Temitope Olumide Olugbade

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• Doctor of Philosophy
• Lecturer at University of Dundee

Magnesium (Mg) alloys are non-toxic, biodegradable, and biocompatible special metallic biomaterials for biomedical applications, but less corrosion-resistant in physiological and chloride-containing environments. This often limits their use as potential biomedical implants due to loss of their mechanical integrity. This can be addressed by adopting...

Aluminium (Al) alloys are known for their high strength and good ductility, making them materials of choice in many aerospace and transport industries. However, they tend to yield to failure in practice as a result of localized corrosion including stress corrosion cracking, exfoliation corrosion, intergranular corrosion, and pitting corrosion. The...

The influence of multilayered polymer coatings on the corrosion and microstructural properties of Al6061-T6 alloy was investigated. The electrochemical properties were determined in chloride solution via corrosion tests and electrochemical impedance spectroscopy (EIS) technique at room temperature. The microstructural properties and corrosion mecha...

Surface modifications can introduce natural gradients or structural hierarchy into human-made microlattices, making them simultaneously strong and tough. Herein, we describe our investigations of the mechanical properties and the underlying mechanisms of additively manufactured nickel–chromium superalloy (IN625) microlattices after surface mechanic...

Achieving ultra-high strength without sacrificing too much ductility is the focus of attention in nanostructured materials. Here, the strengthening mechanism and property enhancement of surface-mechanically treated 17-4PH stainless steel (SS17-4PH) were investigated. Our findings show that a grain refinement and elongated lath-like martensitic grai...

The cold metal transfer-based wire arc additive manufacturing (CMT-based WAAM) technique is one of the novel technologies that utilize the wire-feed additive manufacturing (AM) procedure. In recent years, the utilization of CMT welding techniques for the fabrication of metallic components has attracted lots of research interest among the committee...

Social media is an essential tool for governments to spread political information in the digital era. However, the influence of social media on political participation is significant but not well recognised in developing countries such as Malaysia. The main problem is the lack of clarity surrounding the factors that influence citizen adoption of po...

Efficient amine gas processing reduces carbon dioxide emissions in natural gas streams but often encounters setbacks due to corrosion in its amine gas capturing facilities (AGCF), limiting their functionality. This review provides an overview of AGCF, highlighting the mechanisms of corrosion and offering insights into prevention and mitigation tech...

This research investigates using Polyether ether ketone (PEEK) in dental prosthetics, focusing on enhancing the mechanical properties, adhesion capabilities, and environmental sustainability through AI-driven data analysis and advanced surface treatments. The objectives include improving PEEK’s adhesion to dental types of cement, assessing its bioc...

Waste plastics have become a major threat to the environment and the inhabitants causing both land and water pollution. The incineration of waste plastics for energy generation results in air pollution that is more dangerous than disposing into landfills. Using 3D printing filament produced from recycled polymer materials (i.e., Polyethylene Tereph...

This research aims to optimize piezoelectric implants for orthopedic applications, enhancing energy harvesting efficiency and mechanical integrity. Our objectives include comparing piezoelectric materials (PZT, PVDF, and BaTiO3) and employing advanced theoretical modeling, finite element analysis (FEA), and validation to identify optimal configurat...

This research investigates the environmental sustainability and biomedical applications of shape memory polymers (SMPs), focusing on their integration into 4D printing technologies. The objectives include comparing the carbon footprint, embodied energy, and water consumption of SMPs with traditional materials such as metals and conventional polymer...

Invitation: Special Issue “Advances in Corrosion Behaviors and Protection of Coatings” https://www.mdpi.com/journal/coatings/special_issues/Corro_Behav_Prot_Coat Deadline: 31 January 2025

Titanium alloy is a material of choice when it comes to applications requiring high-performing mechanical properties, lightweight structure, superior biocompatibility, and excellent corrosion resistance properties. In recent times, laser powder bed fusion (L-PBF) has been widely regarded as one of the most frequently studied additive manufacturing...

Invitation: Special Issue "Materials Properties and Engineering for Sustainability" https://www.mdpi.com/journal/sustainability/special_issues/B2V7720YW3 Deadline: 31 December 2023

Most products fabricated from wire arc additive manufacturing (WAAM) have been shown to have the undesirable characteristic of poor surface finish, which has effectively hampered their utilisation for industrial applications. There are some metal additive manufacturing defects (some of which are porosity, cracking, poor surface quality, delaminatio...

Producing durable and efficient solid biofuels should be an important consideration in Nigeria’s present economy due to the numerous advantages associated with it. It offers the benefit of energy generation, particularly in rural areas, and could potentially replace fossil fuels. However, the adoption and production of solid biofuels at commercial...

