Электронная экспериментальная система интерферометрии

Electronic speckle pattern interferometry (ESPI) technology is a non-contact real-time measurement technology in the audience, because of its versatility, high accuracy, wide frequency range and has the advantages of simple measurement, electronic speckle pattern interferometry nondestructive detection technology can complete the displacement, strain, surface defects and cracks and other test. The electronic speckle pattern interferometry experimental system, based on the rough surface information carrier and speckle, is used to study the out of plane deformation of objects. It is a modern optical measurement technology combined with computer image processing technology, laser technology and holographic interferometry. The high coherence of the laser makes it obvious that the speckle is obvious. The CCD camera can be used to process data and images by computer. Electronic speckle interferometry is widely used, such as body shape change measurement, nondestructive measurement, vibration measurement and so on.