Precision of CSLT measurement system for defect detection in bored piles

Tak Cho Eric Ho*, Inez Maria Zwetsloot

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Crosshole Sonic Logging Tomography (CSLT) is an emerging innovative measurement system which provides information on the size, shape, and orientation of defects in a bored pile. In this paper, we quantify measurement precision of the CSTL system by a gage repeatability and reproducibility (R&R) study, in order to understand and model the effects of the test operators, defects, and the test machines on measurement error. We do this by setting up a test pile with three know defects and performing various measurement experiments. We use a feature extraction method to quantify measurement error. Overall, we find that the CSLT has satisfactory repeatability and reproducibility for practical usage of defect detection. © 2022 Taylor & Francis Group, LLC
Original languageEnglish
Pages (from-to)353-363
JournalQuality Engineering
Volume35
Issue number2
Online published13 Sept 2022
DOIs
Publication statusPublished - 2023

Research Keywords

  • bored pile
  • concrete testing
  • crosshole tomography
  • CSL
  • CSLT
  • foundation testing
  • Gage R&R
  • measurement accuracy and precision
  • ultrasonic

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