2D size, position and shape definition of defects by B-scan image analysis

Journal Title: Frattura ed Integrità Strutturale - Year 2015, Vol 9, Issue 34

Abstract

 The non-destructive evaluation of defects by automatic procedures is of great importance for structural components. Thanks to the developments of the non-contact ultrasonic techniques, the automation of the inspections is gaining a progressively important role. In this work, an automatic inspection technique for the evaluation of defects by the analysis of B-scan images obtained by a laser ultrasonic system is presented. The data are extracted directly from a B-scan map obtained for a panel with internal defects, and are used to build an image of the cross section of the panel. The proposed automatic procedure allows the definition of size, position and shape of defects in panels of known thickness.

Authors and Affiliations

Michele Scafidi, Donatella Cerniglia, Tommaso Ingrassia

Keywords

Related Articles

 Multiple and non-planar crack propagation analyses in thin structures using FCPAS

 In this study, multiple and non-planar crack propagation analyses are performed using Fracture and Crack Propagation Analysis System (FCPAS). In an effort to apply and validate FCPAS procedures for multiple a...

 Tests in tension-torsion conditions with descending sections of strain curve construction

 The paper is devoted to theoretical and experimental investigation of materials behavior on postcritical deformation stage (strain softening). Tests results, which confirm theoretical justification of specimen conf...

Growth behavior of fatigue cracks in ultrafine grained Cu smooth specimens with a small hole

 In order to study the growth mechanism of fatigue cracks in ultrafine grained copper, stresscontrolled fatigue tests of round-bar specimens with a small blind hole as a crack starter were conducted. The hole was...

 Analysis of the causes of failure in 5Cr-1Mo pipes mounted in a preheating furnace

 The oxidation resistance of iron-based alloys depends on the formation of thin protective films consisting of reaction products between the alloys and the ambient atmosphere. The high corrosion resistance of Fe-Cr-...

 Influence of the crack propagation rate in the obtaining opening and closing stress intensity factor by finite element method

 Crack propagation simulation began with the development of the finite element method; the analyses were conducted to obtain a basic understanding of the crack growth. Today structural and materials engineers...

Download PDF file
  • EP ID EP90411
  • DOI 10.3221/IGF-ESIS.34.68
  • Views 54
  • Downloads 0

How To Cite

Michele Scafidi, Donatella Cerniglia, Tommaso Ingrassia (2015).  2D size, position and shape definition of defects by B-scan image analysis. Frattura ed Integrità Strutturale, 9(34), 622-629. https://europub.co.uk/articles/-A-90411