A comparative study of random speckle pattern simulation models in digital image correlation

Gu, Guoqing

doi:10.1016/j.ijleo.2015.08.271

Cited by 15 publications

(3 citation statements)

References 14 publications

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“…The HOMO, LUMO and band gap of F8T2 and PDY-132 are À5.5 eV, À3.1 eV, 2.4 eV and À5.1 eV, À2.8 eV, 2.3 eV, respectively. 14 An important finding is that effective systems usually exhibit a maximum of 140 meV difference in the molecular orbital energy levels between the donor and acceptor. This creates a CT state at the interface with an energy (E CT ) lower than the energy gap (E g ).…”

Section: Resultsmentioning

confidence: 99%

“…Similarly, F8T2 acts as an acceptor, characterized by its HOMO energy at À5.1 eV and LUMO energy at À2.8 eV. 14 Fo ¨rster resonance energy transfer (FRET) has been recognized as the charge transfer mechanism within the PDY-132:F8T2 polymer blend. Consequently, at the interfaces of the cathode/emissive layer and HTL/emissive layer, the mechanism of charge injection is greatly influenced by field-supported tunnelling across an energy barrier, which plays a crucial and substantial role.…”

Section: Introductionmentioning

confidence: 99%

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Ultrafast charge transfer in a PDY-132:F8T2 polymer blend for lowering turn on voltage in OLEDs: implications of low Urbach energy and faster photoluminescence dynamics

Yadav,

Singh

2024

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultrafast charge transfer in a PDY-132:F8T2 polymer blend for lowering turn on voltage in OLEDs: implications of low Urbach energy and faster photoluminescence dynamics

Yadav,

Singh

2024

New J. Chem.

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“…Therefore, the development of high-fidelity simulations of 3D-DIC is of significant value, as they can assist researchers in device selection, system design, algorithm testing, precision assessment, etc., at a low cost. However, existing research on DIC simulation remains limited and is mostly carried out carried out by generating random speckle images [33,34]. For example, Estrada and Franck [35] proposed a DIC random speckle image generator based on MATLAB.…”

Section: Introductionmentioning

confidence: 99%

A Novel Simulation Method for 3D Digital-Image Correlation: Combining Virtual Stereo Vision and Image Super-Resolution Reconstruction

Chen,

Li,

Liu

et al. 2024

Sensors

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3D digital-image correlation (3D-DIC) is a non-contact optical technique for full-field shape, displacement, and deformation measurement. Given the high experimental hardware costs associated with 3D-DIC, the development of high-fidelity 3D-DIC simulations holds significant value. However, existing research on 3D-DIC simulation was mainly carried out through the generation of random speckle images. This study innovatively proposes a complete 3D-DIC simulation method involving optical simulation and mechanical simulation and integrating 3D-DIC, virtual stereo vision, and image super-resolution reconstruction technology. Virtual stereo vision can reduce hardware costs and eliminate camera-synchronization errors. Image super-resolution reconstruction can compensate for the decrease in precision caused by image-resolution loss. An array of software tools such as ANSYS SPEOS 2024R1, ZEMAX 2024R1, MECHANICAL 2024R1, and MULTIDIC v1.1.0 are used to implement this simulation. Measurement systems based on stereo vision and virtual stereo vision were built and tested for use in 3D-DIC. The results of the simulation experiment show that when the synchronization error of the basic stereo-vision system (BSS) is within 10−3 time steps, the reconstruction error is within 0.005 mm and the accuracy of the virtual stereo-vision system is between the BSS’s synchronization error of 10−7 and 10−6 time steps. In addition, after image super-resolution reconstruction technology is applied, the reconstruction error will be reduced to within 0.002 mm. The simulation method proposed in this study can provide a novel research path for existing researchers in the field while also offering the opportunity for researchers without access to costly hardware to participate in related research.

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Effect of Speckle Edge Characteristics on DIC Calculation Error

Cui,

Zeng,

Zhang

et al. 2024

Exp Mech

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A comparative study of random speckle pattern simulation models in digital image correlation

Cited by 15 publications

References 14 publications

Ultrafast charge transfer in a PDY-132:F8T2 polymer blend for lowering turn on voltage in OLEDs: implications of low Urbach energy and faster photoluminescence dynamics

Ultrafast charge transfer in a PDY-132:F8T2 polymer blend for lowering turn on voltage in OLEDs: implications of low Urbach energy and faster photoluminescence dynamics

A Novel Simulation Method for 3D Digital-Image Correlation: Combining Virtual Stereo Vision and Image Super-Resolution Reconstruction

Effect of Speckle Edge Characteristics on DIC Calculation Error

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