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The experimental setup for this study consisted of a custom-built testing apparatus that included a load cell, a displacement sensor, and a servo motor to apply and measure the strain on the sample. The sample was prepared by cutting it to the appropriate size and polishing the surface to a mirror finish to ensure accurate strain measurements. The load cell and displacement sensor were calibrated prior to each test to ensure accurate measurements.
1. What did the experimental setup for this study consist of?
2. How was the sample prepared for testing?
3. What equipment was calibrated prior to each test?
4. Was the sample polished before the test? If yes, why?