصة منشاة تحت الارض لاغراض الدفاع المدني

Author name: رعد عبد الفتاح عبد الله
Supervisor name: علي سلمان الجبوري
General topic: Mechanical Engineering
Specific topic: Refrigeration and Air Conditioning
Degree: Higher Diploma
University: University of Technology - Department of Machinery and Equipment Engineering
Language: Arabic
University location: Baghdad
First pages:

تصفية الهواء في منظومات التكييف

Author name: قاسم علي عباس
Supervisor name: حسن عبد العزيز حسن
General topic: Mechanical Engineering
Specific topic: Refrigeration and Air Conditioning
Degree: Master
University: University of Technology - Department of Machinery and Equipment Engineering
Language: Arabic
University location: Baghdad
First pages:

تحسين كفاءة مكيفات الهواء الصغيرة

Author name: روجيه كمال عبد الاحد النجار
Supervisor name: جوامير مجيد سليم
General topic: Mechanical Engineering
Specific topic: Energy engineering
Degree: Master
University: University of Technology - Department of Machinery and Equipment Engineering
Language: Arabic
University location: Baghdad
First pages:

تصنيع وتحليل قدم اصطناعية رياضية ديناميكية باستخدام مادة مركبة مقترحة == Manufacturing and Analysis of an Athletic Dynamic Prosthetic Foot Using a Proposed Composite Material

Author name: نور كريم جماع كاطع
Supervisor name: محسن جبر جويج | احمد قاسم حسن
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Master
University: University of Kerbala - College Of Engineering - Department Of Mechanical Engineering
Language: English
University location: Karbala
First pages:

دراسة اداء انظمة التبريد ذي القنوات المايكروية باستخدام قنوات متغيرة المقطع العرضي وترتيبات مختلفة للقنوات ولاتجاه جريان المائع == Performance study of Microchannel cooling system using variable cross section channels with different arrangements and fluid flow directions

Author name: صاحب شهاب احمد اسحاق الدليمي
Supervisor name: Abdul Muhsin Abood Rageb
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: University Of Basrah - College Of Engineering - Department Of Mechanical Engineering
Language: English
University location: Basrah
First pages:

تحسين مقاومة الخدش لمادة البولي مثيل ميثا اكريليت بالتقوية بجسيمات ثاني اوكسيد السيليكا النانوية == Improvement of Scratch Resistance of PMMA by Reinforcing with Nano SiO2 Particles

Author name: مشتاق عبد الكريم حسين البحراني
Supervisor name: Abdul Kareem F. Hassan | Najim Abdul Ameer Saad
General topic: Mechanical Engineering
Specific topic: Applied Mechanics
Degree: Doctorate
University: University Of Basrah - College Of Engineering - Department Of Mechanical Engineering
Language: English
University location: Basrah
First pages:

جساءة الوصلة في مربوطات البراغي

Author name: واثق عيسى مهدي
Supervisor name: نبيل محمد مطش
General topic: Mechanical Engineering
Specific topic: Applied Mechanics
Degree: Higher Diploma
University: University of Technology - Department Of Mechanical Engineering
Language: Arabic
University location: Baghdad
First pages:

دراسة تاثير درجة الحرارة على كرسي تحميل غازي بوجود حمل ديناميكي وحيود محوري == The Effect of The Temperature on Gas Lubrication of Misaliigned Journal Bearing Under Dynamic Load Condition

Author name: امير طوفان شفيق
Supervisor name: موفق علي توفيق
General topic: Mechanical Engineering
Specific topic: Applied Mechanics
Degree: Master
University: University of Technology - Department of Machinery and Equipment Engineering
Language: Arabic
University location: Baghdad
First pages:

A Study on Laminar Flame Propagation of Propane Iraqi Liquefied Petroleum Gas Butane and Hydrogen-air Mixtures Through Tube

Author name: Hani M. Ahmed Matter
Supervisor name: Mohammed N. Hamid
General topic: Mechanical Engineering
Specific topic: Energy engineering
Degree: Master
University: University of Technology - Department Of Mechanical Engineering
Language: English
University location: Baghdad
First pages:

دراسة مشكلة التاكل في انابيب البخار لافران المراجل في محطة كهرباء النجيبية == study of the problem of corrosion in the steam tubes of boiler furnaces in al-najebia power plant

Author name: حيدر معاذ محمد
Supervisor name: صالح اسماعيل نجم
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Master
University: University Of Basrah - College Of Engineering - Department of Mechanical Engineering
Language: English
University location: Basrah
First pages:

Propagation of Premixed Flame in Tubes

Author name: Majeed D. Hameed
Supervisor name: Mohammed N. Hamid
General topic: Mechanical Engineering
Specific topic: Energy engineering
Degree: Master
University: University of Technology - Department Of Mechanical Engineering
Language: English
University location: Baghdad
First pages:

دراسة استخدام الطاقة الشمسية في التبريد التبخيري للهواء == an investigation into solar assisted evaporative cooling

Author name: عظيم ابراهيم محمد
Supervisor name: khalid a. al-joudi
General topic: Mechanical Engineering
Specific topic: Refrigeration and Air Conditioning
Degree: Master
University: University Of Basrah - College Of Engineering - Department of Mechanical Engineering
Language: English
University location: Basrah
First pages:

دراسة امكانية تكييف سيارة باستخدام الطاقة المطرودة من ماكنتها == a feasibility study of an air conditioning system for a vehicle using the reject heat energy

Author name: abd-aldawood s. al-doori
Supervisor name: r. h. alrabeh
General topic: Mechanical Engineering
Specific topic: Refrigeration and Air Conditioning
Degree: Master
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

سخان ماء شمسي للاغراض المنزلية == domestic solar water heater

Author name: حيان عبد الغني عبد الزهرة
Supervisor name: khalid a. al-joudi
General topic: Mechanical Engineering
Specific topic: Refrigeration and Air Conditioning
Degree: Master
University: University Of Basrah - College Of Engineering - Department of Mechanical Engineering
Language: English
University location: Basrah
First pages:

دراسة تحليلة لتحسين انتقال الحرارة نتيجة جريان داخلي متذبذب عند ثبوت الفيض الحراري == analytical study of heat transfer enhancement due to internal oscillating flow at constant heat flux

Author name: احمد كاظم محمد الشرع
Supervisor name: abdul-muhsin a. rageb
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: University Of Basrah - College Of Engineering - Department of Mechanical Engineering
Language: English
University location: Basrah
First pages:
1 ... 20 21 22 23 24 ... 128