Advanced miniature mixed mode bending setup for in situ interface delamination characterization

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Abstract

A novel test frame configuration was developed and employed to design a new miniature mixed mode bending (MMMB) setup for in-situ characterization of interface delamination in miniature multi-layer structures to accomplish full range of mode mixities. This advanced setup is specially designed with sufficiently small dimensions to fit in a scanning electron microscope and under an optical microscope for detailed real-time fracture analysis during delamination. Analysis of the loads in the new test configuration was performed and a special loading configuration was identified which replicates pure mode II loading better than the conventional end notch flexture (ENF) test. Special care was taken to minimize non-linearities, such as friction, the influence of gravity and geometrical non-linearities. Finite element simulation of the designed setup were performed to show its ability to access all loading modes. Preliminary delamination tests conducted on homogeneous bilayer samples under scanning electron microscope (SEM) proved the new setup configuration is capable of measuring the crack length, crack opening profile and crack delamination mechanism in addition to the conventional energy release rate measurements.

Original languageEnglish
Title of host publicationEuroSimE 2008 - International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Micro-Systems
EditorsL.J. Ernst
Place of PublicationFreiburg
Pages1-5
DOIs
Publication statusPublished - 18 Aug 2008
EventEuroSimE 2008 - International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Micro-Systems - Freiburg im Breisgau, Germany
Duration: 20 Apr 200823 Apr 2008

Conference

ConferenceEuroSimE 2008 - International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Micro-Systems
CountryGermany
CityFreiburg im Breisgau
Period20/04/0823/04/08

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Kolluri, M., Thissen, M. H. L., Hoefnagels, J. P. M., Dommelen, van, J. A. W., & Geers, M. G. D. (2008). Advanced miniature mixed mode bending setup for in situ interface delamination characterization. In L. J. Ernst (Ed.), EuroSimE 2008 - International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Micro-Systems (pp. 1-5). [4525090] Freiburg. https://doi.org/10.1109/ESIME.2008.4525090