Detection of Initial Yield and Onset of Failure in Bonded Posttensioned Concrete Beams

作者：Salamone Salvatore^*; Veletzos Marc J; di Scalea Francesco Lanza; Restrepo Jose I

来源：Journal of Bridge Engineering, 2012, 17(6): 966-974.

DOI：10.1061/(ASCE)BE.1943-5592.0000311

• Acoustic emission
• Outlier analysis
• Structural health monitoring
• Posttensioned structures

This paper discusses monitoring of bonded posttensioned (PT) concrete elements using the acoustic emission technique. In particular, a statistical pattern recognition technique based on a multivariate outlier analysis is presented to identify initial yielding and the onset of failure. Experimental tests on large-scale single-tendon bonded PT concrete beams, subjected to multiple load cycles, will be presented to validate the proposed monitoring system. DOI: 10.1061/(ASCE)BE.1943-5592.0000311.

• 出版日期2012-12