TALAT Lecture 2404: Quality Considerations
This lecture provides understanding of underlying concepts and tools for handling experimental data and its comparison to existing design recommendations; it provides understanding of classification parameters for structural details and quantitative links between design principles and quality criteria; it enables sophisticated design for further structural details not included in current recommendations; it demonstrates methods of enhancing fatigue strength, especially as post-weld treatments. B
TALAT Lecture 2102.03: The Transmission Housing of an Inboard-Outboard Engine, Special Study: Castin
This lecture offers an example of product development. It imparts knowledge about different ways of casting aluminium and criteria for selecting casting methods; the heat treatment of aluminium; corrosion-proofing and surface treatment of cast alloys used in a saline environment and choice of alloy. It provides insight into how to develop a product using the general specificiations and the interaction between form, material and processing chain and ?the importance of being thoroughly familiar wi
TALAT Lecture 2203: Structural materials fabrication
This lecture gives a brief introduction into the basic fabrication methods for structural aluminium alloy materials with respect to machining, forming, joining and surface treatments as a necessary background for the design process; it describes the subject of welding structural aluminium alloys in order to understand the materials requirements which the designer has to take into account when designing load carrying welded aluminium structures. General materials engineering background is assumed
TALAT Lecture 1601: Process modelling applied to age hardening aluminium alloys
This lecture describes the methodology for physical modelling of materials problems, with particular emphasis on heat treatment and welding of age hardening alloys materials; it establishes mathematical relations between different process variables (e.g. alloy composition, heat treatment procedure, welding conditions) and the alloy strength or hardness, based on sound physical principles (e.g. thermodynamics, kinetic theory, dislocation mechanics); it motivates faster process development, optimi
TALAT Lecture 3710: Case Study on Can Making
This lecture gives a background of the design and manufacturing processes of food and beverage cans, which are produced by drawing and drawing & ironing of rolled aluminium alloys. It draws attention to the challenge for materials and production engineers to fulfill contradicting demands and requirements for the production of cans and easy-open lids in a very competitive market. It demonstrates that optimization of all parameters, i.e. design, manufacturing and materials, has resulted in sheet m
TALAT Lecture 2110.01: Automobile brake rotor - LCA in product design
This lecture imparts knowledge about ?production and casting of SiC-particle reinforced aluminium metal matrix composite - PMMC (SiCAl7SiMg); use of Life Cycle Analysis. It provides insight to how to redesign a product using life cycle thinking and LCA to minimize the ecological side effects; the importance of having a thoroughly knowledge about the product's life and its environmental impact. Some knowledge of the concept of the product information structure - "the chromosomes" and f
TALAT Lecture 2102.01: A Floodlight for an Offshore Oil Platform, Special Study: Extruding Aluminium
This lecture offers an example of product development. It imparts knowledge about the design possibilities inherent in aluminium sections and the choice of alloy. It gives insight into how to develop a product using the general specifications and the interaction between form, material and processing chain; the importance of being thoroughly familiar with the different design materials, their processing possibilities and properties. The lecture is recommended for those situations, where a brief,
TALAT Lecture 2101.01: Understanding aluminium as a material
This lecture is an introduction to aluminium alloys, fabrication methods and properties. It provides information about the classification of aluminium alloys, new alloys and composites; shaping processes, processing chains and component shapes; microstructure and the interaction between microstructure and properties. It promotes understanding of the fact that the correct choice of materials demands knowledge of alloys, shaping processes and microstructure and the interaction among them. The lect
Kevlar fibre composite shear surface
This is an image of the shear surface in a failed composite beam. 'Hackles' of matrix are clearly visible where shear has occurred within the matrix and it is also clear that shear has occurred across the fibre/matrix interface. The fibres are for the most part totally unscathed, though some mis-aligned fibres have become caught between the shear surfaces and 'fibrillated' by rolling and bending actions. It may be that this failure mechanism has been partly inhibited by poor fibre alignment sinc
Glass ceramic, heat treated at 900°C for 3 hours
