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http://elartu.tntu.edu.ua/handle/123456789/1654
| Title: | Automated evaluation of strain fields by the coordinate-grid method |
| Authors: | Ясній, Петро Володимирович Коноваленко, Ігор Володимирович Марущак, Павло Орестович Yasnii, Petro Volodimirovich Konovalenko, Igor Volodimirovich Maruschak, Pavlo Orestovich |
| Bibliographic description (Ukraine): | Yasnii P. V. Automated evaluation of strain fields by the coordinate-grid method/ P. V. Yasnii, I. V. Konovalenko and P. O. Marushchak// Materials Science,- 2009.- Vol. 45, No. 2,- pp.291-297 |
| Issue Date: | 1-四月-2009 |
| Date of entry: | 21-五月-2012 |
| Publisher: | Springer Science+Business Media, Inc. |
| Keywords: | digital photographic image vector of displacement strain stress |
| Abstract: | We develop an automated coordinate-grid method (CGM) aimed at the evaluation of surface displacements and strains. Points of marking of the surface are used as bases. The principles of application of the CGM are described in detail. By using the proposed method, we find the elastoplastic strains in the material. The possibilities of the CGM are experimentally verified and its applicability to the evaluation of strains and displacements is demonstrated. |
| Description: | There exist numerous approaches to the determination of local strains in structural elements among which one can mention the well-known coordinate-grid method [1–6]. The application of digital technologies makes it possible to perform mathematical processing of the obtained photographic images and substantially decrease the laboriousness of data processing [5, 6]. To increase the accuracy of measurements, it is customary to use highresolution optical microscopes and photocameras [7]. However, there exist methodical difficulties connected with the identification of points of the coordination grid, taking into account the gradient of illumination of the specimen surface, and other specific features of getting and processing the images. In what follows, we study the strains formed on the surface of a steel specimen under static loading and determine the vectors of displacements of mesovolumes of the material of the specimen. |
| URI: | http://elartu.tntu.edu.ua/handle/123456789/1654 |
| Content type: | Article |
| �蝷箔����: | Наукова діяльність Яснія П. В. Наукові публікації працівників кафедри автоматизації технологічних процесів та виробництв |
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