Welding morphology analysis of porous materials based on industrial CT technology
WU Lei1，CHEN Hong′en2，CAO Bailiang1，NAN Haijuan1
（1. Western Baode Technology Co., LTD., National and Local Joint Engineering Research Center for Filtration and
Separation Technology, State Key Laboratory of Porous Metal Materials, Xi 'an 710201; 2. Institute of Astronau‐
tics and Mechanics, Xi 'an Jiaotong University, Shaanxi Engineering Research Center for Nondestructive Testing
and Structural Integrity Evaluation, Xi 'an 710049）
Abstract：Based on industrial CT, the welding morphology of porous materials was investigated. Three kinds of
typical sintered metallic porous material, such as stainless steel powder, wire meshandfiber, are studied respec‐
tively after welding with the dense ring. According to research, the pores of porous material don’t affect the CT
results, within the weld and porous material structure are clearly visible. Due to the outlines in the CT result, the
welding status can be evaluated, the rounder and the brighter, the fuller the welding. Moreover, defects such as
excessive welding, holes, incomplete welding, incomplete fusion and deformation can be found, and the result
can be used as the basis for measuring thickness and distribution.
2023, Vol. 33 
