Husam Kareem Mohsin Al-Jothery
@qu.edu.iq
Mechanical Engineering Department/ Collage of Engineering
Mechanical Engineering Department/ University of Al-Qadisiyah
EDUCATION
PhD in Mechanical Engineering
RESEARCH INTERESTS
Solid and Structural Mechanics, Origami Structures, Electromagnetic Wave Applications, Robotic Design, Advanced materials Analys, Ultra-High Temperatur Materials, Modren Technologies for Ceramics and Magnetism.
FUTURE PROJECTS
Experimental Evaluation of Self-Recovery of Thin-Shell Origami Structure for Automotive Application
Applications Invited
Scopus Publications
Scopus Publications
Ahmed Al-Rubaye, Husam Kareem Mohsin Al-Jothery, and Kadhim K. Al-Chlaihawi
International Information and Engineering Technology Association
Najib Mohammed Sultan, Thar M. Badri Albarody, Masri Baharom, Husam Kareem Mohsin Al-Jothery, and Haetham G. Mohammed
Akademia Baru Publishing
In this paper, magnetic properties of β-SiC nanoparticles have been studied. Results showed intrinsic at room temperature. The applied magnetic field observes a magnetization value of 50.972E-3 emu/g with remnant magnetization is 3E-3 emu/g. The measured value of coercivity found to be 89.068 G at squareness ratio is 0.043524. The room temperature ferromagnetic in β-SiC possibly originated from dangling effect vacancy of silicon and carbon with the nearest neighbour carbon atom have strong s-p hybridization. The result of this paper might indicate a promising pathway of developing a novel spintronics based β-SiC nanoparticle.
H K M Al-Jothery, T M B Albarody, N M Sultan, H G Mohammed, P S M Megat-Yusoff, N Almuramady, and W J A AL-Nidawi
IOP Publishing
Abstract Silicon carbide is a crucial structure material because of its wide applications in different fields, such as electronics. The impurities have negative impact on the homogenous sinterability of nano SiC during the sintering process, especially the silicon dioxide. So, the consolidation of SiC nanopowders was conducted by the microwave-current assisted sintering process. Field emission scanning electron microscope (FESEM), energy dispersive x-ray spectroscopy (EDS) and x-ray diffraction (XRD) were utilised to examine the nanopowders and sintered samples of SiC. The results showed that the smallest average grain sizes of sintered specimens of treated and untreated-SiC nanopowders were 331 and 428 nm, respectively. The relative densities of sintered specimens of treated and untreated-SiC nanopowders were around 97.1% and 93.8%, respectively. In conclusion, the nanostructure of sintered SiC was the benchmark of the microwave-current assisted sintering technique.
Haetham G. Mohammed, Marwan Ahmed Abdullah Alasali, Thar Mohammed Badri Aboody, and Husam Kareem Mohsin AlJothery
IEEE
This paper introduces a new spark plasma sintering technique that can order crystalline anisotropy by the coaxial flat spiral coils which have been designed, modeled, and installed to work in coupled with the Spark Plasma Sintering (SPS) as a new sintering method called In-situ magnetic-anisotropy spark plasma sintering (MASPS) which has been used to produce anisotropic magnets by aligning the grains of the sintered powder. The two spiral coils have been connected to the cathode and anode of the SPS machine. The magnetic field generated from the coils has been designed and simulated using ANSYS MAXWELL software, and experimentally the field was measured manually using the gauss meter instrument. The excitation currents are 150, 200, 250, 300, and 350 A. Based on the results obtained the maximum magnetic field intensity and strength, at exciting currents of 150, 200, 250, 300, and 350 A are 3.0859 × 104 4.115×104, 5.1432×104, 6.1718×104, 7.2005×104 A/m, and 37.327, 49.769, 62.211, 74.653, and 90.400 mT respectively.
N. M. Sultan, Thar M. Badri Albarody, Husam Kareem Mohsin Al-Jothery, Monis Abdulmanan Abdullah, Haetham G. Mohammed, and Kingsley Onyebuchi Obodo
MDPI AG
In situ X-ray crystallography powder diffraction studies on beta silicon carbide (3C-SiC) in the temperature range 25–800 °C at the maximum peak (111) are reported. At 25 °C, it was found that the lattice parameter is 4.596 Å, and coefficient thermal expansion (CTE) is 2.4 ×10−6/°C. The coefficient of thermal expansion along a-direction was established to follow a second order polynomial relationship with temperature (α11=−1.423×10−12T2+4.973×10−9T+2.269×10−6). CASTEP codes were utilized to calculate the phonon frequency of 3C-SiC at various pressures using density function theory. Using the Gruneisen formalism, the computational coefficient of thermal expansion was found to be 2.2 ×10−6/°C. The novelty of this work lies in the adoption of two-step thermal expansion determination for 3C-SiC using both experimental and computational techniques.
