Evaluation of Bending Stresses in Pipelines by Using Hole-drilling Measurements Combined with Interferometry

Pacheco, Anderson Sasaki Vasques; Viotti, Matı́as R.; Veiga, C.; Albertazzi, Armando

doi:10.1007/s11340-015-0079-0

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…The methodology used for computing the longitudinal stress follows the recommendations presented in the ASTM E837 (2013), considering the case for non-uniform stresses. The representative value of 150.5 MPa for the longitudinal stress was, posteriorly, computed in accordance with the methodology presented in Pacheco et al (2016). When the difference map of Figure 8 is compared with the respective one for indentation (see Figure 6) fringes have completely different shapes.…”

Section: Pipeline Applicationmentioning

confidence: 99%

“…A detailed description of the optical interferometer as well as the combination with instrumented indentation can be found in Albertazzi et al (2008) and in Viotti and Albertazzi (2013). This hybrid technique uses displacement information, Pacheco et al (2016), collected from a predefined mesh around the indentation. Stress function coefficients are determined from the experimental data and the displacement information is fitted to extract stress function parameters.…”

Section: Introductionmentioning

confidence: 99%

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Pipeline Stress Analysis Through Stress Function Fittings

Cavaco

Viotti

Albertazzi

2018

Lat. Am. j. solids struct.

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This work presents a hybrid experimental technique for stress analysis in pipes due to soil-pipe interaction. It was used a variation of Digital Speckle Pattern Interferometry (DSPI) combined with a small indentation setup for acquiring radial displacement points. Data collected are fitted under the Airy stress functions method for the determination of displacements and strain components. The radial displacement data is fitted in to extract Airy stress function coefficients in a short combination selected specifically for the analysis of stress fields in pipes. This technique is of great utility as an auxiliary approach to the actual field data compilation.

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Section: Pipeline Applicationmentioning

confidence: 99%