A5011339960- Welding Techniques and Residual Stresses
- Energy and Environment Impacts
- Microstructure and Mechanical Properties of Steels
- Advanced Welding Techniques Analysis
- Hybrid Renewable Energy Systems
- Grey System Theory Applications
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Wind and Air Flow Studies
- Forecasting Techniques and Applications
- Metal Alloys Wear and Properties
- Natural Fiber Reinforced Composites
- Hydrogen embrittlement and corrosion behaviors in metals
- Electric Vehicles and Infrastructure
- Masonry and Concrete Structural Analysis
- Energy Load and Power Forecasting
- Energy, Environment, and Transportation Policies
- Hygrothermal properties of building materials
- Integrated Energy Systems Optimization
- Energy, Environment, Economic Growth
University of Douala
2020-2024
University of Benin
2024
University West
2022
Liquefied petroleum gas (LPG) is rapidly becoming a key part of Cameroon's energy mix, with enormous future potential. However, there are still many uncertainties about the extent its potential market, which has so far often led to supply shortages. These shortages therefore constitute major obstacle objective promoting LPG as main fuel in Cameroonian households. Accordingly, short and long-run elasticities consumption Cameroon investigated this work. This work uses annual time series data...
It is crucial to develop highly accurate forecasting techniques for electricity consumption in order monitor and anticipate its evolution. In this work, a novel version of the discrete grey multivariate convolution model (ODGMC(1,N)) proposed. A linear corrective term included conventional GMC(1,N) structure, parameter estimation carried out manner consistent with modelling process, an iterative technique used get cumulated function ODGMC(1,N). As result, capacity ODGMC(1,N) more reliable...
Abstract The effect of thermal cycle on the residual stress, microstructural constituents, and alloying elements composition dissimilar S690QT 316L austenite stainless steel was studied. Finite element model (FEM) using ANSYS 19.1 software an experimental investigation gas metal arc welding (GMAW) process with fully filler wire were applied to developed evaluate stress in heat-affected zone both materials. data recorded a thermal-cycle sensor (TCS) x-ray diffraction technique. A done...
<abstract> <p>This study aims to investigate the optimum heat input required overcome negative consequence of thermal properties austenitic stainless steel produce welded joints free distortion. An experimental investigation using robotic-MAG and fiber-laser welding processes has been used in other angular, longitudinal distortion (bending), microstructural constituents heat-affected zone (HAZ) different joints. Ten 316L steel, butt-joints were made by travel 25 speeds at range...
Grey systems theory can be used to predict the evolution of a system with insufficient information. Unfortunately, most version grey model (GM), namely, GM(1,1), works best when series have an increasing exponential rate. In any other case, GM(1,1) produces inaccurate predictions. this paper, we examine mathematical formulation conventional in order propose new GM that addresses its shortcomings through time response function. Examples are presented demonstrate flexibility and accuracy...
This work simulates the dispersion and atmospheric attenuation of pollutants from Dibamba-Douala thermal power plant. The objective this research is to study air mitigate impact on populations living around methodology used as follows: Gaussian model for representation in form a plume, finite difference method digital resolution. Finally, charts are constructed which allow heights chimneys be fixed concentrations discharged comply with ambient quality standards. results obtained using...
In this study, a mechanical and microstructural constituent of welded joints dissimilar high-strength ultra-high-strength steels (S700MC/S960QC) using overmatched filler wire was evaluated. Three different heat inputs (18 kJ/cm, 8 10 kJ/cm) were applied the GMAW process. Micro-hardness measurement conducted Vickers hardness test, tensile constituents by scanning electron microscopy (SEM) energy-dispersive X-ray spectroscopy (EDS) performed in analysis. A sample with cooling time 51s showed...