Haetham G. Mohammed, Thar Mohammed Badri Albarody, Husam Kareem Mohsin Al-Jothery, Mazli Mustapha, and N.M Sultan
Elsevier BV
H. K. M. Al-Jothery, Thar M. Albarody, P. S. M. Megat-Yusof, N. Al-Shaibani, and H. G. Mohammed
Universiti Malaysia Pahang Publishing
In the current-assisted sintering technique, graphite is mainly used to fabricate die and other components (such as electrodes and spacers) because of its excellent thermoelectric properties, high melting point and high ratio of the tensile strength to the compressive strength. As widely known, graphite is one of the brittle materials, and the failure is difficult to be anticipated before it happens. Besides, there is a lack of information about the effects of sintering process, environment and impurity on the graphite structure of the furnace, especially the die, which is the weakest part of the graphite structure. Therefore, the effects of electrical field and oxidation on the graphite die of microwave-current assisted sintering apparatus were investigated at a high temperature of 600-1900 °C based on physical characteristics and mechanical strength. In this article, the spark discharge phenomenon was experimentally proved during the sintering process of nonconductive material. The tensile strength of the upper punch after the sintering process was 20.2% higher than the pristine one because of the transforming of micro-graphite to carbon nanotubes which increased with increasing the temperature. On the other hand, the tensile strengths of graphite lower punch and sleeve were slightly dropped. While, the oxidation of GW-6S graphite in the air caused a mass loss that led to the reduction in tensile and compressive strengths.
Haetham G. Mohammed, Thar Mohammed Badri Albarody, Mazli Mustapha, N.M. Sultan, and H.K.M. Al-Jothery
Elsevier BV
H K M Al-Jothery, T M B Albarody, P S M Yusoff, M A Abdullah, and A R Hussein
IOP Publishing
Abstract Ultra-High Temperature Materials (UHTMs) are at the base of entire aerospace industry; these high stable materials at temperatures exceeding 1600 °C are used to manage the heat shielding to protect vehicles and probes during the hypersonic flight through reentry trajectory against aerodynamic heating and reducing plasma surface interaction. Those materials are also recognized as Thermal Protection System Materials (TPSMs). The structural materials used during the high-temperature oxidizing environment are mainly limited to SiC, oxide ceramics, and composites. In addition to that, silicon-based ceramic has a maximum-use at 1700 °C approximately; as it is an active oxidation process over low temperature and water vapor environment condition. However, a great emphasis is required for developing structural materials in oxidation and rapid heating environment where the temperature is greater than 1700 °C. This review covers briefly all main types of Thermal Protection Systems (TPSs) and all the materials are used to fabricate them with the maximum operational temperatures. Also, it covers the promised UHTMs (SiC, ZrB2, HfB2, SiB6 and B4C) which are currently using for several aerospace applications, especially for TPS. Besides, it discusses the oxidation of SiC, B4C, SiB6, ZrB2 and HfB2. Therefore, the carbides and borides of the transition metals, Zr and Hf have a high-melting temperature and good stability in forming high-melting temperature oxides.
Alaa Raad Hussein, Thar M. Badri Albarody, Reza Alebrahim, M. Fayaz Bin Abd Hannan, Husam K. M. Al-Jothery, Monis Abdulmanan Abdullah, and Najib Al-Shaibani
Springer Science and Business Media LLC
H. K. M. Al-Jothery, T. M. B. Albarody, P. S. B. M. Yusoff, M. A. Abdullah, A. R. Hussein, and M. F. B. M. Pahmi
Universiti Malaysia Pahang Publishing
Corrugations can be considered to be one of the ways to improve the mechanical properties of thin-walled structure in terms of manipulation of surface area. However, this theory requires further validation through experimentation of different materials. Although many research works have been done towards the corrugated shell structures, the flexibility of corrugated sheets of thermoset composite material remains unknown. This study focused on the effects of surface area manipulation by using trapezoid origami structure which is trapezoidal folded lobe shape on the absorbed energy and mechanical properties of Epoxy reinforced with S-type fibreglass. Then the trapezoidal folded lobe shape design was drawn by using AutoCAD which consist of the design of the corrugated composite sheets and the design of trapezoidal folded lobe shape mould. Moreover, the fabrication of the Aluminum mould was done by using a CNC milling machine according to the drawing. So, a compression moulding machine will be used to fabricate the composite structure. Therefore, the vibration and compression tests were carried out to perform a study on the behaviour of the trapezoidal folded lobe thermoset samples and to investigate their deformation behaviour respectively. Based on those tests, the results are shown that the trapezoidal origami samples have higher virtual stiffness than the flat samples, and the trapezoidal origami crash thin wall absorbs 40 % more energy in Y-axis direction compared to in X-axis direction.
