| Author: | Arevalo, Aristides D |
| Title: | Nondestructive damage detection in steel frame structures |
| Degree: | M.Sc. |
| Year: | 1993 |
| Subject: | Non-destructive testing -- Mathematical models Non-destructive testing -- Data processing Building, Iron and steel -- Testing Steel, Structural -- Testing Hong Kong Polytechnic -- Dissertations |
| Department: | Department of Civil and Structural Engineering |
| Pages: | ii, 139, [138] leaves : ill. ; 31 cm |
| Language: | English |
| Abstract: | The increasing popularity of steel over traditional reinforced concrete in construction especially in factory and long span structures indicate the need for more inexpensive techniques for monitoring structural integrity of steel frame structures. The present paper investigates the use of measured modal data to detect, locate and quantify damage in plane frame structures. A sensitivity analysis is carried out to assess whether change in the physical parameters or the damage would cause measurable change in the dynamic response of the structure. The changes in the kinetic energy calculated from the measured mode shape and natural frequencies are then used to identify the location of the damage. Damage or change to the physical properties of the elements at the damaged node are quantified using system identification approach. The feasibility of the approach is demonstrated in a case study on a two storey steel frame and is verified using experimental results from a steel portal frame. A damage detection computer package for plane frame structure has been developed and is used in the investigation. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b11324879.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 7.19 MB | Adobe PDF | View/Open |
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