Acoustic emission characteristics during magnetization of ferromagnetic materials
نویسندگان
چکیده
منابع مشابه
Ultrafast magnetization dynamics in ferromagnetic materials
In recent magneto optical experiments (TR-MOKE) the timescale of laser induced demagnetization was found to be shorter than 0.5 ps. However, doubts have been raised if the measured signal reflects genuine loss of magnetic moment at all. Also, for these experiments no broadly accepted theory exists. Although a few models are able to fit the data, they generally have in common that they violate o...
متن کاملAcoustic emission during fracture of ceramic superconducting materials
In the ceramic materials acoustic emission (AE) is associated with a rapid elastic energy release due to the formation and expansion of cracks, which causes generation and propagation of the elastic wave. AE pulses measurement allows monitoring of internal stresses changes and the development of macroand micro-cracks in ceramic materials, and that in turn allows us to evaluate the time to failu...
متن کاملCharacteristics of acoustic emission during single diamond scratching of granite
The acoustic emission (AE) measured during single diamond scratching of granite can provide valuable information about the structural composition and sawability of natural stone material. As described by Prof. Dr.-Ing. R. Clausen*, Dr, C.Y. Wang** and Dr,-Ing, M. Meding***, scratching tests are shown to i ndicate a direct relationship between the characteristics of AE generated by scoring, the ...
متن کاملAcoustic Emission in Materials Research – a Review
This paper reviews progress in methods of signal analysis used in acoustic emission (AE) as applied to materials research field. The achievement and inadequacy in understanding of AE from materials during the deformation, fracture and other processes are examined systematically. New goals for the future are also discussed in view of new analytical tools and vastly advanced instrumentation.
متن کاملCharacteristics of Acoustic Emission Signals from Composites
Certain characteristics of acoustic emission (AE) signals from graphite-epoxy composite specimens were correlated last year with the mechanical behavior of the materials. Moisture degradation, which reduced the ultimate strength, resulted in a change in the AE amplitude distribution early in the loading history. Also, AE having distinct frequency spectral types tended to occur at or near singul...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1978
ISSN: 0001-4966
DOI: 10.1121/1.2004031