The Detection of Burn-Through Weld Defects Using Noncontact Ultrasonics

Materials

Ernesto Indacochea¹  NiloofarNabili Tehrani¹  Donald Yuhas¹  Zeynab Abbasi²  Didem Ozevin²  Alexandra-Del-Carmen Basantes²  Lu Zhang³ 

[1] Materials Engineering Department, University of Illinois at Chicago, Chicago, IL 60607, USA;;Civil &Industrial Measurement Systems Inc., Aurora, IL 60502, USA;

关键词: Burn-through;    weld bead width;    noncontact;    air-coupled ultrasonics;   

DOI  :  10.3390/ma11010128

来源: DOAJ

【 摘 要 】

Nearly all manufactured products in the metal industry involve welding. The detection and correction of defects during welding improve the product reliability and quality, and prevent unexpected failures. Nonintrusive process control is critical for avoiding these defects. This paper investigates the detection of burn-through damage using noncontact, air-coupled ultrasonics, which can be adapted to the immediate and in-situ inspection of welded samples. The burn-through leads to a larger volume of degraded weld zone, providing a resistance path for the wave to travel which results in lower velocity, energy ratio, and amplitude. Wave energy dispersion occurs due to the increase of weld burn-through resulting in higher wave attenuation. Weld sample micrographs are used to validate the ultrasonic results.

【 授权许可】

Unknown