Glass ceramics are materials that are cooled from the melt in the form of a glass, and then heat treated to induce controlled crystallisation of the glass. Heterogeneous nucleation is carried out at a temperature to maximise the nucleation rate (common nucleating agents include TiO2 and ZrO2), and the temperature is then raised sufficiently to cause the nuclei formed to grow rapidly. Glass ceramics are strong, reasonably tough, transparent to IR radiation, have a low coefficient of thermal expan
Carbon-carbon composite
Carbon-carbon composites are manufactured from continuous carbon fibres which are woven in a two or three dimensional pattern. The fibres are then impregnated with a polymeric resin. After the component has been shaped and cured the matrix is pyrolysed by heating in an inert atmosphere. This converts the matrix to carbon chain molecules which are densified by further heat treatments. The resulting composite consists of the original carbon fibres in a carbon matrix. Carbon-carbon composites have
h-BN inclusion in a β-Si3N4 grain
The micrograph shows h-BN inclusion (precipitate) in a β-Si3N4 grain (within a silicon nitride particulate-reinforced silicon carbide composite). The occurrence of BN inclusions results from the introduction of colloidal BN into the hot isostatic pressing process. They are formed from B2O3 present as a thin surface film on the BN particles in the barrier layer. B2O3 will be molten during the pressing process and will diffuse rapidly into the powder compact and react with Si3N4 to form BN. Such
Tensile failure surface of a carbon fibre composite
This is from the region of the fracture surface which was in tension. The fibres show clean, brittle fracture surfaces (with no fibrillation or distortion and little distortion of the matrix) and have broken at varying lengths and hence some stick out while others have left holes in the matrix. This is indicative of fibre pull-out having occurred after an initial failure of the matrix, followed by failure of the fibres themselves. This is a toughening mechanism in fibre reinforced composites. It
Interface boundary between h-BN and Si3N4 grains
The micrograph shows a regularly stepped interface boundary between h-BN (precipitate) and Si3N4 grains (within a silicon nitride particulate-reinforced silicon carbide composite). The occurrence of BN inclusions results from the introduction of colloidal BN into the hot isostatic pressing process. They are formed from B2O3 present as a thin surface film on the BN particles in the barrier layer. B2O3 will be molten during the pressing process and will diffuse rapidly into the powder compact and
Misoriented interphase boundary between h-BN and SiC grains
The micrograph shows misoriented interphase boundary between h-BN (precipitate) and SiC grains (within a silicon nitride particulate-reinforced silicon carbide composite). The occurrence of BN inclusions results from the introduction of colloidal BN into the hot isostatic pressing process. They are formed from B2O3 present as a thin surface film on the BN particles in the barrier layer. B2O3 will be molten during the pressing process and will diffuse rapidly into the powder compact and react wit
Could and should OER replace educators?
In this OER Chris Coetzee introduces and leads the discussion on 'Could and should OER replace educators?' as part of the online open space OTTER Symposium. Discussion includes contributions from Dr Alejandro Armellini, Dr Samuel Nikoi, Dr Richard Mobbs amongst others.
VLE quiz assessment. - VARK related
This quiz is focussed on deriving the preferred learning style of students on a visual effects compositing tool. The VARK learning styles have been mapped to questions within the quiz to help students ascertain their preferred learning style and subsequent learning materials.
Enterprise Education - Leeds Met's Institute for Enterprise CETL, Resource Bank
The Institute for Enterprise is currently undertaking a project to collate and publish all of the educational resources created over the past 5 years related to teaching and embedding enterprise in education. The website provides an extensive number of downloadable resources cateorised into 4 sections: Learning Materials; Publications; AV Resources; and Web Links. Includes interactive toolkits; session plans; video's; posters; presentations; case studies; enterprise projects and exemplars.
TALAT Lecture 1501: Properties, Characteristics and Alloys of Aluminium
This lecture provides a survey of the aluminium alloys available to the user; it describes their various properties; it gives an insight into the choice of aluminium for a proposed application. In the context of this lecture not every individual alloy and its properties have been treated in detail, but rather divided into alloy types with reference to the most commonly used alloys. For further details on alloy properties the reader is referred to available databanks like ALUSELECT of the Europea
TALAT Lecture 2401: Fatigue Behaviour and Analysis
This lecture explains why, when and where fatigue problems may arise and the special significance to aluminium as structural material; it helps to understand the effects of material and loading parameters on fatigue; to appreciate the statistical nature of fatigue and its importance in data analysis, evaluation and use; it shows how to estimate fatigue life under service conditions of time-dependent, variable amplitude loading; how to estimate stresses acting in notches and welds with conceptual