Thar M. Badri Albarody, Husam Kareem Mohsin Al-Jothery, Alaa Raad Hussein, Loh Zi Teng, Ali Samer Muhsan, and Faiz Ahmad
Author(s)
This paper introduces an innovative alternative for spark sintering, in which contactless plasma sintering (CPS) is accomplished by means of plasma arc. In this arrangement, arc current will not pass through the sample to be sintered allowing sample to not contact the arc plasma electrodes. Consequently, this method provides continuous sintering. SiC whiskers was chosen to characterize sintering parameter. The SiC refined by ball-milling to promote densification. Characterization of Silicon Carbide (SiC) were carried out with Field Emission Scanning Electron Microscope (FESEM) and X-Ray Diffraction (XRD). The effect of the sintering-agent Fe addition on the sintered SiC-Fe composites were investigated based on the microstructure, densification.This paper introduces an innovative alternative for spark sintering, in which contactless plasma sintering (CPS) is accomplished by means of plasma arc. In this arrangement, arc current will not pass through the sample to be sintered allowing sample to not contact the arc plasma electrodes. Consequently, this method provides continuous sintering. SiC whiskers was chosen to characterize sintering parameter. The SiC refined by ball-milling to promote densification. Characterization of Silicon Carbide (SiC) were carried out with Field Emission Scanning Electron Microscope (FESEM) and X-Ray Diffraction (XRD). The effect of the sintering-agent Fe addition on the sintered SiC-Fe composites were investigated based on the microstructure, densification.
Alaa Raad Hussein, Thar M. Badri Albarody, Puteri Sri Melor Bt M. Yousf, Monis Abdulmanan Abdullah, and Husam Kareem Mohsin Al-Jothery
EDP Sciences
The need for wireless sensing technology has rapidly increased recently, specifically the usage of electromagnetic waves which becoming more required as a source of information. Silicon carbide (SiC) Nano particles has been used in this study, the material under test (MUT) was exposed directly to a microwave field to examine the electromagnetic behavior. The permittivity and permeability were investigated with different filler materials to approach best and optimal electromagnetic absorbing characteristics to assist engineers to monitor structure-based composite for defects evaluation that may occur during operation conditions or through manufacturing process. XRD, FESEM and both complex permittivity and permeability were measured for the pure materials that candidate for this study. The results showed that all the selected nanostructure material exhibit a good purity with proper electromagnetic properties in the X- band, this can lead to absorbing and transmission properties that can be used in monitoring structures or manufactured part during fabrication process.
Husam Kareem Mohsin Al-Jothery and Khairul Salleh Mohamed Sahari
IEEE
Robotic technology has become more interested field to safely interact with the human. Therefore, there is a need to continuously improve the mathematical models and flexibility of robot arm when subjected to a collision force in order to reduce environmental impact, but maintain very high stiffness otherwise. To implement these requirements, adjustable compliant mechanism (ACM), which consists of flat plate spring (FPS), two thin disks, ball bearing and stepper motor, is proposed in this research. The ACM has advantages of variable stiffness which can be achieved only by passive mechanical elements. The theoretical relation between spring stiffness and rotational angle was derived for rectangular cross section. Comparison was made between three types of materials used for FPS which were AISI Steel 4340, Brass and Aluminum 6061 T6. The steel spring exhibited the best flexibility and good rigidity as well. Several of impact forces showed the variable stiffness of the FPS, but an abrupt drops in the stiffness when rotational angle was 90° under various impact forces. Furthermore, the stiffness and impact force can be set to any value depending on the application.