Recent content by jra12222

I am actually in my final year of the degree (mechanical engineering) however materials was never my strong point :sorry: I did read that information before and I also watched a number of videos on pitting/crevice corrosion, however I couldn't find a suitable example explanation. A summary of...

Hi all, I am trying to understand how the process of either crevice or pitting corrosion works (I believe they are quite the same) I understood the part of how they start and what enhances them or how they can be prevented, but I can't understand an actual scenario. Say for example we have...

OH never mind I just noticed I was making a mistake in the substitution of the values! I've been trying to figure it out for the past hour :( Sorry for this! Consider this thread closed Thanks :)

Oh no the first is the traditional one, I basically found voltage drop across the the parallel branches and then found the current using V=I/Z. Yes inductive and capacitive resistances are correct

Hi all, I was working the following example: where I need to find the currents. I tried solving using the traditional V=IR => I=V/R, and then I tried with the current division rule. However with the current division rule the answers don't match. Also according to the answers on the book the...

do you think I would need to provide some kind of support at the back end of the pipe to prevent it from moving backwards when it is rotating? I did see this machine some time ago however I sort of neglected it for this reason.

I did consider a bigger grinder however the gearbox is also bigger so the effective cutting area is still almost the same, I also taught about machining the rings of the angle grinder and make them smaller, but I'm not sure if I should do it since it would loose its CE marking

Yeah I could but I still wouldn't be able to measure the RPM. I was looking on youtube for methods to determine the RPM of a motor, this one is ingenious! Low cost and I guess its relatively accurate! I will try and experiment until i get about 8000RPM (I know i will also be reducing the...

First of all a big thanks to everyone, you've been a big help! Oh don't worry, I wouldn't have asked if I didn't want the suggestions! I did try to cut PVC with the cutting disk and it cut just fine, however no I have yet to test it with a 6'' cutting disk. Thanks @256bits I honestly could not...

I just wish to avoid performing any debarring. Initially that's how I was cutting them but now I just need many more so this would be a good investment for me. Also a side question, do you think it is wrong to use a 6'' cutting disk on a 5'' grinder? I tried searching the web for some...

That did cross my mind but any kind of saw (i tried jigsaw, oscillating multitool as well) would not result in a clean cut, while on the other hand a saw blade does not fit on an angle grinder...its inner diameter is slightly smaller

:DD:DD its not that simple :P Ok so I actually need to remove the guard because I was thinking of using a 6'' cutting disk on a 5'' angle grinder, meaning that it won't fit. I need to do this because I plan on cutting a PVC pipe held in place with jaws whose diameter is 40mm. However the...

OK so just a small recap; I need to find the center of gravity and the tangential velocity, I need to determine the kinetic energy Look into possible case studies of how this energy can be dissipated Finally I need to find materials which can be used for a worst case scenario where the...

Thank you both for the reply, With respect to the distance it has to travel this will be even less so I'll take it as negligible. As both of you pointed out it's the impact force which I need to take into consideration, and to be honest with you I did think about it, however when going...

Hi all, This is not exactly a homework question, more like for my own safety So I have a project going on and I need to use an angle grinder without the safety guard which will be enclosed in a box (made from plastic most probably). So I decided to check if the plastic box would be able to...