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تحسين انتقال الحرارة في فجوة حلقية بتسخين الاسطوانة الداخلية الثابتة بانتظام وتدوير الاسطوانة الخارجية == HEAT TRANSFER ENHANCEMENT IN AN ANNULUS WITH UNIFORMLY HEATED STATIONARY INNER CYLINDER AND ROTATING OUTER CYLINDER

Author name: سامر محمود خلف
Supervisor name: Akeel A. Mohammed | Qasim J.Muhammad
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: Al-Nahrain University - College Of Engineering
Language: English
University location: Baghdad
First pages:

تاثير ميل المستقبل الشمسي الخارجي على الاداء الحراري لمحطة برج الطاقة الشمسية المركزة باستخدام الماء == INCLINATION EFFECT ON THERMAL PERFORMANCE CHARACTERISTICS OF EXTERNAL SOLAR RECEIVER TOWER PLANT WITH WATER FLOW

Author name: مهند صالح مهدي
Supervisor name: احمد فخري خضير
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: Al-Nahrain University - College Of Engineering
Language: English
University location: Baghdad
First pages:

السيطرة على سلامة الهياكل الصفائحية المتراكبة باستخدام تحليل الاهتزازات == INVESTIGATION OF HEALTH MONITORING OF COMPOSITE PLATE STRUCTURES - USING VIBRATION ANALYSIS

Author name: مهند لفتة شلاكة الوائلي
Supervisor name: Muhsin J. Jweeg| Ali S. Hammood
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: Al-Nahrain University - College Of Engineering
Language: English
University location: Baghdad
First pages:

السيطرة الفعالة على الاهتزاز والديناميك اللاخطي للانابيب الناقلة للمائع == VIBRATION CONTROL AND NONLINEAR DYNAMICS OF PIPES CONVEYING FLUID

Author name: ثائر جبار نتيش
Supervisor name: محسن جبر جويج
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: Al-Nahrain University - College Of Engineering
Language: English
University location: Baghdad
First pages:

الخواص الميكانيكية والتحليل الحراري لعملية اللحام بالسحق الاحتكاكي لصفائح الالمنيوم (AA6061 - T6/AA1050) المتشابهة والغير متشابهة == MECHANICAL PROPERTIES AND THERMAL ANALYSIS OF FRICTION CRUSH WELDING AA1050 / AA6061 - T6 SIMILAR AND DISSIMILAR ALUMINIUM SHEETS

Author name: امير غالب مرتضى
Supervisor name: علي حسين الحلي
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: Al-Nahrain University - College Of Engineering
Language: English
University location: Baghdad
First pages:

التقنيات التجريبية والعددية لاستقصاء السلوك الثنائي المحور لسبيكة Ni - Ti الذاكرة للشكل == EXPERIMENTAL AND NUMERICAL TECHNIQUES FOR INVESTIGATIONS OF BIAXIAL BEHAVIOUR OF NI - TI SHAPE MEMORY ALLOY

Author name: اسماء منعم عبد الله
Supervisor name: Abdulrahman N.Abed | Ali Hussien Muhammad
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: Al-Nahrain University - College Of Engineering - Department Of Mechanical Engineering
Language: English
University location: Baghdad
First pages:

التصميم التشييدي لانابيب مزعنفة متعددة المقاسات مبردة بالحمل القسري == CONSTRUCTAL DESIGN OF MULTISCALE FINNED TUBES COOLED BY FORCED CONVECTION

Author name: نور يحيى عباس العبيدي
Supervisor name: احمد وحيد مصطفى | محمد خير الدين
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: Al-Nahrain University - College Of Engineering
Language: English
University location: Baghdad
First pages:

التحري عن سلوك المادة متغيرة الطورمع الوسائط المسامية بمنظومة الخزن الحراري باشكال مختلفة للانبوب الداخلي == AN INVESTIGATION OF PCM BEHAVIOUR WITH POROUS MEDIA IN THERMAL STORAGE SYSTEM WITH DIFFERENT INNER TUBE GEOMETRIES

Author name: عبد الرزاق محمد صالح الجميلي
Supervisor name: عقيل عبدالله محمد | ستار جبار حبيب
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: Al-Nahrain University - College Of Engineering
Language: English
University location: Baghdad
First pages:

الاداء الحراري لوحدة تخزين تستخدم مواد متغيرة الطور محسنة بالمواد المركبة في نظام تسخين المياه بالطاقة الشمسية ذو الانبوب المفرغ == THERMAL PERFORMANCE OF STORAGE UNIT USING COMPOSITE PHASE CHANGE MATERIALS FOR VACUUM TUBE SOLAR WATER HEATING SYSTEMS