2022 JMEP Editor's Choice Article - "Corrosion, Corrosion Fatigue, and Protection of Magnesium Alloys: Mechanisms, Measurements, and Mitigation", Journal of Materials Engineering and Performance, Springer

Aluminium alloys are materials of choice for structural applications with remarkable mechanical and corrosion properties but prone to premature failure under the combined action of stress and corrosive environment. Over the years, several efforts including surface modifications and thermomechanical treatments have been made to address this shortcom...

To enhance the products fabricated from wire arc additive manufacturing (WAAM) processes, it is very important to implement a critical assessment of the corrosion performance of additively manufactured stainless steel for the application of additive manufacturing (AM) parts widely used in industries. The common defects in metal additive manufacturi...

The surface analysis of the passivation film formed on surface-deformed AISI 304 stainless steel was carried out in the present study, and its corrosion properties were also determined. The morphology of the surface layer and the phase identification before and after surface modification were examined via scanning electron microscope (SEM) and X-ra...

The present paper reviews the concept of wire arc additive manufacturing (WAAM), its associated defects, and the existing post-processing methods for product quality enhancement. The application of friction stir processing (a surface modification technique) for enhancing the microstructure and mechanical properties of wire arc additively manufactur...

The electrochemical properties of the passive film formed on surface-modified 301 stainless steel (SS) were examined in the present study. After surface treatment, the passive film analysis was carried out via X-ray photoelectron spectroscopy (XPS) technique, while the surface microstructure of the samples was examined by scanning electron microsco...

The production of nanocellulose from cellulose-based biomaterials has increased research in nanotechnology due to their biocompatibility, biodegradability, renewability, and low toxicity. The physicochemical properties of nanocellulose produced from waste biomass have broad environmental, geotechnical, food packaging, and biomedical engineering app...

Additive manufacturing (AM) is the opposite of conventional manufacturing technologies, creating an opportunity to fabricate parts using a layer upon layer approach to obtain 3D patterns. AM technology has provided an opportunity for biomaterials usage in the bio-fabrication of organs and scaffolds for tissues engineering. In recent times, AM has b...

The physicomechanical properties of bio-based sawdust-cow horn-coconut husk particleboards were determined in the present study. The particleboards were first produced using urea formaldehyde as a binder and thereafter characterized in terms of water absorption, thickness swelling, modulus of rupture (MOR), and modulus of elasticity (MOE). The thic...

Wire arc additive manufacturing (WAAM) is suitable for printing medium-to-large complex parts with structural integrity while reducing material wastage, and lead time, improving the quality and customized design for functional components. Aluminium alloys are one of the most commonly used metallic materials in manufacturing parts for aerospace and...

Surface nanocrystallization provides the opportunity to produce gradient-structured metallic materials with improved properties. Several attempts have been made to produce nanostructured stainless steel (SS), along with the study of the resultant corrosion resistance. However, the current knowledge is insufficient to address the corrosion mechanism...

The present study investigated the effects of heat treatment by low-temperature annealing and temperature change on the electrochemical properties of aluminium (Al) alloy A6061-T6 in 0.5 M sulphuric acid (H2SO4) solution. Subsequent to heat treatment at five different temperatures of 250 °C, 300 °C, 350 °C, 400 °C, and 500 °C (constant time of 1 h....

The influence of chloride concentration on the corrosion behaviour of SS17-4PH after surface treatment by mechanical deformation was investigated in 0.6–1 M concentration of NaCl aqueous solution through polarization study and morphology observation. The potentiodynamic polarization results revealed that the corrosion resistance of SS17-4PH decreas...

Stainless steels are widely recognized and find applications in many engineering industries and companies due to their excellent properties including high resistance to corrosion as a result of their minimum 10.5% chromium content, exceptional strength and durability, temperature resistance, high recyclability, and easy formability. In the present...

The corrosion rate of surface-conditioned 301 and 304 stainless steels (SS) was determined by salt spray test in a controlled accelerated corrosive medium (9.5 L of pure distilled water + 500 g NaCl). Surface conditioning via mechanical attrition treatment was firstly carried out before the salt spray test. The corrosion rate was determined by weig...

Materials are often exposed to simultaneous actions of corrosive environment and repeated stress, which sometimes leads to a significant decrease in corrosion fatigue strength. Several attempts have been made in the past to investigate the fatigue cracks initiation and propagation process across different materials. However, the current knowledge i...

Indiscriminate disposal of beverage cans as waste poses a great threat to the environment, causing flooding, landfill, and blockage of drainages, leading to land pollution and sometimes accident. Hence, there is a need to design a system capable of converting these wastes into usable products. In this study, a simulation-based analytical design for...

