ndsram, that is a great idea to find out how much magnetic field is required to get an optimized mfl by first using an electromagnet... but unfortunately the data sheet of the permanent magnet does not give any other information except it say that the magnet have 60kg of pulling force... so even...
MagBen, so what those imply is i need just the right amount magnetic field strength that can give good differences between crack and no crack reading? if that is the case how bout i increase the depth of the passer metal to reduce the magnetic field strength to a more suitable magnitude?
Is...
Actually its the other way around, the system can detect crack by detecting MFL. The magnetic flux that flow through the metal will emanate at the surrounding air as it came across discontinuity such as crack, dents etc. By using linear hall effect sensor, we can get detect crack by measuring...
N D Senthil Ram: well the magnet is u shaped, this is the magnet datasheet link http://docs-europe.electrocomponents.com/webdocs/0028/0900766b80028acb.pdf... the magnet is from eclipse model 818 power magnet. So the changes in the shape will route the magnetic flux into a more confined area and...
Well does smaller volume but larger surface area does any help?? Does those spec help pass more magnetic field but still make it stick less?? The goal is, to minimize the pulling force of the magnet on the metal going to be inspected but at the same time maximizing magnetic field that flow...
Hi... im currently on a project where i need to design a system to inspect metal crack by using Magnetic Flux Leakage. due to portability and power factor i've decided to use permanent magnet as the system's magnetizer due to its passive properties (does not need external power). The magnet have...
