研究目的
To present a novel high-speed interferometric thickness measurement system for thin films during spray film interaction, overcoming the ambiguities of the phase demodulation process during fringe pattern analysis.
研究成果
The developed interferometric measurement system successfully measures thin film thickness distributions during and after spray impingement, with a measurement error around 5%. The system provides valuable insights into the fluid volume increase at the spray impingement point.
研究不足
The computational time for phase demodulation is significant, varying between two and five days per image. The system's accuracy is affected by noisy or blurred image regions, leading to potential errors in phase demodulation.
1：Experimental Design and Method Selection:
The system combines a high-speed camera for 2-D topographic fringe images with a spectrally resolved white light interferometer.
2：Sample Selection and Data Sources:
Diesel serves as a film and injected fluid under atmospheric conditions.
3：List of Experimental Equipment and Materials:
Includes a Fizeau-interferometer, high-speed camera, spectrally resolved white light interferometer, and a spin coater for film production.
4：Experimental Procedures and Operational Workflow:
The system captures interference patterns during diesel spray impingement onto a predefined diesel film.
5：Data Analysis Methods:
An improved generalized regularized phase tracker (iGRPT) technique is used for phase demodulation.
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