Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Crack detection using photogrammetry
Cracks and strains are the extern indications for the behaviour of loaded concrete constructions. The measurement technique photogrammetry and the subsequent analysis of deformations are in the focus of this article. From the measured displacements a field of strains is computed and a crack pattern is extracted. If both are known, the exact crack opening is investigated. Different ways of simple or exact procedures are described. The strain of the concrete matrix for the mapping model deduces different questions. The strain of the concrete is between one or two dimensions smaller than the crack opening. Mainly at a later point of time of the test at an intermediate crack formation, the neglection is advisable. Than the presented model is a strong simplification of the real state. The distribution of the material, of the geometric set-up and forces, stresses and strains subject a strong noise, which can exceed the researched strain. The last aspect is the measurement technique photogrammetry with an accuracy of approximately at 3 - 5 microns, which is also in the same dimension.
Crack detection using photogrammetry
Cracks and strains are the extern indications for the behaviour of loaded concrete constructions. The measurement technique photogrammetry and the subsequent analysis of deformations are in the focus of this article. From the measured displacements a field of strains is computed and a crack pattern is extracted. If both are known, the exact crack opening is investigated. Different ways of simple or exact procedures are described. The strain of the concrete matrix for the mapping model deduces different questions. The strain of the concrete is between one or two dimensions smaller than the crack opening. Mainly at a later point of time of the test at an intermediate crack formation, the neglection is advisable. Than the presented model is a strong simplification of the real state. The distribution of the material, of the geometric set-up and forces, stresses and strains subject a strong noise, which can exceed the researched strain. The last aspect is the measurement technique photogrammetry with an accuracy of approximately at 3 - 5 microns, which is also in the same dimension.
Crack detection using photogrammetry
Rissnachweis mittels Photogrammetrie
Lange, J. (Autor:in) / Benning, W. (Autor:in)
2006
8 Seiten, 12 Bilder, 9 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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