Advanced Materials and Smart Infrastructure Systems (AMSIS)
Muhammad M. Sherif
Assistant Professor
Advanced Materials and Smart Infrastructure Systems (AMSIS)
GoogleScholar & ResearchGate Records

Citations 177
h-index 7
i10-index 6
RG-Score 17.88
Reads 1978







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Updated:  08 March 2021
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Muhammad M. Sherif
Assistant Professor

Ph.D. 2018 - University of Virginia, USA
M.S. 2013 - Carnegie Mellon University, USA
B.S. 2011 - United Arab Emirates University, UAE

Advanced Materials and Smart Infrastructure Systems (AMSIS)
Department of Civil, Construction and Environmental Engineering
University of Alabama - Birmingham (UAB)
Hoehn Engineering Building, Office 331
Phone: (205) 934-8436

E-mail: msherif@uab.edu


12/2/2020
Ugur Kilic, Sherif M. Daghash, Muhammad M. Sherif* & Osman E. Ozbulut

This article explores the tensile deformation and failure characteristics of a hybrid composite where microscale shape memory alloy (SMA) fibers and nanoscale graphene nanoplatelets (GNPs) were used to reinforce a ductile epoxy matrix. First, the GNPs were incorporated into epoxy system using a hybrid dispersion technique at various weight percentages ranging from 0.25 to 2.50?wt%. The mechanical properties of GNP composites were investigated using monotonic uniaxial tensile tests to failure and were compared to neat epoxy. The GNP concentration that resulted in highest enhancement in tensile properties of the epoxy was identified. Then, the GNP/SMA/epoxy composites were fabricated using a vacuum assisted hand lay-up technique. The composites were reinforced with SMA fibers at 50% volume ratio and an optimal GNP concentration was added. The tensile response of the developed composites was characterized using full-field… Details
12/1/2020
John V. Christy, Abdel-Hamid I. Mourad, Sudhir Tiwari & Muhammad M. Sherif*

This paper examines the mechanical, abrasive and erosive wear properties of a thermal spray enhanced with randomly dispersed solid lubricants. Two different solid lubricants including graphite and polytetrafluoroethylene (PTFE) were mixed with a NiAl2O3 thermal spray to develop a stable thermal coating. The solid lubricants increased the wear resistance of the coating upon the erosion of the spray cover due to the friction of the mating surfaces. The wear and abrasive resistance were investigated by applying the developed thermal coating to a substrate manufactured by Bakelite. The maximum erosion rate was observed upon blasting abrasive Al2O3 powder at 30-degree angle and at an elevated temperature of 160°C. Spray coating with graphite illustrated a stronger surface adhesion and consisted of a superior hardness strength. A sliding steel indenter of 3 mm diameter and a 9 mm stroke length with speeds ranging … Details
12/1/2020
Zhangfan Jiang, Muhammad M. Sherif*, Guohua Xing & Osman E. Ozbulut

This study characterizes tensile behavior of graphene nanoplatelets (GNPs) reinforced cementitious composites using acoustic emissions (AE). Two acoustic sensors were attached to dog-bone specimens that were cast using GNP nano-reinforced mortar composites at concentration levels of 0% to 0.5 % by weight of cement. The specimens were tested under direct tensile loading and the average tensile strength was calculated. AE parameters such as average frequency (AF) and rise time over amplitude (RA) were used to analyze the cracking mode. Average RA was studied to investigate the effect of GNPs reinforcement. A correlation between average acoustic energy and the tensile strength was established. In addition, the acoustic emissions data was analyzed for the localization of cracks along the length of the specimens. Results indicated that the addition of GNPs increased the tensile strength of the cementitious composites by … Details
7/28/2020
Muhammad M. Sherif* & Osman E. Ozbulut

Superelastic shape memory alloys are a unique class of smart materials that can recover up to 6% strains. Due to their appealing properties such as high energy dissipation and corrosion resistance, several researchers have assessed the use of such materials in numerous applications ranging from biomedical to civil engineering. This article investigates the thermomechanical and electrical response of a NiTi shape memory alloy cable with a complex configuration subjected to cyclic loading of various strain amplitudes ranging from 3% to 7%. The cable consists of several multi-layered strands with a cumulative outer diameter of 5.5?mm. The thermomechanical results indicate a good correlation of the change in cable temperature with the applied strains and maximum stresses. The temperature history can be used to map the degradation pattern of the shape memory alloy cable. In addition, due to the complex geometry of the cable, the global electrical resistance… Details
4/29/2020
Amedebrhan M. Asfaw, Muhammad M. Sherif*, Guohua Xing, Osman E. Ozbulut

