Scraping the barnacles off "The skin effect" posts......MattR.UK

[MattR]

FREQUENCY, AND THE SKIN EFFECT, ARE THE MOST IMPORTANT FACTORS IN METAL DETECTING​

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The 'Skin effect' as a phenomenon, depends on several factors.

Principally: - (1) Applied FREQUENCY.
(2) Target CONDUCTIVITY
(3) Target MAGNETIC PERMEABILITY
(4) Target THICKNESS
(5) Target SHAPE

The target's REACTIVE profile, resulting from any applied alternating flux, modeled as a basic FIRST ORDER equivalence, contains both RESISTIVE and INDUCTIVE components.

[attachment 36995 ACoin.JPG]

Higher order equivalent modeling may be more appropriately assigned to a target, depending on variations of the fundamentals listed.

The skin effect is operable and applicable, from the first cycle of any involved alternating voltage or resulting current, regardless of its frequency.

The frequency dictates the

 

[Captain Kirk]

Matt,

You are exactly correct in that the subject is very complex and simplistic explanations and drawings can only represent the general ideas. Is it not amazing how nature manages to figure out how it is supposed to behave in real time.

Glenn

 

[Cody]

Very good illustration and pretty close to what I understood from non destructive testing of metals. You are very helpful in adding dots that are connected to solve a little more of the mysteries of the marvelous metal detector. Ha

MattR, I am still deeply involved in the probate so will get with you when the probate is settled.