Detection and 3-D positioning of small defects using 3-D point reconstruction, tracking, and the radiographic magnification technique
Artikel i vetenskaplig tidskrift, 2015

In this paper the capability of a 3-D point reconstruction algorithm based on multiple hypothesis tracking is experimentally explored on a setup consisting of a microfocus X-ray source and a digital detector array. The algorithm is verified to detect and 3-D position steel particles with diameters 0.16–0.26 mm radiographed behind 4.7 mm Inconel 718 at two to ten times magnification. At ten times magnification the algorithm is verified to detect and 3-D position with an average error of 0.1 mm pore defects with diameters 0.05–0.25 mm in 4.7 mm thick titanium alloy laser welds.

Nondestructive evaluation

Image analysis

Multiple hypothesis tracker

Radiography

Författare

Erik Lindgren

Chalmers, Material- och tillverkningsteknik, Avancerad oförstörande provning

NDT and E International

0963-8695 (ISSN)

Vol. 76 1-8

Drivkrafter

Hållbar utveckling

Styrkeområden

Produktion

Materialvetenskap

Ämneskategorier

Tillförlitlighets- och kvalitetsteknik

Annan materialteknik

DOI

10.1016/j.ndteint.2015.07.004