Characterization of the mechanical properties and thermal conductivity of epoxy-silica functionally graded materials Jaafar Sh. AbdulRazaq, Abdul Kareem F. Hassan, Nuha H. Jasim Aims Materials Science, 2023 <abstract> <p>A functionally graded material (FGM) was prepared using epoxy resin reinforced with silicon dioxide with a particle size of 100 μm and weight percentages of 0, 20, 40, 60, and 80 wt%. In a gravity-molding process using the hand layup technique, specimens with international standard (ASTM)-calculated dimensions were created in a mold of poly(methyl methacrylate), which is also known as acrylic. Tensile, flexural, impact, infrared wave, and thermal conductivity tests, and X-ray diffraction (XRD) were conducted on specimens of the five layers of the FGM. The XRD and infrared spectroscopy demonstrated that the compositions of the silica particles and epoxy had a strong association with their physical structures. The findings of experimental tests indicated that increasing the ratio of silicon dioxide enhanced the mechanical properties, and the increase in modulus of elasticity was directly related to the weight percentage of the reinforcement material. The composite with 80% silica had a 526.88% higher modulus of elasticity than the pure epoxy specimen. Both tensile and flexural strengths of the composite material were maximal when 40 wt% of the particle silicon dioxide was utilized, which were 68.5% and 67.8% higher than those of the neat epoxy, respectively. The test results also revealed that the impact resistance of the FGM increased when the silica proportion increased, with a maximum value of 60 wt% silica particle content, which was an increase of 76.98% compared to pure epoxy. In addition, the thermal properties of epoxy resin improved when SiO<sub>2</sub> was added to the mixture. Thus, the addition of silica filler to composite materials directly proportionally increased their thermal conductivity to the weight ratio of the reinforcement material, which was 32.68–383.66%. FGM composed of up to 80% silica particles had the highest thermal conductivity.</p> </abstract>
Experimental study on repair of cracked pipe under internal pressure Ali Abduljabbar, Haider Khazal, Abdul Kareem F. Hassan Periodicals of Engineering and Natural Sciences, 2022 Repair of cracked pipeline under internal pressure has been investigated in the present study. To this aim, an experimental test has been done on the cracked pipeline to find failure pressure. A longitudinal crack that cut 65% thickness of pipe has been applied on the external surface. Carbon fiber reinforced polymer has been used to repair the system. Additionally, a finite element model has been developed to estimate failure pressure of the unrepaired pipes. The results show that the failure pressure in unrepaired pipes is identical to the failure pressure predicted by the standards for corroded pipes, however, the failure pressure of repaired system is lower than the predicted results of standard for corroded pipelines.
An Investigation into the Effect of Adding Carbon and Glass Fibres to UHMWPE Fibres on the Mechanical Characteristics of a Sports Prosthetic Foot Hayder Kareem Talla, Abdul Kareem F. Hassan, Jawad Kadhim Oleiwi Revue Des Composites Et Des Materiaux Avances, 2022 Due to their qualities and advantages, such as light weight, high rigidity, and high performance, composite materials have been used in a wide variety of industries and sectors. For example, carbon fibres are used in the construction of aircraft, while ultrahigh-molecular-weight polyethylene (UHMWPE) is used in the fabrication of medical artificial joints. In this study, the blade dimensions were estimated using side profiles from a European patent specification and the mechanical properties of numerous layers of composite materials (UHMWPE, carbon, glass fibre, and Perlon) utilized in the fabrication of sports prosthesis were investigated experimentally, theoretically, and numerically, and the results were compared, as well as the theory of failure calculated. The influence of data entered into the ANSYS programme was also investigated in the case of isotropic or orthotropic materials. The findings indicate that longitudinal young modules are experimentally and theoretically equivalent. While the material ISO or Ortho is considered and its information is entered into the ANSYS programme for the same lamina, similar results are obtained under the same boundary condition, as was demonstrated when computing the theory of failure. Additionally, it was demonstrated in this research that layering woven carbon fibre on top of layers of UHMWPE woven fabrics had a greater effect than layering woven glass fibre when fabricating the sports prosthetic foot.
