Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 225-228 |
| Number of pages | 4 |
| Journal | Key Engineering Materials |
| Volume | 577-578 |
| DOIs | |
| Publication status | Published - 2014 |
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The competition between adhesive and cohesive fracture at a micro-patterned polymer-metal interface. / Sluis, van der, O.; Remmers, J.J.C.; Thurlings, M.A.C.; Welling, B.J.; Noijen, S.P.M.
In: Key Engineering Materials, Vol. 577-578, 2014, p. 225-228.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - The competition between adhesive and cohesive fracture at a micro-patterned polymer-metal interface
AU - Sluis, van der, O.
AU - Remmers, J.J.C.
AU - Thurlings, M.A.C.
AU - Welling, B.J.
AU - Noijen, S.P.M.
PY - 2014
Y1 - 2014
N2 - It is common practice for polymer-metal interfaces, frequently encountered in microelectronic devices, to improve adhesion by surface roughening or micro-patterning. The competition between adhesive fracture and cohesive fracture in the vicinity of a patterned interface, i.e., interface crack deflection, is one of these key mechanisms that contribute significantly to the macroscopic adhesion. In this paper, these fracture phenomena are described simultaneously by cohesive zone elements with an exponential traction-separation law (TSL) for the adhesive failure and an initially rigid, exponentially decaying, TSL for the cohesive failure. It is demonstrated that the conditions at which crack kinking occurs are dominated by fracture strength values as opposed to the commonly used fracture toughness values. Experimental verification is performed by means of four point bending tests on specifically designed micro-patterned polymer-metal samples.
AB - It is common practice for polymer-metal interfaces, frequently encountered in microelectronic devices, to improve adhesion by surface roughening or micro-patterning. The competition between adhesive fracture and cohesive fracture in the vicinity of a patterned interface, i.e., interface crack deflection, is one of these key mechanisms that contribute significantly to the macroscopic adhesion. In this paper, these fracture phenomena are described simultaneously by cohesive zone elements with an exponential traction-separation law (TSL) for the adhesive failure and an initially rigid, exponentially decaying, TSL for the cohesive failure. It is demonstrated that the conditions at which crack kinking occurs are dominated by fracture strength values as opposed to the commonly used fracture toughness values. Experimental verification is performed by means of four point bending tests on specifically designed micro-patterned polymer-metal samples.
U2 - 10.4028/www.scientific.net/KEM.577-578.225
DO - 10.4028/www.scientific.net/KEM.577-578.225
M3 - Article
VL - 577-578
SP - 225
EP - 228
JO - Key Engineering Materials
JF - Key Engineering Materials
SN - 1013-9826
ER -