Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/91518
Title: Fracture toughness assessment of a solder joint using double cantilever beam specimens
Authors: Lee, Adeline Puay Chen
Lim, Zan Xuan
Yantara, Natalia
Loo, Shane Zhi Yuan
Tee, Tong Yan
Tan, Cher Ming
Chen, Zhong
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Electronic apparatus and materials
DRNTU::Engineering::Materials
Issue Date: 2008
Source: Lee, A. P. C., Lim, Z. X., Yantara, N., Loo, S. Z. Y., Tee, T. Y., Tan, C. M., et al. (2008). Fracture toughness assessment of a solder joint using double cantilever beam specimens. In proceedings of the 10th Electronics Packaging Technology Conference: Singapore, (pp.1066-1073).
Abstract: Conventional assessment of solder joint reliability uses either ball shear test or solder ball pull test. The test results are reported in terms of materials strength in either shear or tensile mode, and the strength values are size-dependent. Therefore these test results are largely useful only for qualitative comparison and qualification of the products. In the current effort, we aim at developing an assessment scheme for solder joint interface fracture toughness. The obtained results, in terms of critical energy release rate, predict the joint failure based on the principle of fracture mechanics. The results can be used as a materials property in the reliability design of various types of solder-ball joined packages. Double cantilever beam (DCB) specimens made of 99.9 wt% copper were selected in the current work. Eutectic Sn-37Pb solder was used to join two pieces of the copper plates with controlled solder thickness. The test record showed steady propagation of the crack along the solder/copper interface, which verifies the viability of such a testing scheme. Interface fracture toughness for as-joined, extensively-reflowed and thermally aged samples has been measured. Both the reflow treatment and the thermal aging lead to degradation of solder joint fracture resistance. To understand the degradation, fractographic analysis by scanning electron microscopy (SEM) has been carried out from both top and cross-sectional views of the fractured surfaces.
URI: https://hdl.handle.net/10356/91518
http://hdl.handle.net/10220/6384
DOI: 10.1109/EPTC.2008.4763571
Rights: © 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. http://www.ieee.org/portal/site This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers

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