On the determination of first-mode stress intensity factors and T-stress in a continuous functionally graded beam using digital image correlation method Ahmed M. Abood, Haider Khazal, Abdulkareem F. Hassan Aims Materials Science, 2022 <abstract> <p>In this study, fracture parameters of epoxy/glass functionally graded composite were determined experimentally using the digital image correlation (DIC) method. A functionally graded material (FGM) with continuous variation in elastic properties was manufactured by gravity casting in vertical template. A 30% volume fraction of glass spheres was dispersed in a low viscosity resin. A single edge crack specimen was examined in a three-point bending test under mode Ⅰ loading with cracks along the gradient tendency of the material properties. The mechanical properties of FGM were calculated according to ASTM D638. The DIC technique was adopted to obtain the deformation region around the crack tip. William's series was employed to calculate stress intensity factor and T-stress. The experimental results then verified by solving the FE model using ABAQUS program. The comparison between DIC and numerical results illustrated a largely acceptable achievement.</p> </abstract>
Performance of athletic prosthetic feet made of various composite materials with pmma matrix: numerical and theoretical study Hayder Kareem Talla, Jawad Kadhim Oleiwi, Abdul Kareem F. Hassan Revue Des Composites Et Des Materiaux Avances, 2021 Prosthetic upgrades are specialized prosthetics that enable patients to participate in more demanding recreational activities, such as running. This study examines the use of prosthetic limbs, specifically the athletic prosthetic foot. The current research focused on the manufacturing and production properties of an samples athletic prosthetic Foot made from composite materials based on a polymethyl methacrylate resin (PMMA) reinforced with various fibers (UHMWPE, Perlon, Carbon fiber, and Glass fiber). The finite element method (ANSYS-19R) is used to build an athletic prosthetic model and apply boundary conditions to investigate the influence of deformation and stored energy on the performance of the sports prosthetic foot. Six laminates have been manufactured, and it has been discovered that adding a number of carbon fiber layers to UHMWPE has a better effect on deformation than adding a glass fiber 26% improvement. Furthermore, the findings show there is an improvement in performance when the number of classes was doubled, as the rate of improvement between the laminate to which carbon fibers were added was 31%, and between the laminate to which glass fibers were added by 32% under the same boundary conditions.
Fracture analysis of functionally graded material using digital image correlation technique and extended element-free Galerkin method Wafaa Farouq, Haider Khazal, Abdul Kareem F. Hassan Optics and Lasers in Engineering, 2019 This work aims to experimentally investigate the mechanical properties and fracture analysis of a functionally graded material (FGM) made from sphere glass and epoxy resin composites using a hand lay-up process. The stress intensity factor is determined by the digital image correlation (DIC) technique for the compact tension specimen. The results of the DIC technique are compared using the meshless extended element-free Galerkin method. The applicability of the experimental method is demonstrated for a five-layered epoxy/glass FGM with layers ranging from pure epoxy to 60% glass–40% epoxy in the glass-rich side. The relevant results obtained from the experimental work agreed well with those of the numerical method. This study is important for researchers to address the unavailability of an explicit code and standard in the hand lay-up process and conforming specifications of the fracture mechanism of FGMs.
Computation of fracture parameters in stepwise functionally graded materials using digital image correlation technique Haider Khazal, Abdul Kareem F. Hassan, Wafaa Farouq, Hamid Bayesteh Materials Performance and Characterization, 2019 This research reports the computation of the fracture parameters, namely T-stress and stress intensity factors of a stepwise functionally graded material (FGM) by using the digital image correlation technique. A five-layer epoxy/glass FGM with layers varying from pure epoxy to 60 % glass/40 % epoxy was investigated. The effects of the crack-tip positions and crack length on the nonsingular terms were analyzed. In addition, the numerical simulation of the layered FGM was investigated to further evaluate the fracture parameters. The numerical and experimental model results were compared, and good agreement was obtained between the experimental and numerical tests. Accordingly, the numerical models developed with the corresponding material properties can be used for the evaluation of fracture parameters of the developed FGM.
