Stress measurement using magnetic Barkhausen noise and metal magnetic memory testing
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چکیده
منابع مشابه
Grain size measurement using magnetic and acoustic Barkhausen noise
Results on annealed nickel show that the total number of counts of both magnetic and acoustic Barkhausen signals vary inversely with grain size. In decarburized steels the total number of counts and the amplitude of both Barkhausen signals increase in proportion to grain size. The paper addresses these results in context of grain size, grain‐boundary segregation, and precipitate effect.
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Oil and gas pipelines are pressure vessels with steel walls operating at up to 70% of their yield strength. They need to be inspected rigorously to avoid failure and for environmental safety reasons. Magnetic flux leakage (MFL) is the most cost effective technique for in-service corrosion inspection ofburied gas pipelines [1]. In this method, the pipe wall is magnetized to near-saturation using...
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ژورنال
عنوان ژورنال: Measurement Science and Technology
سال: 2010
ISSN: 0957-0233,1361-6501
DOI: 10.1088/0957-0233/21/5/055703