Acoustomagnetic TPU / SEG calculation model

[giantkiller]

Precession into inductance

or

High frequency discharge into capacitance. Slow draw through load.E. Timothy Trapp, Muller, Bedini, or spark gap.

or both models into 1 as in Hubbard.

Spank the capacitor and it absorbs it. Spank the inductor and it rings.

Giantkiller.

[tsl]

I've found something really interesting about the frequencies.See it for yourself
"The magnetoacoustic emission is a consequence of the existence of magnetic domains in ferromagnetic samples. This effect is driven by an alternating magnetic field, which engages the increase or decrease of the favoured magnetic domains and thereby the domain wall movement. In the standing wave case, the domain wall motion is correlated with the displacements of portions of the elastic ferromagnetic medium from the elastic standing wave in the sample. In this case, the MAE effect becomes maximum, the domain walls perform a forced oscillation, and we can obtain information about the evolution of the magnetic domains in the sample by the analysis of the resonance curve. Certainly, in the case of standing wave method, the maximum effect is obtained for the natural frequencies of the sample. In the sample, in the case of longitudinal wave, on both sides of the nodes, the medium is subject of alternative compressions and dilatations, such as the interaction between the magnetic wall motion and the elastic wave will have the maximum effect. By comparing the effect for natural frequencies of the sample, for a free behavior, the maximum effect is obtained for the first eigenfrequency of the ferromagnetic rod. This can be explained by the fact that in this case, in the whole sample, the wave oscillations and the magnetic wall motion are in phase. For the second natural frequency, with an node at the middle of the bar , only for half of the sample the two oscillations are in phase. This explain why the effect is approximately fifty percent lower as the effect for the first natural frequency, and the analogism can be extended to the next natural frequencies. Reciprocal, by placing the sample in a constant magnetic field, and transmitting an ultrasonic wave into the sample at the locations, where the standing wave stress is maximum, a high frequency magnetic field is generated by the reciprocal effect of magnetostriction [9].Due to the fact that the magnetoacoustic effect is very sensitive to the internal stress or to magnetic modifications, this method can be used in the nondestructive evaluation of ferromagnetic materials."

I would love to see how the simplest test setup  for a tpu using this effect would look like.

[Magnon]

I've found something really interesting about the frequencies.See it for yourself
"The magnetoacoustic emission is a consequence of the existence of magnetic domains in ferromagnetic samples. This effect is driven by an alternating magnetic field, which engages the increase or decrease of the favoured magnetic domains and thereby the domain wall movement. In the standing wave case, the domain wall motion is correlated with the displacements of portions of the elastic ferromagnetic medium from the elastic standing wave in the sample. In this case, the MAE effect becomes maximum, the domain walls perform a forced oscillation, and we can obtain information about the evolution of the magnetic domains in the sample by the analysis of the resonance curve. Certainly, in the case of standing wave method, the maximum effect is obtained for the natural frequencies of the sample. In the sample, in the case of longitudinal wave, on both sides of the nodes, the medium is subject of alternative compressions and dilatations, such as the interaction between the magnetic wall motion and the elastic wave will have the maximum effect. By comparing the effect for natural frequencies of the sample, for a free behavior, the maximum effect is obtained for the first eigenfrequency of the ferromagnetic rod. This can be explained by the fact that in this case, in the whole sample, the wave oscillations and the magnetic wall motion are in phase. For the second natural frequency, with an node at the middle of the bar , only for half of the sample the two oscillations are in phase. This explain why the effect is approximately fifty percent lower as the effect for the first natural frequency, and the analogism can be extended to the next natural frequencies. Reciprocal, by placing the sample in a constant magnetic field, and transmitting an ultrasonic wave into the sample at the locations, where the standing wave stress is maximum, a high frequency magnetic field is generated by the reciprocal effect of magnetostriction [9].Due to the fact that the magnetoacoustic effect is very sensitive to the internal stress or to magnetic modifications, this method can be used in the nondestructive evaluation of ferromagnetic materials."

I would love to see how the simplest test setup  for a tpu using this effect would look like.

The goal is to create coherent microwave radiation from constant magnetic field by wobbling free or unpaired ( ESR ) charged electrons by an acoustic pulse.
This coherent microwave radiation can be amplified with interferece, by reflecting part of the microwave signal back in a direction h in a toroid core. This alone creates power for one turn collector coil, but there is also an other phenomena involved, created nested microwave patterns, that exist at manytimes of distances r ( tpu core radius ). Those nested em patterns around are able to collect and suck charges and other fields around. Prime number of waves are used to create a stable field, without subharmonics.

TPU core composite material consists of three material:

Ferromagnetic and magnetostrictice particles to create a magnetic field and magnetostrictive effect for ultrasound. Nickel powder is used here.

Aluminium particles for charge collection and for paramagnetic properties.

Ferrite particles for magnetic field and for ESR, ferrite has a low conductivity and therefore low eddy current loss.

Elastic and insulating base material, where powders are mixed with, urethane foam can be used here.
Urethane foam has a sound speed around 1500 m/s.

In a core a longitudinal acoustic pulse is launched by vertical wound coil around the core, that is pulsed with a given acoustic freguency.

The needed h direction magnetic field is created by horizontal coil. Only low field strenght is needed, around 0.22T

Collector coil is also horizontal.

Radial HV E-field is created by one turn horizontal coil in a midde of the core.

I ask those who are interested about subject to join to replication project, this time we know what we are looking for and the device is based to known facts.

--Magnon

[Magnon]

You can also use electrostriction for acoustic wave generation, the setup is the same, but use AC high voltage. Electric potential difference of 10 kV / cm causes 0.1% deformation  ( strain ) in a urethane foam.
Advantage with a electrostriction is that the magnetic field can be stable all the time.
Use ferrite powder with permeability 2000, here is the list of manufacturers,

http://www.inductors.pl/polski/pm.php?lang=en

Adjust the magnetic field strenght in a core with a adjustable DC source, that is connected to horizontal coil, that exists around the core. If you have a constant magnetic field, it means that the ESR spectrum is very narrow but it gives coherent microwave radiation, when wobbled with a acoustic wave with a same wavelenght.

-- Magnon

[TechStuf]

You might benefit by contacting Mark Snoswell as he seems to be trucking down the same road.  If you find success, be prepared however,  I'm quite positive that TPTB are well equipped to monitor the 'airwaves' for the calling card excitedly being waved by a successful magnetic OU device.


TS