Experimental and Numerical Investigation of Deep Drawing Process for Carbon Fiber Reinforced High Density Polyethylene (CF-HDPE) Composites MJ Ziedan, AKF Hassan, NA Saad Basrah Journal for Engineering Sciences 25 (2), 11-18 , 2025 2025
Experimental Study Of Deep Drawing Of High-Strength Carbon Fiber-HDPE Composites MJ Ziedan, AF Hassan, NA Saad, A Al-Mukhtar Journal of Applied Science and Engineering 28 (12), 2505-2513 , 2025 2025
A Comprehensive Review of Forming Methods for Composite Materials and Cracking MJ Ziedan, AKF Hassan, NA Saad, AM Al-Mukhtar Procedia Structural Integrity 66, 229-246 , 2024 2024 Citations: 2
Epoxy–silica functionally graded materials: a review JS AbdulRazaq, AKF Hassan, NHJ Al Hasan Basrah Journal for Engineering Sciences 23 (2), 26-33 , 2023 2023 Citations: 5
Characterization of the mechanical properties and thermal conductivity of epoxy-silica functionally graded materials. JS AbdulRazaq, AKF Hassan, NH Jasim AIMS Materials Science 10 (1) , 2023 2023 Citations: 11
Experimental study on repair of cracked pipe under internal pressure A Abduljabbar, H Khazal, AKF Hassan Periodicals of Engineering and Natural Sciences 10 (6), 67-76 , 2022 2022 Citations: 2
Study the effect of reinforcing kevlar fibers with carbon fibers and glass fibers on the performance of the athletic prosthetic foot HK Talla, AKF Hassan, JK Oleiwi Basrah Journal for Engineering Sciences 22 (2), 41-48 , 2022 2022 Citations: 12
Experimental and finite element modeling in dry drilling of stainless steel AISI 304 AM Kadhim, AF Hassan, QA Rishack AIP Conference Proceedings 2660 (1), 020016 , 2022 2022
2-D actuator based shape memory alloy using PID controller HF Abdulkadhim, AF Hassan, AH Abdulaali Basrah Journal for Engineering Sciences 22 (1), 1-8 , 2022 2022 Citations: 1
An investigation into the effect of adding carbon and glass fibres to UHMWPE fibres on the mechanical characteristics of a sports prosthetic foot HK Talla, AKF Hassan, JK Oleiwi Revue des Composites et des Matériaux Avancés 32 (2), 69 , 2022 2022 Citations: 6
Isolation and molecular characterization of the pathogens Trichoderma harzianum and Pseudomonas tolaasii on the edible mushroom Agaricus bisporus and evaluation of some desert … AA Hassan, IAA Bed, AF Shafeeq, IA Abed Tikrit Journal for Agricultural Sciences 22 (1), 134-148 , 2022 2022 Citations: 22
Dynamic Properties of Rubber Blends (NR/BR. cis) Under the Effect of Different Blending Ratio and Carbon Black Type SK Al-Raheem, AKF Hassan, MJ Jweeg 2022
Experimental, finite element and statistical analysis of temperature generated in AISI 304 stainless steel during drilling operation A Majid, AF Hassan, QA Abdulhassan Rishack Kerbala J Eng Sci 2 (2), 73-95 , 2022 2022 Citations: 3
A review of functionally graded materials including their manufacture and applications AF Hassan, AM Abood, HI Khalaf, W Farouq, H Khazal Int J Mech Eng 7 (1), 744-755 , 2022 2022 Citations: 18
On the determination of first-mode stress intensity factors and T-stress in a continuous functionally graded beam using digital image correlation method. AM Abood, H Khaza, AF Hassan AIMS Materials Science 9 (1) , 2022 2022 Citations: 8
The effect of machining parameters and drill point angle on the temperature distribution in AISI 304 stainless steel during dry drilling operation AM Kadhim, AF Hassan, QA Rishack Basrah Journal for Engineering Sciences 21 (3), 25-33 , 2021 2021 Citations: 4
Performance of Athletic Prosthetic Feet Made of Various Composite Materials with PMMA Matrix: Numerical and Theoretical Study. HK Talla, JK Oleiwi, AKF Hassan Journal of Composite & Advanced Materials/Revue des Composites et des … , 2021 2021 Citations: 31
WITHDRAWN: Evaluation of mixed-mode stress intensity factor and T-stress in continuous epoxy glass functionally graded beam using digital image correlation AM Abood, H Khazal, AF Hassan Materials Today: Proceedings , 2021 2021 Citations: 9
WITHDRAWN: Crack analysis of functionally graded materials under thermal loading using extended element free Galerkin method W Farouq, H Khazal, AKF Hassan Materials Today: Proceedings , 2021 2021 Citations: 5
Estimation of submerged arc plates weldment properties using anfis and regression techniques AKF Hassan, RJ Jasim, YY Ashoor Basrah Journal for Engineering Sciences 20 (2), 27-33 , 2020 2020 Citations: 3
MOST CITED SCHOLAR PUBLICATIONS
Three dimensional finite element analysis of wire drawing process AKF Hassan, AS Hashim Universal Journal of Mechanical Engineering 3 (3), 71-82 , 2015 2015 Citations: 33
