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Title: Technique development for field inspection of cracking in seam welded ducts

The resistance seam weld interfaces between alloyed and pure titanium are an in service concern due to precipitation of titanium hydride and resulting embrittlement and cracking. Several inspection techniques were developed and evaluated for field use to characterize the damage in the fleet. Electromagnetic, ultrasonic, florescent penetrant, thermographic, and radiographic techniques were considered. The ultrasonic and electromagnetic approaches were both found suitable. However, the electromagnetic approach is more desirable for field inspections, due to consistency and ease of use. The electromagnetic inspection procedure is able to discriminate between precursor damage and through cracking with sufficient sensitivity to small cracks.
Authors:
;  [1] ; ;  [2]
  1. Wyle Laboratories, Inc., Dayton, OH 45440 (United States)
  2. Wyle Laboratories, Inc., Oklahoma City, OK 73110 (United States)
Publication Date:
OSTI Identifier:
22263836
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1581; Journal Issue: 1; Conference: 40. annual review of progress in quantitative nondestructive evaluation, Baltimore, MD (United States), 21-26 Jul 2013, 10. international conference on Barkhausen noise and micromagnetic testing, Baltimore, MD (United States), 21-26 Jul 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; ALLOYS; CRACKING; CRACKS; DAMAGE; EMBRITTLEMENT; INSPECTION; INTERFACES; PRECIPITATION; SENSITIVITY; TITANIUM; TITANIUM HYDRIDES; WELDED JOINTS