CONTACTLESS METHOD OF MEASURING THE DENSITY OF A POROUS MATERIAL, USING A MEASUREMENT OF THE REFRACTIVE INDEX OF THE MATERIAL OBTAINED BY OPTICAL COHERENCE TOMOGRAPHY

摘要

The contactless method of measuring the density of a porous material uses a measurement of the refractive index of the material obtained by optical coherence tomography. According to the invention, an optical coherence tomography technique is used to determine the optical path corresponding to the penetration through an object (20) made of the material by a light beam used in the technique; the thickness of the object is determined; the refractive index of the material is determined from the optical path and the thickness; and the density of the material is determined from the refractive index.