METHOD FOR THE CONTACTLESS, DESTRUCTION-FREE DETER

专利名称：METHOD FOR THE CONTACTLESS,
DESTRUCTION-FREE DETERMINATION OF
THE HARDNESS, POROSITY AND/OR
MECHANICAL STRESSES OF MATERIALS OR
COMPOSITE MATERIALS
发明人：SCHREIBER, JÜRGEN,BENDJUS,
BEATRICE,CIKALOVA, ULANA,KHILO,
NIKOLAI
申请号：EP10735181.9
申请日：20100610
公开号：EP2580570B1
公开日：
20140924
专利内容由知识产权出版社提供
摘要：Method for the contactless, destruction-free determination of the hardness, porosity and/or mechanical stresses of materials or composite materials using speckle photometry, in which coherent electromagnetic radiation is directed at a defined incidence angle onto a surface region of a structural component or a sample and the surface region illuminated by said radiation is imaged on an at least two-dimensional array of optical detectors and thermal and/or mechanical activation is carried out at a surface at the structural component or the sample at a distance from the irradiated surface region; wherein the array is used to detect in a temporally and spatially resolved manner the intensity of speckle electromagnetic radiation which is emitted as a result of the irradiation of the surface, and the speckle diffusivity is determined therefrom and then the respective hardness, porosity and/or mechanical stress is determined using the
determined speckle diffusivity and reference values that were previously determined with other measurement methods for the respective material or material composite.
申请人：FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.,FRAUNHOFER GES ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E V,Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
地址：DE
国籍：DE
代理机构：Grambow, Uwe
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