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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/3497

Title: Application and modelling of hybrid stereolithography injection mould tooling
Authors: Attanasio, Daniel C.
Hopkinson, Neil
Kehrberger, Ralf
Sridhar, Ashok
Witt, Gerd
Keywords: Hybrid tooling
Stereolithography tooling
Injection moulding
3D mould simulation
Issue Date: 2006
Publisher: © Taylor & Francis
Citation: ATTANASIO, D.C. ... et al, 2006. Application and modelling of hybrid stereolithography injection mould tooling. Virtual and physical prototyping, 1(3), pp 197-206 [DOI: 10.1080/17452750600924614]
Abstract: The use of stereolithography (SL) to make injection moulding tools has been shown previously to be an efficient way of producing rapid tools for simple geometries, aiming at small lot sizes with an acceptable degree of accuracy. This paper highlights the unexplored potential of using SL inserts in hybrid tools using practical experiments and FEA mould filling models. The practical experiments reveal problems incurred by uneven flow as a result of differential thermal conductivity between dissimilar mould materials in a hybrid tool. The FEA flow models confirm that this uneven flow would be anticipated when using FEA software. A further FEA stress analysis predicts that catastrophic mould failure will be expected under some conditions and these reflect the results found in the practical experiments. The use of a homogeneous SL tool eliminates the issues caused by uneven mould filling but results in thermal distortion of the female mould. Ultimately a SL tool backfilled with low melt point alloy provides a solution that eliminates the problems of uneven filling and thermal distortion.
Description: This is a journal article. It was published in the journal, Virtual and physical prototyping [© Taylor & Francis]. The definitive version is available at: http://www.tandf.co.uk/journals/titles/17452759.asp
URI: https://dspace.lboro.ac.uk/2134/3497
ISSN: 1745-2767
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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