Performance of Athletic Prosthetic Feet Made of Various Composite Materials with PMMA Matrix: Numerical and Theoretical Study. HK Talla, JK Oleiwi, AKF Hassan Journal of Composite & Advanced Materials/Revue des Composites et des … , 2021 2021 Citations: 31
Artificial neural network model for estimation of wear and temperature in pin-disc contact AKF Hassan, S Mohammed Universal Journal of Mechanical Engineering 4 (2), 39-49 , 2016 2016 Citations: 30
New methodology for prestressing fiber composites AKF Hassan, OA Abdullah Univers. J. Mech. Eng 3 (6), 252-261 , 2015 2015 Citations: 25
Isolation and molecular characterization of the pathogens Trichoderma harzianum and Pseudomonas tolaasii on the edible mushroom Agaricus bisporus and evaluation of some desert … AA Hassan, IAA Bed, AF Shafeeq, IA Abed Tikrit Journal for Agricultural Sciences 22 (1), 134-148 , 2022 2022 Citations: 22
Fracture analysis of functionally graded material using digital image correlation technique and extended element-free Galerkin method W Farouq, H Khazal, AKF Hassan Optics and Lasers in Engineering 121, 307-322 , 2019 2019 Citations: 22
A review of functionally graded materials including their manufacture and applications AF Hassan, AM Abood, HI Khalaf, W Farouq, H Khazal Int J Mech Eng 7 (1), 744-755 , 2022 2022 Citations: 18
Experimental and artificial neural network ANN investigation of bending fatigue behavior of glass fiber/polyester composite shafts AKF Hassan, LS Mohammed, HJ Abdulsamad Journal of the Brazilian Society of Mechanical Sciences and Engineering 40 … , 2018 2018 Citations: 17
Effect of prestress level on the strength of CFRP composite laminate OA Abdullah, AKF Hassan Journal of Mechanical Science and Technology 30 (11), 5115-5123 , 2016 2016 Citations: 16
Study the effect of reinforcing kevlar fibers with carbon fibers and glass fibers on the performance of the athletic prosthetic foot HK Talla, AKF Hassan, JK Oleiwi Basrah Journal for Engineering Sciences 22 (2), 41-48 , 2022 2022 Citations: 12
Characterization of the mechanical properties and thermal conductivity of epoxy-silica functionally graded materials. JS AbdulRazaq, AKF Hassan, NH Jasim AIMS Materials Science 10 (1) , 2023 2023 Citations: 11
The role of irrigation management processes and micronutrient fertilization on parameter of growth and yield of two wheat varieties H Abdulrazzaq, A Ati, A Hassan International Journal of Agricultural Statistical Sciences 14 (1), 125-128 , 2018 2018 Citations: 11
Computation of fracture parameters in stepwise functionally graded materials using digital Image correlation technique H Khazal, AKF Hassan, W Farouq, H Bayesteh Materials Performance and Characterization 8 (1), 344-354 , 2019 2019 Citations: 10
WITHDRAWN: Evaluation of mixed-mode stress intensity factor and T-stress in continuous epoxy glass functionally graded beam using digital image correlation AM Abood, H Khazal, AF Hassan Materials Today: Proceedings , 2021 2021 Citations: 9
Investigation of the effect of austenitizing temperature and multiple tempering on the mechanical properties of AISI 410 martensitic stainless steel AKF Hassan, QA Jawad The Iraqi J. Mechan. Mater. Eng. Special Volume Babylon First Intern. Eng … , 2016 2016 Citations: 9
On the determination of first-mode stress intensity factors and T-stress in a continuous functionally graded beam using digital image correlation method. AM Abood, H Khaza, AF Hassan AIMS Materials Science 9 (1) , 2022 2022 Citations: 8
An investigation into the effect of adding carbon and glass fibres to UHMWPE fibres on the mechanical characteristics of a sports prosthetic foot HK Talla, AKF Hassan, JK Oleiwi Revue des Composites et des Matériaux Avancés 32 (2), 69 , 2022 2022 Citations: 6
Epoxy–silica functionally graded materials: a review JS AbdulRazaq, AKF Hassan, NHJ Al Hasan Basrah Journal for Engineering Sciences 23 (2), 26-33 , 2023 2023 Citations: 5
WITHDRAWN: Crack analysis of functionally graded materials under thermal loading using extended element free Galerkin method W Farouq, H Khazal, AKF Hassan Materials Today: Proceedings , 2021 2021 Citations: 5
Estimation of austenitizing and multiple tempering temperatures from the mechanical properties of AISI 410 using artificial neural network AKF Hassan, QA Jawad International Journal of Engineering & Technology 7 (4.19), 778-787 , 2018 2018 Citations: 5