With a distinct field of research studies focused by the department of materials engineering, which involved comprehensive researches and studies that highlight the role of engineering materials in developing the field of bio-medicine in current era, another dissertation, which entitled “Preparation of Ceramic Bio composite Scaffold for Bone Regeneration" for the postgraduate student “Oday Abd Muhtalf”, has been examined by a group of examiners, who their specialists relate to the science and engineering fields.

Examiners group were head by Dr. Emad Saady Abd- Al Kareem the professor in the metallurgy engineering, with other co-members who are Proff.Dr. Abd- alraheem kadhum, Proff.dr. Abd Ali Muhseen, Proff.Dr. Akram Raheem Jabr, Associate proff. Dr Hanaa Arreer Sameh.

The dissertation has been supervised by Dr. Alaa Abd Al-Hussan attieya, the Professor in the mechanical engineering area and Co-advised by the Professor in the science of materials, Dr. Saad Badry Hasoon.

The scientific evaluation shared by the efforts of both the Associate Professors who are dr. Esraa Qahtaan sabry from Babel university and dr. Sadeer Muafaq from university of Technology. On the other hand, the linguistic assessment was checked by associate professor.dr Alaa Abd Al-hady Jabir.

The examination included arguments mixed with interested scientific criticisms and ended by scoring “Oday” a degree of “Passed”, and awarding him a PhD degree at a condition to be acted to the examiners’ suggestion.

In an attendance style for all, the examination occurred in 17/1/2021, at the Department of the Materials Engineering.

Translated BY: Arwa F. Tawfeeq (30-1-2022)

Abstract

In this study, the preparation of porous scaffolds from hydroxyapatite (HAp),    13-93 bioactive glass (BG), and functionally graded material (FGM) from both of them have been accomplished using the infiltration technique of polyurethane sponge. The obtained results show that the EDX analysis of FG samples is promoted graded   of chemical compositions for HAp and 13-93BG. SEM showed that all prepared scaffolds have a highly interconnected porous structure with specific porosity gradients, about 73±2 %,    83±2 %, and 79±2 % for HAp, BG, and FGM scaffolds, respectively. Finally, the biocompatibility results were investigated in vitro involved the cytotoxicity by using MTT assay; the results demonstrated non-cytotoxic excretion for the scaffolds against the human osteoblast.

The President of the University of Technology awarded a book of thanks and appreciation to teaching staffs from the department of materials engineering.
The honorable president of the University of Technology “Prof Dr. Ahmed M. H. Al-Ghaban” awarded a book of thanks and appreciation to Prof. Dr. Emad S. Al- Hassani, Assist. Prof. Dr. Jawad K. Oleiwi, and Lec. Dr. Alaa A. Mohammed” from the Department of Materials Engineering/University of Technology, due to their distinguished efforts in achieved a patent, according to book No.  A.N.A/232 dated 14/12/2021.
The title of patent: “Manufacture of material as implants within the human body from polyetheretherketone (PEEK) as substitutes for metal implants”.
Abstract
Nanoindentation is a powerful technique to determine various mechanical properties of materials at the nanoscale, such as for example young’s modulus and hardness. Polyetheretherketone (PEEK) is a material that is widely used in medicine because its mechanical properties show excellent similarity to those of human bone. The main objective of this study is to conduct a manufacturing experiment nano polyetheretherketone composite for characterization of its mechanical properties using a tensile test and nanoindentation techniques of mechanical tests. The results of mechanical tests exhibit improvements of youngs modulus, hardness and ultimate tensile strength at 1.5 wt % for two types of reinforcement but the higher values obtained when reinforced by (nHA).

In accordance to the paper document No. SH. A. Q/787, On 06/12/ 2021, a letter of “THANKS and APPRECIATION” has been awarded by the president for the University of Technology to Mayada Shnaan Abd, the academic staff in the Department of Materials Engineering in the same University.
The researcher published her research which is entitled “Graphene preparation and graphite exfoliation” in “Turkish Journal of Chemistry”, which is involved within clarivate index. The publication has been accepted in current year and listed in volume 45.
It is very necessary to mention that awarding (Thanks & Appreciation) letters is one of the activities that have been used to achieve by the Presidency of the University of Technology as a part of the program for encouraging the academic scientific staff in the university to globally publishing.

As a part of the duties for the scientific committee in the department of the materials engineering, panel examiners of engineers’ staff have been formed to examine the PhD. dissertation related to the postgraduate student “Marwaan Abbas Madhloom”.
The formed panel examiners staff were head by the Professor Dr. Alaa Abd Al-Hussan attieya, with the other co-members of the examiners who are (Prof. Dr. Jasim Muhammed Salman, Prof. Dr. Emad Saady Abd- Al Kareem, Prof. Dr Jumaa Salman Jeyad, Associate Prof. Fadhil Abbass Hashim).
The dissertation which has been about "Study The Effect of Isothermal, Cold and Cryogenic Treatments on Monotonic and Cyclic Properties of Aluminum Alloy Type Al-Mg-Si" has been supervised by Professor Dr. Ali Hussien Attaiwei and co- advised by the associate Proff. Dr. Jamal Jallal Dawood. In addition, it was evaluated scientifically by the Professors Ali Sadiq Yaseer and Ayad Muraad Takhakh, and linguistically by associate lecture Hussam Hussien Ali.         
After deep discussion and lots of arguments made by the panel faced by big challenges from Madhloom to prove his point of view at some dark spots in his dissertation. The examination has been ended by scoring Madhloom a degree of “Passed”, and awarding him a PhD degree at a condition to be acted to the examiners’ suggestion.
In an attendance style for all, the examination occurred in 15/12/2021, at the Department of the Materials Engineering.

Translated by: Dr. Arwa Faraj Tawfeeq; 24/12/2021


Abstract
This research attempts to study the influence of annealing, precipitation hardening, and nitriding treatments on monotonic and repeated characteristics and microstructural inspections of AA6061. Quenching mediums are water, local freezer, dry ice, and liquid nitrogen. Ageing temperatures of (170, 200, and 230)°C are used for intervals of (2, 4, 6, 8, and 10) hours. Plasma nitriding treatment was performed on  alloy to enhance its hardness and wear opposition. The best ageing interval is (6) hours. Hardness, impact and fatigue resistance are improved after nitriding and quenching in liquid nitrogen.