Non-Fickian moisture uptake characterisation of epoxy-based moulding compounds with thickness effect
The present work focuses on characterising the moisture uptake behaviour in epoxy-based moulding compounds (EMCs) commonly employed in electronics assembly. Available experimental results on selected EMCs with two different thicknesses of 1.4 mm and 3.0 mm and aged at 60°C/85%RH and 85°C/85%RH are c...
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| Format: | Conference or Workshop Item |
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2015
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| _version_ | 1796860701727260672 |
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| author | Wong, K. J. Tamin, M. N. |
| author_facet | Wong, K. J. Tamin, M. N. |
| author_sort | Wong, K. J. |
| collection | ePrints |
| description | The present work focuses on characterising the moisture uptake behaviour in epoxy-based moulding compounds (EMCs) commonly employed in electronics assembly. Available experimental results on selected EMCs with two different thicknesses of 1.4 mm and 3.0 mm and aged at 60°C/85%RH and 85°C/85%RH are considered. Results showed that at different thicknesses, the initial moisture absorption was similar, and deviated after specific ageing period. This non-Fickian observation indicated thickness-dependent behaviour of the EMCs. In this study, a two-phase moisture uptake model with varying thickness consideration is thus adopted to characterise the moisture uptake in the EMCs. The relationships between the non-Fickian parameters and the thickness are correlated and compared. Results show that the maximum moisture content, Mm and non-Fickian initiation time, to increase, whereas the coefficient of the time delay term, α decreases and the power term, β remains constant with thickness. This enables the prediction of moisture uptake behaviour for various thicknesses of the EMCs that could, in turn reduce the time and cost of extensive experiment works. |
| first_indexed | 2024-03-05T19:45:14Z |
| format | Conference or Workshop Item |
| id | utm.eprints-59392 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:45:14Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | utm.eprints-593922021-12-12T07:24:40Z http://eprints.utm.my/59392/ Non-Fickian moisture uptake characterisation of epoxy-based moulding compounds with thickness effect Wong, K. J. Tamin, M. N. TJ Mechanical engineering and machinery The present work focuses on characterising the moisture uptake behaviour in epoxy-based moulding compounds (EMCs) commonly employed in electronics assembly. Available experimental results on selected EMCs with two different thicknesses of 1.4 mm and 3.0 mm and aged at 60°C/85%RH and 85°C/85%RH are considered. Results showed that at different thicknesses, the initial moisture absorption was similar, and deviated after specific ageing period. This non-Fickian observation indicated thickness-dependent behaviour of the EMCs. In this study, a two-phase moisture uptake model with varying thickness consideration is thus adopted to characterise the moisture uptake in the EMCs. The relationships between the non-Fickian parameters and the thickness are correlated and compared. Results show that the maximum moisture content, Mm and non-Fickian initiation time, to increase, whereas the coefficient of the time delay term, α decreases and the power term, β remains constant with thickness. This enables the prediction of moisture uptake behaviour for various thicknesses of the EMCs that could, in turn reduce the time and cost of extensive experiment works. 2015-06-12 Conference or Workshop Item PeerReviewed Wong, K. J. and Tamin, M. N. (2015) Non-Fickian moisture uptake characterisation of epoxy-based moulding compounds with thickness effect. In: 36th IEEE International Electronics Manufacturing Technology Conference, IEMT 2014, 11 November 2014 - 13 November 2014, Johor, Malaysia. http://dx.doi.org/10.1109/IEMT.2014.7123120 |
| spellingShingle | TJ Mechanical engineering and machinery Wong, K. J. Tamin, M. N. Non-Fickian moisture uptake characterisation of epoxy-based moulding compounds with thickness effect |
| title | Non-Fickian moisture uptake characterisation of epoxy-based moulding compounds with thickness effect |
| title_full | Non-Fickian moisture uptake characterisation of epoxy-based moulding compounds with thickness effect |
| title_fullStr | Non-Fickian moisture uptake characterisation of epoxy-based moulding compounds with thickness effect |
| title_full_unstemmed | Non-Fickian moisture uptake characterisation of epoxy-based moulding compounds with thickness effect |
| title_short | Non-Fickian moisture uptake characterisation of epoxy-based moulding compounds with thickness effect |
| title_sort | non fickian moisture uptake characterisation of epoxy based moulding compounds with thickness effect |
| topic | TJ Mechanical engineering and machinery |
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