Techniques of Acoustic Resonance Spectroscopy
Original Publication Date: 1986-Nov-01
Included in the Prior Art Database: 2005-Mar-09
The technique of acoustic resonance spectroscopy (ARS) as excited by scanning the frequency of modulation of a magnetic field acting on a sample is not limited to ferromagnetic samples nor to magnetic excitations. This immediately opens up many other fields of applications of ARS for automated manufacturing applications (e.g. material control or process monitoring) invol products containing metal, semiconductor, or ceramic parts. We show here the signals that can be observed in examples of each of these materials, and excited by purely magnetic modulations or by other means. The electronic detection scheme has previously been described as electrically-conductive ceramic material for the case of application of ARS to investigate ferromagnetic samples.