Torrefaction of biomass materials has received a tremendous attention over the years due to its ability to produce a high-grade solid biofuel with enhanced durability, excellent grindability, higher bulk density and calorific value, and greater energy density, as compared to the original untreated biomass material. It is a mild pyrolysis treatment...

Biomass torrefaction is capable of significantly improving the quality and properties of solid biofuels. It is often referred to as complex reactions involving the decomposition of lignin, cellulose, and hemicellulose as well as moisture evaporation due to several reactions involved. To evaluate the efficiency of the torrefaction process as well as...

Twinning-induced plasticity (TWIP) steels are increasingly receiving wide attention for automotive applications due to their outstanding combination of ductility and strength, which can largely be attributed to the strain hardening effect, formation of mechanical twins during straining, and the presence of manganese (Mn) as an alloying element. How...

Steels are majorly used for diverse structural applications; however, they suffer severe degradation in a corrosive environment which necessitates the need for a protective surface coating. In this paper, the electrochemical study of MgZnCa alloy thin film coating on an AISI 304 stainless steel was reported. The study intends to investigate the inf...

Upgrading the corrosion properties of metallic materials has been the dream of many corrosion experts and material scientists. The present study investigated the influence of mechanical deformation by rolling process on the corrosion behavior of mild steel through an electrochemical process in a chloride-containing environment at room temperature....

The present study investigated the corrosion behaviour of mechanically surface-treated 301 stainless steel (SS) in 0.6 M NaCl aqueous solution through electrochemical tests. The surface microstructure characterized by X-Ray diffraction (XRD) and scanning electron microscope (SEM) revealed the formation of a nanostructured layer on the surface of 30...

Briquetting process offers unique advantages such as uniformity in briquette size and shape, easy storage and transportation, thanks to the influence of binders which ensures good bonding and combustion performance. Recently, much has been discussed about the briquettes-binders system and the influence of binders on the resulting physical and combu...

Most of the challenges experienced by many engineering materials originate from the surface which later leads to total failure, hence affecting the resultant mechanical properties and service life. However, these challenges have been addressed thanks to the invention of a novel surface mechanical attrition treatment (SMAT) method which protects the...

In this study, perforated cannulated magnesium (Mg) hip stents were fabricated via modified Mg injection molding and conventional machining, respectively. Additionally, the stent canal was filled with paraffin to simulate injection of biomaterials. The microstructure, mechanical performance, corrosion behavior, and biocompatibility were comparably...

Purpose The purpose of this study is to determine the effects of post-annealing and post-tempering processes on the microstructure, mechanical properties and corrosion resistance of the AISI 304 stainless steel gas metal arc weldment. Design/methodology/approach Gas metal arc welding of AISI 304 stainless steel was carried out at an optimized proc...

Keywords: Metal injection molding machining biodegradable pure magnesium osteonecrosis of femoral head a b s t r a c t In this study, perforated cannulated magnesium (Mg) hip stents were fabricated via modified Mg injection molding and conventional machining, respectively. Additionally, the stent canal was filled with paraffin to simulate injection...

Briquettes are widely used as a renewable energy material for solving the problem of dependency and over-consumption of wood fuel as a source of energy for human use. However, their performance depends on the types and nature of binders used during the preparation and densification process. Most of the performance-related problems such as low yield...

AISI 301 stainless steel (SS) is known for its high strength and hardness but tends to be less corrosion resistant for many applications. Several attempts have been made in the past to investigate its corrosion behavior by different methods. However, current knowledge is insufficient on its corrosion resistance when subjected to surface treatment....

The corrosion properties of nanostructured 17-4PH stainless steel facilitated by a surface mechanical attrition treatment (SMAT) process were studied using electrochemical measurements in 0.6 M NaCl aqueous solution. The microstructure of the surface layer was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The resu...

The present paper contains the experimental datasets on the corrosion behaviour of nanostructured AISI 316 stainless steel (SS) through polarization tests in 0.6 M NaCl aqueous solution at room temperature. The nanostructured layers were first obtained through surface mechanical attrition treatment (SMAT) method and the data information on the corr...

Surface modification through surface mechanical attrition treatment (SMAT) process and annealing were employed to enhance the corrosion properties of 316 stainless steel (SS) in 0.6 M NaCl. SMAT resulted in the formation of a nanocrystalline layer on 316 SS with an average grain size of 20 nm at the depth of about 30 µm from the treated surface. Th...

The static stress analysis and displacement of a tricycle rear shock absorber using finite element analysis (FEA) were carried out. The design of spring in the suspension system was also studied. A physical model (pressure model and flow model) was adopted and implemented for the modelling of the tricycle shock absorber. The pressure model determin...

