Non-destructive testing of Q345 steel welds with X-ray radiography

Title: Non-destructive testing of Q345 steel welds with X-ray radiography
Author(s): J. Zhang, Y. Liu
Paper category : conference
Book title: International Conference on Advances in Concrete and Structures
Editor(s): Ying-shu Yuan, Surendra P. Shah and Heng-lin Lü
Print-ISBN: 2-912143-41-1
e-ISBN: 2351580176
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 540 - 545
Total Pages: 6
Nb references: 5
Language: English

Abstract: 
X-ray radiographic testing was carried out for the Q345 steel welds of plate that is 10 mm in thickness and used in constructing a skywalk. 37 welding specimens from 7 strips of the welds that picked randomly from a batch of welds in field were tested. The energy of X-ray radiation was 170 kV and 5 mA, and the exposure time was 2 minutes at FFD (focus to film distance) of 75 cm. The testing method is introduced, and the characteristics of welding images obtained from X-ray radiography are compared. The results show that the appearance of faulty welds are multiplicity, and their main defects exhibited the behaviors with cold solder joint, missing welding brokenly, dross, dirt inclusions, pinhole, air bubble etc. According to the properties and amount of the welding defects, they can be divided into four levels with A, B, C and D. The distribution of welds with different defect level and properties are given for evaluating the acceptable defect level of the welds.

Online publication: 2003-08-10
Publication type : full_text
Public price (Euros): 0.00