This paper examines the buckling and post-buckling behavior of superelastic shape memory alloy (SMA) bars. A NiTi SMA bar with a diameter of 12 mm was used in all the experimental tests. First, the tensile and compression responses of NiTi bar were characterized under monotonic loading up to failure. A total of 15 specimens with slenderness ratios that range from 25 to 115 were tested to study the critical buckling load and post-buckling behavior of SMA bars. Digital image correlation (DIC) system was implemented to monitor full-field surface displacements. The interaction between material nonlinearity due to phase transformation and geometric nonlinearity was explored. Data obtained from the DIC measurement system were further analyzed to identify the onset of buckling and to extract experimental critical buckling loads. The effect of loading rate on buckling response of SMAs was investigated by conducting additional… Details
3/24/2020
Abdel-Hamid I. Mourad, Amir Hussain Idrisi, Nizar Zaaroura, Muhammad M.Sherif* & Hasan Fouad

The resiliency of advanced laminated nanocomposite materials to mitigate impact load is an essential characteristic for material selection and product design. This paper investigates the effect of nanofillers and its effect on the damage resistance performance of a newly developed woven Kevlar fabric. Three types of nanofillers were investigated: (1) Silicon carbide (SiC), (2) aluminum oxide (Al2O3), and (3) multiwalled carbon nanotube (MWCNT). The nanofillers were dispersed using shear mixing and sonication into the epoxy to reinforce Kevlar fabric. Moreover, the effect of the nanofiller's concentration on the damage resistance performance was analyzed. All specimens had 10 layers of Kevlar fabric (KM2plus) stacked with a 0° angle. To evaluate the damage resistance performance a drop-weight impact test was conducted using a maximum drop height of 100 cm. X-ray diffraction was used to evaluate… Details
7/1/2019
Ugur Kilic, Muhammad M. Sherif* & Osman E.Ozbulut

This study investigates the tensile behavior of ductile and brittle epoxy polymers reinforced by graphene nanoplatelets (GNPs) dispersed by various methodologies. Dispersion of GNPs into the epoxy matrix using sonication or sonication in combination with high shear mixing was investigated. Also, the effectiveness of the dispersion of GNPs into epoxy resin or hardener was assessed. Then, the effect of GNP concentration on the tensile properties of GNP/epoxy composites fabricated by three selected dispersion techniques was explored. A large number of specimens were tested under uniaxial tensile loading and the results were analyzed in terms of tensile strength, fracture elongation, and tensile modulus. Finally, scanning electron microscopy imaging was used to assess the fractured surface of the selected specimens. Results indicate that the addition of GNPs into brittle epoxy does not provide significant improvements in tensile properties.… Details
10/1/2018
Muhammad M. Sherif*, Evelina M. Khakimova, Jonathon Tanks & Osman E. Ozbulut

Superelastic shape memory alloys (SMAs) are smart materials that can recover 6–8% elastic strains due to their phase transformation. SMAs also possess unique characteristics such as good energy dissipation, excellent re-centering capabilities and corrosion resistance. Recent studies have incorporated the use of superelastic SMA fibers in cementitious composites to achieve re-centering and crack-closing capabilities. Consequently, it is important to investigate the performance of fiber reinforced concrete (FRC) members under cyclic loading. This study investigates the use of hybrid steel/SMA fibers as reinforcement in concrete members subjected to cyclic flexural loading. Digital image correlation (DIC) was used to monitor the full field displacements and strains of the concrete beam specimens. Fiber density and statistical spatial point pattern functions were used to assess the fiber distribution. Two acoustic… Details
11/27/2017
Muhammad M. Sherif* & Osman E. Ozbulut

This paper discusses the tensile response and functional fatigue characteristics of a NiTi shape memory alloy (SMA) cable with an outer diameter of 5.5 mm. The cable composed of multiple strands arranged as one inner core and two outer layers. The results of the tensile tests revealed that the SMA cable exhibits good superelastic behavior up to 10% strain. Fatigue characteristics were investigated under strain amplitudes ranging from 3% to 7% and a minimum of 2500 loading cycles. The evolutions of maximum tensile stress, residual strains, energy dissipation, and equivalent viscous damping under a number of loading cycles were analyzed. The fracture surface of a specimen subjected to 5000 loading cycles and 7% strain was discussed. Functional fatigue test results indicated a very high superelastic fatigue life cycle for the tested NiTi SMA cable. Details
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