ASTM International - ASTM A772/A772M-00(2011)e1

Standard Test Method for AC Magnetic Permeability of Materials Using Sinusoidal Current

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Organization: ASTM International
Publication Date: 1 May 2011
Status: historical
Page Count: 4
ICS Code (Magnetic materials): 29.030
significance And Use:

The permeability determined by this method is the impedance permeability. Impedance permeability is the ratio of the peak value of flux density (Bmax) to the assumed peak magnetic field... View More

scope:

1.1 This test method provides a means for determination of the impedance permeability (μz) of ferromagnetic materials under the condition of sinusoidal current (sinusoidal H) excitation. Test specimens in the form of laminated toroidal cores, tape-wound toroidal cores, and link-type laminated cores having uniform cross sections and closed flux paths (no air gaps) are used. The method is intended as a means for determining the magnetic performance of ferromagnetic strip having a thickness less than or equal to 0.025 in. [0.635 mm].

1.2 This test method shall be used in conjunction with those applicable paragraphs in Practice A34/A34M.

1.3 The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this standard, SI units are shown in brackets except for the sections concerning calculations where there are separate sections for the respective unit systems. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Document History

April 1, 2016
Standard Test Method for AC Magnetic Permeability of Materials Using Sinusoidal Current
4.1 The permeability determined by this method is the impedance permeability. Impedance permeability is the ratio of the peak value of flux density (Bmax) to the assumed peak magnetic field strength...
Standard Test Method for ac Magnetic Permeability of Materials Using Sinusoidal Current
1.1 This test method provides a means for determination of the impedance permeability (μz) of ferromagnetic materials under the condition of sinusoidal current (sinusoidal H) excitation. Test...
ASTM A772/A772M-00(2011)e1
May 1, 2011
Standard Test Method for AC Magnetic Permeability of Materials Using Sinusoidal Current
1.1 This test method provides a means for determination of the impedance permeability (μz) of ferromagnetic materials under the condition of sinusoidal current (sinusoidal H) excitation. Test...
November 1, 2005
Standard Test Method for ac Magnetic Permeability of Materials Using Sinusoidal Current
The permeability determined by this method is the impedance permeability. Impedance permeability is the ratio of the peak value of flux density (Bmax) to the assumed peak magnetic field strength (Hz)...
October 10, 2000
Standard Test Method for ac Magnetic Permeability of Materials Using Sinusoidal Current
1.1 This test method provides a means for determination of the impedance permeability (µz) of ferromagnetic materials under the condition of sinusoidal current (sinusoidal H) excitation. Test...
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