Testing for homogeneity and orthotropy of Ti6Al4V (ELI) parts built by Direct Metal Laser Sintering

Published Conference ProceedingsDesign of medical prostheses is typically based on the mechanical properties of the materials used. However, apart from non-loadbearing implants, medical prostheses in use are exposed to various forms of dynamic loading. Therefore, to eventually deliver qualified medical prostheses produced through additive manufacturing (AM), it is necessary to develop a data bank on both their static and dynamic properties. This is done here with reference to the fatigue properties of Direct Metal Laser Sintering (DMLS) of Ti6Al4V (ELI) parts, produced at the Centre for Rapid Prototyping and Manufacturing (CRPM) of the Central University of Technology. In recognition of the effect of microstructure on the mechanical properties of materials, post process heat treatment of Ti6Al4V (ELI) will also be done to produce prostheses with high fatigue strength

HIGH CYCLE FATIGUE PROPERTIES OF AS-BUILT TI6AL4V (ELI) PRODUCED BY DIRECT METAL LASER SINTERING

Published ArticleThe high cycle fatigue (HCF) properties of direct metal laser sintering (DMLS) of Ti6Al4V (ELI) in three mutually orthogonal build directions were investigated by cycling specimens under load control, in a tension-tension fatigue testing machine. Semi-log graphs of maximum stress (S) against life (N) of the specimens produced along the respective three build directions were plotted, and the displayed endurance limits compared. Optical and scanning electron microscopy were used to compare and analyse the crack initiation and propagation characteristics of the specimens. The influence of the build direction on the fatigue properties of the tested specimens is discussed here

Determinants of income inequality in South Africa

Time series data used in the empirical analysis covering the period 1975 to 2017

Botswana trade openness and economic growth data

Trade openness indicators [trade to GDP ratio OPEN1; exports to GDP (OPEN 2); imports to GDP (OPEN 3); composite index of openness (OPEN 4), which is constructed from residuals of OPEN1 = f(GDP per capita growth, pop1564; arable area]; economic growth (GDP per capita growth); investment to gdp ratio; government consumption expenditure to GDP ratio ; financial development (M2/GDP ratio); inflation rate; population aged 15 - 64; ratio of arable area to total land area

Convergence in SACU countries_Dataset

The main research hypothesis is that there is income convergence in economically integrated countries such as those of the Southern African Customs Union (SACU). This dataset can be used to test for both unconditional and conditional beta convergence. The data shows that there is no unconditional convergence in SACU countries during the period 2002-2018 since the coefficient of the initial income was found to be insignificant. However, when additional variables including the inflation rate, trade openness, investment, and government expenditure are taken into account, then there is evidence of conditional convergence in SACU countries. Unless otherwise specified, all data was obtained from the World Bank - World Development Indicators (2019) and (2015) in some cases

Testing diminishing returns to export-led growth in South Africa and Botswana

Data used in the empirical analysis to test the diminishing returns to the export-led growth hypothesis in South Africa and BotswanaTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Convergence in SACU countries_Dataset

The main research hypothesis is that there is income convergence in economically integrated countries such as those of the Southern African Customs Union (SACU). This dataset can be used to test for both unconditional and conditional beta convergence. The data shows that there is no unconditional convergence in SACU countries during the period 2002-2018 since the coefficient of the initial income was found to be insignificant. However, when additional variables including the inflation rate, trade openness, investment, and government expenditure are taken into account, then there is evidence of conditional convergence in SACU countries. Unless otherwise specified, all data was obtained from the World Bank - World Development Indicators (2019) and (2015) in some cases

Botswana trade openness and economic growth data

Trade openness indicators [trade to GDP ratio OPEN1; exports to GDP (OPEN 2); imports to GDP (OPEN 3); composite index of openness (OPEN 4), which is constructed from residuals of OPEN1 = f(GDP per capita growth, pop1564; arable area]; economic growth (GDP per capita growth); investment to gdp ratio; government consumption expenditure to GDP ratio ; financial development (M2/GDP ratio); inflation rate; population aged 15 - 64; ratio of arable area to total land area

Income inequality in South Africa_dataset

Data associated with an empirical investigation of income inequality in South AfricaTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Southern African Customs Union_Selected indicators for 2022

Data including selected indicators, namely: - Expenditure-side real GDP at PPPs, to compare relative living standards across countries and over time (mil. 2017 US$).-Output-side real GDP at PPPs, to compare relative productive capacity across countries and over time (mil. 2017 US$).-Population in millions-Number of persons engaged in employment.-Index of human capital per person, based on years of schooling and returns to education.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV