The NG-AutoPol system is an automatic longitudinal polisher designed to prepare metallic specimens for tensile and fatigue testing. Its purpose is to remove machining marks, grinding stress, and residual surface stress that often remain after turning or milling operations. By polishing along the specimen’s longitudinal axis, the system produces a uniform, low-stress surface that accurately reflects the material’s intrinsic mechanical behavior.

This precise surface preparation is essential for generating reliable tensile and fatigue test results. In tensile testing, it ensures that elongation and yield measurements are not distorted by surface imperfections. In fatigue testing, it minimizes premature crack initiation caused by microscopic scratches or stress concentrations.

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