PARAMETER ESTIMATION OF STRUCTURES FROM STATIC STRAIN MEASUREMENTS. II: ERROR SENSITIVITY ANALYSIS

In a companion paper, the authors developed a method for parameter estimation of structures using subsets of static applied forces and strain measurements to identify structural element stiffnesses. The selection of these subsets dramatically affect the accuracy of the parameter estimates in the presence of noisy measurements. Consequently, a heuristic method is presented for choosing a small subset of forces and strain measurements so as to have the least sensitivity to measurement noise. Once chosen, using a Monte Carlo analysis, the subset of measurements is analyzed to determine an input-output error relationship. This heuristic method can be used to design near-optimal experiments for the nondestructive testing and parameter estimation of structures. Truss and frame examples are provided and a small and noise-tolerant subset of forces and strains is successfully identified for possible nondestructive testing.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339445
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Sanayei, M
  • Saletnik, M J
• Publication Date: 1996-5

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 563-572
• Serial:
  • Journal of Structural Engineering
  • Volume: 122
  • Issue Number: 5
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9445
  • Serial URL: http://ascelibrary.org/loi/jsendh

Subject/Index Terms

• TRT Terms: Error analysis; Estimating; Estimation theory; Heuristic methods; Nondestructive tests; Sensitivity; Statics; Stiffness; Strain measurement; Structures
• Uncontrolled Terms: Parameters
• Old TRIS Terms: Selectivity; Static conditions
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00723371
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 29 1996 12:00AM