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Browsing Research and Innovation Unit by Author "Maringa, Maina"

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Crystallographic Texture Analysis of As-Built and Heat-Treated Ti6Al4V (ELI) Produced by Direct Metal Laser Sintering

Muiruri, Amos; Maringa, Maina; Du Preez, Willie (Crystals 2020, 10, 699, 2020-08-12)

This paper reports on an investigation of crystallographic texture of as-built and heat-treated Ti6Al4V (ELI) produced by direct metal laser sintering (DMLS). The texture analyses were conducted using electron backscatter ...
Effect of Stress-Relieving Heat Treatment on the High Strain Rate Dynamic Compressive Properties of Additively Manufactured Ti6Al4V (ELI)

Muiruri, Amos; Maringa, Maina; Du Preez, Willie; Masu, Leonard (Metals 2020, 10, 653, 2020-05-18)

A study was undertaken on the compressive high strain rate properties and deformation behaviour of Direct Metal Laser-Sintered (DMLS) Ti6Al4V (ELI) parts in two separate forms: as-built (AB) and stress relieved (SR). The ...
Effects of Stress-Relieving Heat Treatment on Impact Toughness of Direct Metal Laser Sintering (DMLS)-Produced Ti6Al4V (ELI) Parts

Muiruri, Amos; Maringa, Maina; Du Preez, Willie; Masu, Leonard (The Journal of The Minerals, Metals & Materials Society, 2019-10-21)

The impact toughness of as-built (AB) and stressed-relieved (SR) direct metal laser sintering-produced Ti6Al4V (ELI) was investigated using the standard Charpy impact test over the temperature range of 130 C to 250 C. ...
Evaluation of Dislocation Densities in Various Microstructures of Additively Manufactured Ti6Al4V (Eli) by the Method of X-ray Diffraction

Muiruri, Amos; Maringa, Maina; Du Preez, Willie (Materials 2020, 13, 5355, 2020-11-26)

Dislocations play a central role in determining strength and flow properties of metals and alloys. Di usionless phase transformation of ! in Ti6Al4V during the Direct Metal Laser Sintering (DMLS) process produces ...
Mixing And Reuse Of Polymer Laser Sintering Powders To Ensure Homogeneity - A Review

Mwania, Fredrick; Maringa, Maina (International Journal of Engineering Research and Technology Volume 13, Number 11 (2020), pp. 3335-3341, 2020-12)

Selective laser sintering is one of the most common additive manufacturing technologies for polymeric materials. However, the technique is limited due to the high cost of the few available feedstock materials. Besides, ...
Powder Characterization for a New Selective Laser Sintering Polypropylene Material (Laser PP CP 60) after Single Print Cycle Degradation

Mwania, Fredrick, M.; Maringa, Maina; Van der Walt, Kobus (International Journal of Engineering Research and Technology Volume 13, Number 11 (2020), pp. 3342-3358, 2020)

Experiments were conducted to characterise a new polymeric powder (Laser PP CP 60) from Diamond Plastics GmbH used in selective laser sintering (SLS) additive manufacturing (AM). Three different batches of the powder were ...
A Review of Methods Used to Reduce the Effects of High Temperature Associated with Polyamide 12 and Polypropylene Laser Sintering

Mwania, Fredrick M.; Maringa, Maina; Van der Walt, Kobus (Advances in Polymer Technology Volume 2020, 2020)

The polymer laser sintering (PLS) process is one of the most promising additive manufacturing (AM) technologies for polymeric materials. However, the technique has challenges because the physical, mechanical, and chemical ...
A Review Of The State Of Research And Utilization Of Biomaterials In The Manufacture Of Composite Materials Todate

Webo, Wilson; Masu, Leonard, M.; Maringa, Maina; Nziu, Patrick, K. (International Journal of Engineering Research and Technology, Volume 13, Number 6 (2020), pp. 1065-1075, 2020)

Over the last four decades composite materials, plastics and ceramics have been the dominant emerging materials. The volume and number of applications of composite materials has grown steadily, penetrating and gaining ...
The Tensile and Flexural Properties of Treated and Untreated Sisal Fibre-Epoxy Resin Composites

Webo, Wilson; Maringa, Maina; Masu, Leonard (International Journal of Mechanical & Mechatronics Engineering, 2019-12)

The influence of chemical treatment of sisal fibres through the subsequent processes of mercerisation (alkali treatment), then silane treatment and eventually acid hydrolysis on the fibres were investigated. The effect of ...

Browsing Research and Innovation Unit by Author "Maringa, Maina"

Browsing Research and Innovation Unit by Author "Maringa, Maina"

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