1. PERFORMANCE EVALUATION OF DIFFERENT MATERIALS AS CHILLS IN SAND CASTING OF ALUMINIUM ALLOY
ABSTRACT
This study has evaluated the effectiveness of metallic materials as chill in sand casting of aluminium alloy. Four plates of dimension 165mm x 80mm x10mm were cast using sand mould. Steel, copper and brass chills in form of cylindrical bar of g...
2. EFFECTS OF FIBRE HYBRIDIZATION ON THE PROPERTIES OF NATURAL FIBRE FILLED EPOXY COMPOSITES
ABSTRACT
The problems of low mechanical properties of composites reinforced with fibres of natural origin have been a source of concern for researchers. Also, the insufficient utilization of bagasse fibres due to its moderate strength has further reduced its potentialities in composite...
3. INFLUENCE OF TIG PROCESS PARAMETERS ON HARDNESS, TENSILE STRENGTH AND MICROSTRUCTURES OF AISI430 FERRITIC STAINLESS STEEL WELDS
ABSTRACT
The influence of tungsten inert gas (TIG) welding process parameters on the microstructural features and mechanical properties (hardness and tensile strength) of AISI430 ferritic stainless steel (FSS) weldsbased on the central composite design (CCD) approach, was investigated....
4. PERFORMANCE EVALUATION OF DIFFERENT MATERIALS AS CHILLS IN SAND CASTING OF ALUMINIUM ALLOY
ABSTRACT
This study has evaluated the effectiveness of metallic materials as chill in sand casting of aluminium alloy. Four plates of dimension 165mm x 80mm x10mm were cast using sand mould. Steel, copper and brass chills in form of cylindrical bar of geometry 7mm in diameter and 50mm l...
5. SUITABILITY OF SNAIL SHELL PARTICLES AS AN ENERGIZER FOR CARBURIZING MILD STEEL
ABSTRACT
The suitability of hardwood charcoal and snail shell particles for carburizing mild steel was investigated. All the mild steel specimens were carburized at constant temperature of 920°C from one (1) to five (5) hours at intervals of one hour. The mild steel specimen in the...
6. Predicting High Stress Regions in a Microstructure using Convolutional Neural Networks
Abstract
Origins of failure are often driven by localizations in material response due to the applied stress/strain state. These stress “hot spots” intuitively represent regions that accumulate higher damage than their surroundings, serving as prime locations for crack nucle...
7. ORIGAMI AND TENSEGRITY: STRUCTURES AND METAMATERIALS
ABSTRACT
In recent years, the call for multi-functional structural systems has increased substantially, with potential applications across scales: from deployable outer space structures [1], [2], to transformable multi-role robots [3], [4], and to microstructures of metamaterials [5]&nd...
8. PREPARATION AND CHARACTERISATION OF PLANTAIN WASTE BASED CELLULOSIC NANOCOMPOSITES FOR THE REMOVAL OF SELECTED HEAVY METALS FROM BATTERY EFFLUENT
ABSTRACT
In this study, Ag NPs and Ag-CNCs impregnated on CNTs nano adsorbents were developed using a combination of green chemistry protocol and chemical vapor deposition techniques and subsequently characterized using, HRTEM, HRSEM, XRD, EDS and SAED. The adsorption capability of silv...
9. PROPERTIES OF ALKALI-ACTIVATED MILLET HUSK ASH - CALCIUM CARBIDE WASTE BINDER BASED-MORTAR
ABSTRACT
Alkali-activation of agro-industrial wastes as alternative binder to Portland cement (PC) is receiving more consideration most especially in the developed nations due to the issue of green-house gas (CO2) emission from the production process of (PC) and the need to improve the...
10. STUDY OF PHOTOCATALYTIC AND ADSORTIVE BEHAVIOUR OF PURE ZIRCONIUM OXIDE AND CARBON-SULPHUR CO-DOPED ZIRCONIUM OXIDE NANOCOMPOSITES FOR PURIFICATION OF DYE WASTEWATER
ABSTRACT
In this work, ZrO2 nanoparticles were synthesized by green method using Plumeria acuminata leaf extract via the variation of pH. Subsequently, carbon and sulphur were incorporated onto the lattice layer of the prepared ZrO2 nanoparticles by wet impregnation method. The prepared...
11. COMPUTER SIMULATION OF HEAT TREATMENT PROCESS FOR ALUMINIUM ALLOY
ABSTRACT
Temperature of aluminium alloy is simulated using MATLAB programming language for annealing, soaking to have uniformity of microstructure and quenching treatment processes. Workpiece selected for the study was aluminum alloy 6061-O, T1, T4 and T6 of different shapes: plate, cyl...
