What Does ESPI Stand For?

ESPI stands for Electronic Speckle Pattern Interferometry

Electronic Speckle Pattern Interferometry (ESPI) is an advanced optical measurement technique used to analyze surface deformations and displacements with high precision. By employing the interference patterns created by coherent light sources, ESPI captures minute changes in the geometry of an object under study. This non-destructive method is widely applied in fields such as engineering, materials science, and structural health monitoring, providing valuable insights into stress distribution, vibration analysis, and material integrity.