5,637 research outputs found
Intelligent conceptual mould layout design system (ICMLDS) : innovation report
No full textFamily Mould Cavity Runner Layout Design (FMCRLD) is the most demanding and
critical task in the early Conceptual Mould Layout Design (CMLD) phase.
Traditional experience-dependent manual FCMRLD workflow results in long design
lead time, non-optimum designs and costs of errors. However, no previous research,
existing commercial software packages or patented technologies can support
FMCRLD automation and optimisation. The nature of FMCRLD is non-repetitive
and generative. The complexity of FMCRLD optimisation involves solving a
complex two-level combinatorial layout design optimisation problem. This research
first developed the Intelligent Conceptual Mould Layout Design System (ICMLDS)
prototype based on the innovative nature-inspired evolutionary FCMRLD approach
for FMCRLD automation and optimisation using Genetic Algorithm (GA) and Shape
Grammar (SG). The ICMLDS prototype has been proven to be a powerful
intelligent design tool as well as an interactive design-training tool that can encourage
and accelerate mould designers’ design alternative exploration, exploitation and
optimisation for better design in less time. This previously unavailable capability
enables the supporting company not only to innovate the existing traditional mould
making business but also to explore new business opportunities in the high-value
low-volume market (such as telecommunication, consumer electronic and medical
devices) of high precision injection moulding parts. On the other hand, the
innovation of this research also provides a deeper insight into the art of evolutionary
design and expands research opportunities in the evolutionary design approach into a
wide variety of new application areas including hot runner layout design, ejector
layout design, cooling layout design and architectural space layout design
Condensation Targeter II: modelling surface relative humidity to predict mould growth in dwellings
No full textCondensation and mould growth are reported as being problems in an estimated 4.2 million dwellings in England, resulting in poor health for the occupants and substantial damage to the fabric of the building. This paper examines the development of an algorithm, Condensation Targeter, to predict the relative humidity of internal surfaces and risk of mould growth in dwellings. The impacts of cold bridging, seasonal variations, variable moisture production and hygroscopic materials are reviewed (but not of interstitial condensation) and a comparison between modelled and measured data for 36 dwellings is carried out. Results indicate that a steady-state model utilizing Bredem-8 to predict internal temperatures and Loudon's condensation model to predict moisture shows good (±10%) agreement with monitored data. A model sensitivity study shows that variations in occupant heating and density can be as important as, or even more important than, ventilation in determining mould
Effect of mould inoculation on formation of chunky graphite in heavy section spheroidal graphite cast iron parts
No full textThe manufacturing process of heavy section ductile iron castings is strongly influenced by the risk of graphite degeneration under slow cooling rates. Appearance of this kind of defect is commonly linked to significant reductions in the mechanical properties of large castings. Studies on the effect of inoculation on chunky graphite formation in heavy sections have led to contradictory results in the literature and this triggered the present work. New experimental data are presented on the effect of mould inoculation on chunky graphite appearance during solidification of nodular irons which clearly demonstrate that mould inoculation increases the risk of chunky graphite formation in heavy sections. This is in agreement with some previous works which are reviewed, and it is suggested that the contradiction with other results could relate to the fact that these latter works dealt with chill casting
Mould and winter indoor relative humidity in low income households in England
No full textThis paper examines the extent to which variation in heating-season, indoor relative humidity (RH) and mould occurrence in English households is explained by dwelling and household characteristics. It is based on analysis of data from a national study of England's Home Energy Efficiency scheme (Warm Front) which provides grants for energy efficiency improvements to vulnerable households. Surveys were undertaken of dwellings and households participating in the scheme in five urban areas. Half-hourly living room and main bedroom temperatures and RH measurements were recorded for two to four weeks in a subset of dwellings (no. = 1604) over the winters of 2001-02 and 2002-03. For each dwelling, regression of indoor vapour pressure excess on outdoor temperature was used to obtain estimates of daily living room and bedroom indoor vapour pressure under standardised conditions (outdoor temperature of 5 degrees C and 80% RH), from which standardised values of indoor relative humidity were derived. We present evidence on the relationship between mould severity and standardised relative humidity, and between both these parameters and household and dwelling characteristics, including Warm Front improvements
Ah! dry your tears their tribute grief appeasing [text varies with each verse] [first line of chorus]
No full textstrophic with choruspiano and voice740Johns Hopkins University, Levy Sheet Music Collection, Box
188, Item 065Rendered into English from the Italian by J. Wrey Mould. Composed by Donizetti.Jenny Lind in the Opera of La Fille Du RegimentLith. of Sarony, New Yor
Where the ever busy restless ocean, showeth depth by a deeper green [first line]
No full textstrophicpiano and voiceJohns Hopkins University, Levy Sheet Music Collection, Box
183, Item 058The Poetry by J. Wrey Mould. The Music by Ahlstrom.Lith. of Sarony & Major, 117 Fulton Street, New Yor
The stars of heav'n are gleaming, above the earth at rest [first line]
No full textstrophicpiano and voiceMusic is duplicated in 188.054.Music is duplicated in 188.055.Johns Hopkins University, Levy Sheet Music Collection, Box
188, Item 052The Poetry by J. Wrey Mould. The Music by Ahlstrom.Jenny LindT. Sinclair's Lith
The stars of heav'n are gleaming, above the earth at rest [first line]
No full textstrophicpiano and voiceMusic is duplicated in 188.054.Music is duplicated in 188.055.Johns Hopkins University, Levy Sheet Music Collection, Box
188, Item 052The Poetry by J. Wrey Mould. The Music by Ahlstrom.Jenny LindT. Sinclair's Lith
Where the ever busy restless ocean, showeth depth by a deeper green [first line]
No full textstrophicpiano and voiceJohns Hopkins University, Levy Sheet Music Collection, Box
183, Item 058The Poetry by J. Wrey Mould. The Music by Ahlstrom.Lith. of Sarony & Major, 117 Fulton Street, New Yor
Ah! dry your tears their tribute grief appeasing [text varies with each verse] [first line of chorus]
No full textstrophic with choruspiano and voice740Johns Hopkins University, Levy Sheet Music Collection, Box
188, Item 065Rendered into English from the Italian by J. Wrey Mould. Composed by Donizetti.Jenny Lind in the Opera of La Fille Du RegimentLith. of Sarony, New Yor
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