The development of an improved electric baking oven was carried out and its performance was evaluated to determine its effectiveness and functionality. A thermostat and interlock switch were incorporated to improve on the already existing oven. Compared with the existing ones, the improved electric baking oven is efficient, faster, and thus baked e...

Material-related failures such as fatigue, crack, wear and corrosion mostly occur on the surface, and they damage the structure and affect the properties of the materials. Hence, enhancing the surface properties by various surface modification techniques is necessary to protect the material surface as well improve their microstructural and mechanic...

The TiSiN/Ag multilayer coatings with fixed TiSiN layer thickness and different individual Ag layer thicknesses were prepared by arc ion plating. Quantification of mechanical response of TiSiN/Ag multilayer coatings through uniaxial micropillar compression tests was carried out to identify the elastic modulus, fracture strength, deformation and fai...

An adjustable multi nut tighter or remover for car tyre (with 114.3 PCD) was developed. The need to loosen and tighten car wheel nuts with little application of force (torque) and time spent is of great importance to most car users. Operation with the existing common instruments like ratchet, socket and impact wrench is quite tedious and time consu...

The effect of the gas metal arc and laser welding process parameters on the geometry, microstructure and mechanical properties of the dissimilar weldments of different materials systems were reviewed. Gas metal arc welding (GMAW) and laser welding processes are widely used for permanent joining dissimilar metals and alloys. The significant paramete...

There is no denying the fact that the proliferation of telecommunication industry has contributed to improving the economy of Nigeria. However, always accompanying such proliferation is waste generation, which may be dangerous to the environment. Therefore, this paper reviewed the trend of cell-phone waste generation and its environmental impact in...

There is no denying the fact that the proliferation of telecommunication industry has contributed to improving the economy of Nigeria. However, always accompanying such proliferation is waste generation, which may be dangerous to the environment. Therefore, this paper reviewed the trend of cell-phone waste generation and its environmental impact in...

Aims: This paper determined the effect of oil exploration on engineering infrastructures in Niger Delta area of Nigeria where oil explorations are commonly practiced. Study Design: Treatment of legal measure for the protection of the three environmental media: air, land, and water. Place and Duration of Study: Department of Mechanical Engineering...

Aims: This work is aimed at analysing the effect of different palm kernel particle sizes on the calorific value of the briquettes produced using this material. Study Design: The palm kernel shell used was obtained from the local market, after which it was taken to the grinder so as to get it into powdered form of different sizes. The powered palm k...

Aims: The paper developed a strategy that apply the house of quality (HOQ) matrix for selecting appropriate engineering materials for use in engineering designs. The HOQ matrix provides a means for translating customer needs into appropriate technical requirements for effective product planning. Study Design: Development of strategy for material se...

Aims: The paper developed an accessory that can be connected to the hydraulic jack to operate it by pedaling while standing upright at a convenient position. It is characterized by an adjustable rectangular frame that occupies less floor space, and wheels to facilitate easy positioning. Study Design: Thorough design analysis of the member compo...

A b s t r a c t Burning rate determines the rate at which a certain mass of fuel is combusted in air. This study was conducted to investigate the effect of compaction pressure, binder proportion and particle size on the burning rate of fuel briquettes produced from a mixture of rice bran and palm kernel shell. This study involved three particle siz...

A b s t r a c t Fuel properties are very important in the selection of briquettes for domestic and industrial cottage applications as they go a long way in determining the combustibility and ignitability of the briquettes. In this work, investigations were carried out on properties of briquettes produced from the mixture of rice bran and palm kerne...

Rice bran is a biomass residue that is produced in large quantities in rice-growing regions of Nigeria. Although it is a good source of fuel and its rate of generation is enormous, this essential residue aggregates as waste at rice mills, rice fields, and other processing centers. This causes a disposal problem that leads to environmental pollution...

The unavailability of decent housing is more pronounced in developing countries where rapid rate of population growth and urbanization is unmatched by corresponding and commensurate change in social, economic and technological development. The number of housing units is limited by some factors which include high cost of land, insufficient funds, an...

Biogas refers to a gas produced by breakdown of organic matter in the absence of oxygen. Organic waste such as dead plant and animal material, animal feces and kitchen waste can be converted into a gaseous fuel called biogas. Usually, getting rid of waste places burden of not only cost on organizations, communities, government among others but also...

Queuing analysis is to offer a reasonably satisfactory service to waiting customers. It is not an optimization technique. It determines the measures of performance of waiting lines such as the average waiting time in queue and the productivity of the service facility; this can be used to design the required service installation. Queuing models vary...