- 标题
- 摘要
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- 实验方案
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Hybrid spherical particle field measurement based on interference technology
摘要： Interferometric particle imaging is widely used in particle size measurement. Conventional algorithms, which focus on single size particle fields, have difficulties in extracting each interference fringe in a hybrid spherical particle field due to the noise. To solve this problem, an iterative mean filter (IMF) algorithm is proposed. Instead of the specific mean filter template coefficient, the noise is reduced by iterating the calculation results under different template coefficients. The average value of the calculation results excluding the gross error is output as the final result. The effect of different template coefficients are simulated, furthermore, the value range of template coefficients has been analyzed. The interferogram of the hybrid spherical particle field from 21.3 μm to 57.9 μm is processed by the conventional algorithms with specific template coefficients of 2, 8, 12 and the IMF algorithm. The corresponding measurement errors are 17.22%, 10.69%, 9.04% and 5.11%. The experimental results show that the IMF algorithm would reduce measurement error, and could be potentially applied in particle field measurement.
关键词： interferometric particle imaging,particle size measurement,hybrid spherical particle field,gross error elimination
更新于2025-09-23 15:19:57
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Third glare point effect in 90?°Interferometric Laser Imaging for Droplet Sizing
摘要： A detailed analysis of Interferometric Laser Imaging for Droplet Sizing is performed at the scattering angle 90?, in order to identify the influence of a third glare point on the measurements performed. Experimentally, p = 3 scattering, which involves surface waves, is shown to have an important impact on droplet sizing.
关键词： Glare points,Debye’s orders,ILIDS,Interferometric particle imaging,Light scattering
更新于2025-09-19 17:13:59
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Dual-beam interferometric particle imaging for size and shape characterization of irregular coal micro-particle: validation with digital inline holography
摘要： The size and shape characterization of irregular particles is of great significance in the comprehensive understanding of many natural and industrial processes. The dual-beam interferometric particle imaging (DIPI) technique is adapted from a dual-beam backward illumination configuration of interferometric particle imaging to access the size and 2D shape of an irregular particle from its interferogram. An experimental setup combining the digital inline holography (DIH) and DIPI techniques characterizes the same projection of the same particle with a color camera, permitting the accuracy evaluation and validation between these two techniques. The comparison results show a good agreement between the 2D-Fourier transform of DIPI interferogram and the 2D-autocorrelation of DIH reconstructed in-focus image. The DIH gives the reference result for the size measurement of the particles, and we observe a maximum difference as low as 9% with the DIPI measurement. The backward arrangement of the dual-beam interferometric particle imaging technique facilitates its further instrumental development and application to a variety of real circumstances, e.g., solid fuel particles and ice crystals.
关键词： Irregular particle,Size,Holography,Shape measurement,Interferometric particle imaging
更新于2025-09-11 14:15:04