Author name: يحيى فرج طه القيسي
Supervisor name: Abdul Jabbar N. Khalifa
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: Al-Nahrain University - College Of Engineering
Language: English
University location: Baghdad
First pages:

تاثير ابعاد وموقع الحز على الانحراف ، الانبعاج والاهتزاز الحر لعتبة متدرجة وظيفيا == The Effect of Notch Dimensions and Position on Deflection, Buckling and Free Vibration of Functionally Graded Beam

Author name: رغد عزيز نعمة
Supervisor name: Luay S. Alansari
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:

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:

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:

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:

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:

تحسين اداء نظام تكييف الهواء في الطقس الحار تجريبيا وعدديا باستخدام التبريد التبخيري مع مبادل السيفون الحراري == Improving the Performance of air Conditioning System in Hot Weather Experimentally and Numerically using Evaporation Cooling with Thermosyphon Heat Exchanger

Author name: رشا حيدر هاشم الخياط
Supervisor name: Salman H. Hammadi | Adel A. Eidan
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

دراسة عددية وتجريبية لانتاج الماء من الغلاف الجوي باستخدام وحدات مختلفة == NUMERICAL AND EXPERIMENTAL STUDY OF ATMOSPHERIC WATER PRODUCTION USING DIFFERENT UNITS

Author name: محمد راضي خنوبه
Supervisor name: Saleh E. Najim | Hussein S. Sultan,
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

البحث النظري والتجريبي لخصائص الكلال والاهتزاز للدائن المقواة == THEORETICAL AND EXPERIMENTAL INVESTIGATIONS OF FATIGUE AND VIBRATION CHARACTERISTICS OF REINFORCED ELASTOMERS

Author name: صدام خلصان كويس الرحيم
Supervisor name: Abdul kareem F. Hassan | Muhsin J. Jweeg
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

دراسة اداء محطة توليد الطاقة من المدخنة الشمسية لتحلية المياه في مدينة البصرة == STUDY THE PERFORMANCE OF SOLAR CHIMNEY POWER PLANT TO DESALINATION WATER IN BASRAH CITY

Author name: احسان ناظم جواد
Supervisor name: Qais A. Rishack | Hussein S. Sultan
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

تحسين اداء المجمع الشمسي ذو الانبوب المفرغ والمزود بانبوب حراري باستخدام نوعين من المواد متغيرة الطور == ENHANCEMENT OF THE PERFORMANCE OF HEAT PIPE EVACUATED TUBE SOLAR COLLECTOR INTEGRATED WITH DIFFERENT TYPES OF PCM

Author name: محمد جاسم صالح الشكري
Supervisor name: Adel A. Eidan | Saleh I. Najim
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

دراسة عملية ونظرية لمنظومة تبريد امتصاصية مستمرة مدمجة بمجمع شمسي مركز == EXPERIMENTAL AND THEORETICAL STUDY OF A PARABOLIC TROUGH SOLAR ABSORPTION COOLING SYSTEM WITH CONTINUOUS FLOW MODE

Author name: نبيل عبد الهادي غياض
Supervisor name: Haroun A.K. Shahad | Salman H. Hammadi
General topic: Mechanical Engineering
Specific topic: Electrical Engineering
Degree: Doctorate
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

الزحف, الاسترجاع والاسترخاء في اللدائن تحت تاثير انظمة احمال مركبة == CREEP, RECOVERY AND STRESS RELAXATION OF PLASTICS UNDER COMBINED LOAD SYSTEMS

Author name: علي هابل زعيبل
Supervisor name: abdul-amir s. resen
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: University Of Basrah - College Of Engineering - Department of Mechanics
Language: English
University location: Basrah
First pages:

دراسة الاداء الحراري لجريان ثنائي الطور في المكثفات == Thermal Performance Study of Two Phase Flow in Condensers

Author name: محمد غازي محمد كامل
Supervisor name: منى صباح قاسم
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: Mustansiriyah University - College Of Engineering - Department Of Mechanical Engineering
Language: English
University location: Baghdad
First pages:

دراسة الكفاءة الحرارية لمنظومة كهروحرارية لمجمع شمسي == Invistigation on the thermal effeciency for hybrid photovoltic/thermal solar collector

Author name: علي كاظم خداداد
Supervisor name: نصير كريم قاسم | فؤاد علوان صالح
General topic: Mechanical Engineering
Specific topic: Mechanical Engineering
Degree: Doctorate
University: Mustansiriyah University - College Of Engineering - Department Of Mechanical Engineering
Language: English
University location: Baghdad
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