Magnetic Particle Testing
Magnetic Particle Testing
(OP)
When using the Direct Head method to create a field around a test piece, why does electrocution not come into play if piece is touched? HIGH Amperage/Low Voltage? My basic Physics have disowned me!





RE: Magnetic Particle Testing
Start with low voltage.
The metal has very low resistance.
You have very high resistance.
Place yourself in paralell with the metal.
A very high current in the metal, a very low current in you.
People routinely handle batteries at low voltages 1.5volt, 9 volt etc with no fear of electrocution. I believe you need to get up to around 40 volt to develop a current high enough to stop your heart and that only in very ideal conditions like you are handling the electricity in a rainstorm.
Sorry, I didn't mean to in any way diminish the safety significance of electric power. At low voltage less than 10 volts for example it would be very difficult to figure out a way to hurt yourself.
=====================================
Eng-tips forums: The best place on the web for engineering discussions.
RE: Magnetic Particle Testing
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm