Development of a methodology to continuously monitor the safety of complex structures /
The objective of this dissertation is to develop a practical
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| Format: | Thesis Book |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
1997.
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| Subjects: | |
| Online Access: | http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=739891321&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD |
| Summary: | The objective of this dissertation is to develop a practical methodology to continuously monitor the safety of complex structures. The methodology of interest here is a Level IV Nondestructive Damage Evaluation (NDE) method which can nondestructively assess the condition of the existing structure and simultaneously evaluate the safety of that same structure utilizing structural reliability concepts. The methodology proposed in this study deals with two broad activities : (1) periodic nondestructive damage detection; and (2) assessment of structural safety based on the results of damage detection. To meet the goal an established methodology which yields information on the stiffness properties from changes in dynamic properties (i.e., mode shapes and frequencies) of the pre-damaged and post-damaged structures is reviewed. Next, an efficient technique, to directly assess the reliability of a complex structural system from the reliabilities of components, is developed. This technique is validated via several examples using current techniques in structural reliability theory. The efforts combining these two activities, i.e., nondestructive damage detection and evaluation of structural reliability, are applied to the demonstration of the methodology using: (1) the modal data from numerical simulations, and (2) the modal data from real structures. |
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| Item Description: | Vita. "Major Subject: Civil Engineering". |
| Physical Description: | xvii, 213 leaves : illustrations ; 28 cm. Issued also on microfiche from University Microfilms Inc. |
| Bibliography: | Includes bibliographical references: pages 202-210. |