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Experimental dynamic deformation analysis of active stressed lap.
Applied Optics
|February 25, 2016
Summary
This study presents a method to measure dynamic surface deformation in active stressed laps used for mirror fabrication. Results show increased deformation velocity worsens lap accuracy, but optimization can boost processing efficiency.
Area of Science:
- Optical Engineering
- Materials Science
- Manufacturing Processes
Background:
- Fabricating high-precision optics like f/1.5 mirrors requires precise control over lap surface deformation.
- Understanding the dynamic behavior of active stressed laps is crucial for optimizing manufacturing processes.
- Existing methods may not fully capture the real-time surface accuracy under dynamic conditions.
Purpose of the Study:
- To introduce and validate a novel method for measuring dynamic surface deformation of active stressed laps.
- To quantify the relationship between deformation velocity and lap surface accuracy during mirror fabrication.
- To explore optimization strategies for grinding and polishing based on dynamic deformation characteristics.
Main Methods:
- Development of a measurement technique to assess dynamic surface deformation in active stressed laps.
- Experimental investigation of lap surface accuracy at various deformation velocities.
- Analysis of root-mean-square (RMS) lap surface error under static and dynamic conditions.
Main Results:
- Dynamic lap surface accuracy is demonstrably lower than static accuracy.
- Increased deformation velocity leads to a decline in dynamic surface accuracy.
- The difference in RMS lap surface error between static and dynamic states is less than 1 μm.
Conclusions:
- Dynamic surface deformation significantly impacts lap accuracy in optical fabrication.
- Optimizing the active stressed lap's deformation velocity based on the processing schedule can enhance efficiency.
- The findings enable improved grinding and polishing strategies for higher fabrication efficiency and precision.
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