Now showing items 331-340 of 432
Heat Input Dependence of Weld HAZ Cracking in Aerospace Superalloy Haynes 282
(The Canadian Society for Mechanical Engineering International Congress, 2012)
A study of weld heat affected zone (HAZ) cracking and its dependence on heat input during laser beam welding of a newly developed γ’ precipitation strengthened nickel-base superalloy Haynes 282 (HY 282) was carried out. ...
Determining Thermal Characteristics of an Oil-Fired Crucible Furnace Using Clay and Alumina Bricks
(The Journal of the Association of Professional Engineers of Trinidad and Tobago, 2020)
This paper explores the results of an experimental study that was intended to determine the thermal characteristics of an oil-fired crucible furnace using clay and alumina bricks. For the study, a refractory with 0.03118m3 ...
On preventing HAZ cracking in laser welded DS Rene 80 superalloy
(Institute of Materials, Minerals and Mining, 2011)
The heat affected zone (HAZ) cracking behaviour in a laser beam directionally solidified (DS) Rene 80 nickel based superalloy subjected to preweld heat treatments was studied. The HAZ cracks in the alloy are grain boundary ...
Microstructural analysis of laser weld fusion zone in Haynes 282 superalloy
(Materials Characterization, 2012)
Analytical electron microscopy and spectroscopy analyses of the fusion zone (FZ) microstructure in autogenous laser beam welded Haynes 282 (HY 282) superalloy were performed. The micro-segregation patterns observed in ...
Influence of laser welding heat input on HAZ cracking in newly developed Haynes 282 superalloy
(Institute of Materials, Minerals and Mining, 2012)
A study of the cause of heat affected zone (HAZ) cracking and its dependence on heat input during laser beam welding of a newly developed c9 precipitation strengthened nickel based superalloy Haynes 282 was performed. ...
Tensile Properties of Pre-heated Bitumen Quenched Dual Phase Medium Carbon Steel
(Unilag. Journal of Medicine, science and technology, 2015)
Effect of Land Cover (Clutter) on Field Strength Prediction in urban Areas
(Journal of Engineering Research (JER), University of Lagos, 2009)
This article studies different propagation models in order to determine a suitable one for estimating radio coverage for broadcast services in urban areas. This paper presents three different field strength prediction ...
Development and characterization of collagen‑based electrospun scaffolds containing silver sulphadiazine and Aspalathus linearis extract for potential wound healing applications
(SN Applied Sciences, 2020)
Bone, skin and soft tissue chronic wounds emanating from burns or bacterial infections which persist due to prolonged tissue inflammation contribute to a delay in wound healing. Electrospun biomimetic scaffolds produced ...
Microstructural, mechanical and pozzolanic characteristics of metakaolin-based geopolymer
(Geology, Geophysics and Environment, 2020)
The use of cement contributes to global CO2 emission and this leads to the depletion of ozone layer, causing global warming. The quest to reduce or eliminate this problem has resulted in the discovery of metakaolin-based ...
Comparative effects of organic and inorganic bio-fillers on the hydrophobicity of polylactic acid
(Results in Engineering, 2020)
The use of Polylactic acid (PLA) has been limited in the biomedical field because of its slow degradation profile which is traceable to its degree of hydrophobicity. In this work, 16.67 wt. % of chitosan (Ch), chitin (Ct) ...