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

2013 ◽  
Vol 470 ◽  
pp. 521-524
Author(s):  
Ban Quan Yang ◽  
Jun Du ◽  
Xue Jun Chen ◽  
Wei Hai Sun ◽  
Hong Qian Chen ◽  
...  
Keyword(s):  
Thin Film ◽  
Mechanical Properties ◽  
Residual Stress ◽  
Crack Density ◽  
Tensile Loading ◽  
Interface Layer ◽  
Geometric Parameters ◽  
Uniaxial Tensile ◽  
Uniaxial Tensile Loading ◽  
Film Substrate

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.

Fracture Behavior of a Brittle Thin Film on an Elastic Substrate under Residual Stress and Uniaxial Tensile Loading

2012 ◽  
Vol 190-191 ◽  
pp. 487-490 ◽  
Author(s):  
Ban Quan Yang ◽  
Xue Jun Chen ◽  
Wei Hai Sun ◽  
Hong Qian Chen ◽  
Jing Wen Pan ◽  
...  
Keyword(s):  
Thin Film ◽  
Residual Stress ◽  
Shear Stress ◽  
Fracture Behavior ◽  
Tensile Loading ◽  
Interfacial Shear ◽  
Uniaxial Tensile ◽  
Elastic Substrate ◽  
Uniaxial Tensile Loading ◽  
Film Substrate

The fracture behavior of a brittle thin film on an elastic substrate under residual stress and uniaxial tensile loading is investigated. It is assumed that the residual stress in the thin film is not large enough to cause the thin film to fracture. Using a mechanical model presented in this work, the analytical solutions for the distribution laws of the tensile stress developed in the thin film, the shear stress developed along the interface and the relationship between the crack density of the thin film and the applied strain of the substrate can be obtained. The results presented in this work can provide a new analytic solution to the interfacial shear stress for characterizing the interfacial shear strength of the thin film/substrate system when the uniaxial tensile test is adopted to evaluate the mechanical properties of the thin film/substrate system.

scholarly journals Study on fracture behavior of individual InAs nanowires using an electron-beam-drilled notch

RSC Advances ◽  
2017 ◽  
Vol 7 (27) ◽  
pp. 16655-16661 ◽  
Author(s):  
Suji Choi ◽  
Jong Hoon Lee ◽  
Min Wook Pin ◽  
Dong Won Jang ◽  
Seong-Gu Hong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electron Beam ◽  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Fracture Behavior ◽  
Tensile Loading ◽  
Uniaxial Tensile ◽  
Transmission Electron ◽  
Inas Nanowires ◽  
Uniaxial Tensile Loading

The mechanical properties and fracture behavior of individual InAs nanowires (NWs) were investigated under uniaxial tensile loading in a transmission electron microscope.

In-Situ Cathodoluminescence Spectroscopy of Silicon Oxide Thin Film Under Uniaxial Tensile Loading

2011 ◽  
Vol 11 (4) ◽  
pp. 2861-2866 ◽  
Author(s):  
Takahiro Namazu ◽  
Naoaki Yamashita ◽  
Shigeru Kakinuma ◽  
Kentaro Nishikata ◽  
Nobuyuki Naka ◽  
...  
Keyword(s):  
Thin Film ◽  
Silicon Oxide ◽  
Tensile Loading ◽  
Oxide Thin Film ◽  
Uniaxial Tensile ◽  
Cathodoluminescence Spectroscopy ◽  
Uniaxial Tensile Loading

Effect of the Mechanical Properties and Geometric Parameters on the Crack Density of a Multi-Layered Thin Film Structure under Residual Tensile Stress

2014 ◽  
Vol 543-547 ◽  
pp. 1533-1536
Author(s):  
Ban Quan Yang ◽  
Xue Jun Chen ◽  
Wei Hai Sun ◽  
Hong Qian Chen ◽  
Jing Wen Pan ◽  
...  
Keyword(s):  
Thin Film ◽  
Mechanical Properties ◽  
Tensile Stress ◽  
Fracture Behavior ◽  
Crack Density ◽  
Film Structure ◽  
Geometric Parameters ◽  
Residual Tensile Stress ◽  
Thin Film Structure ◽  
Layered Thin Film

The effect of the mechanical properties and geometric parameters on the crack density of a multi-layered thin film structure under residual tensile stress is investigated theoretically. The numerical results show that the crack density of the thin film 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 multi-layered thin film structure under residual tensile stress.

A Theoretical Analysis of the Fracture Behavior of a Multi-Layered Thin Film Structure under Residual Tensile Stress

2011 ◽  
Vol 239-242 ◽  
pp. 2179-2182 ◽  
Author(s):  
Ban Quan Yang ◽  
Fa Xin Li
Keyword(s):  
Thin Film ◽  
Residual Stress ◽  
Tensile Stress ◽  
Fracture Behavior ◽  
Crack Density ◽  
Film Structure ◽  
Geometric Parameters ◽  
Residual Tensile Stress ◽  
Layer Thin Film ◽  
Layered Thin Film

In this work, the fracture behavior of a multi-layered thin film structure under residual tensile stress is investigated theoretically. Using composite material theory and a modified shear-lag model, the analytical solutions for the distribution laws of the tensile stress developed in the first-layer thin film and the shear stress developed along the interface can be obtained. In addition, the crack density of the first-layer thin film can be derived from the residual stress and the mechanical and geometric parameters of the cracked system. This result also yields a measurement of the residual stress from the crack density and the mechanical and geometric parameters of the system. Finally, a numerical example is presented to show how the crack density varies versus the residual stress.

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