Textile reinforcement (SFB 528 / Service Project Y1)
Project title
Textile reinforcement for structural strengthening and repair
Sub-project: Ditgital photogrammetric techniques for measuring deformation, cracks and structural changes during load tests of textile reinforced test objects
Funding
German Research Foundation (DFG), SFB 528
Aims
- The subproject Y1 develops and applies methods of digital photogrammetry and computer tomography for the automatic measurement of two- and three-dimensional displacement fields, deformations and surface defects such as cracks of test objects and structures during short and long time load tests.
- Determination of optimal methods and parameters, optimization and further development of algorithms to improve the measurment precision and interpretation, cataloging characteristic parameters (material, methods, ..)
- Simultaneous use of geometric and radiometric high-resolution cameras, infrared thermography and computer tomography
- Scientifically support of subprojects: A2, A3, A5, B1, C1, C3, C5 and D2
Results
- Methods of digital photogrammetry depict a suitable tool for the automatic measurement of two- and three-dimensional displacement fields, deformations and surface defects such as cracks of textile reinforced test objects and structures during short and long time load tests.
- The determination of characteristically material and process parameters plays an important roll in connection with selection, use and development of optimal measuring methods.
- On basis of this knowledge, concepts for a modular photogrammetric measuring system were developed and realized.
Applications
- Verification and variance comparison
- Calibration of fiber-bragg-grid-sensors (mirror photogrammetry) (SP A2)
- Determination of deformations and cracks during tension tests of textile reinforced concrete (SP B1)
- Determination of deformations, strain and cracks during shear tests of textile reinforced concrete (SP C1)
- Determination of deformations, strain and crakcs during load test of textile reinforced wood (TP C3)
- Determination of deformations during shear tests of concrete (TP D2)
- Material analysis of textile reinforced concrete and wood with computer tomography
Related Publications
Einsatz der digitalen Photogrammetrie bei Belastungsversuchen von Baukonstruktionen
Typ der Veröffentlichung
Technischer Bericht
Veröffentlicht in
VDI Berichte 1463
Schlagwörter
Materialprüfung
Jahrgang/Erscheinungsjahr
1999
Referiert
Nein
Open Access
Nein
Berichtsjahr
1999
Export
Contact
- Prof. Dr. habil. Hans-Gerd Maas (project management)
- Dipl.-Ing. Uwe Hampel (project work)