Effect of the Mechanical Properties and Geometric Parameters on the Crack Density of the Thin Film/Substrate System under Residual Stress and Uniaxial Tensile Loading

The effect of the mechanical properties and geometric parameters on the crack density of the thin film/substrate system under residual stress and uniaxial tensile loading is investigated in this work. The numerical results show that the crack density of the thin film increases with the increase of t...

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Veröffentlicht in:Applied Mechanics and Materials 2014-01, Vol.470 (Mechanical Engineering, Materials Science and Civil Engineering II), p.521-524
Hauptverfasser: Du, Jun, Chen, Ying, Chen, Hong Qian, Sun, Wei Hai, Pan, Jing Wen, Yang, Ban Quan, Chen, Xue Jun
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Sprache:eng
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Zusammenfassung:The effect of the mechanical properties and geometric parameters on the crack density of the thin film/substrate system under residual stress and uniaxial tensile loading is investigated in this work. The numerical results show that the crack density of the thin film increases with the increase of the Youngs modulus of the thin film and (or) the shear modules of the interface layer, and it decreases with the increase of the thickness of the thin film and (or) the fracture strength of the thin film. These results can help us more deeply understand the fracture behavior of the brittle thin film on the substrate under residual stress and external tensile loading.
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.470.521