Recent content by heiroglif

^i see, ok great! thanks

.. hi, thanks for your reply, im just looking for some predictions in kg, if a cast iron disc with diameter 0.3m weighs 4kg, then how would a stainless steel disc of the same size match up to that? also how much extra weight would a ceramic plate added to the cast iron disc give? i...

I have weighed a cast iron brake disc and got an average reading of roughly 4kg, id like to know how a stainless steel disc would compare with this weight (just roughly) and also, if a ceramic plate was added to the iron disc...any help appreciated...thanks! H

ok...yeah that looks good...thanks for the help

i mean if someone know the actual type of ceramic i could find its thermal K, i know there's different types, so i just want to find the right one... thanks for your reply

Hi id just like some info on the type of ceramic used in car brake discs and where i can find its thermal conductivity K? Thanks!

.. hi, yes I am using the same units, i think ur getting mixed up with the material tho, remember its "cast iron" not regular iron which is roughly 80 W/mK. Cast iron from some web searches is around 55 W/mK.. http://www.engineeringtoolbox.com/thermal-conductivity-d_429.html

Hi all, I remember reading somewhere that Cast iron in general has a uniform thermal conductivity k of approx. 47-55, and this remains the same for a wide range of temperatures, im not sure if this is correct, if anyone has any information on this subject, that would be great, if i could...

In a thermal conductivity table, what does the temperature column represent in respect to the given coefficient "K" ? E.G http://www.engineeringtoolbox.com/thermal-conductivity-metals-d_858.html does it represent the heat capacity of the material?

... :smile: great, ill start modelling using these equations...thats helped me alot, once again, thanks for the quick and informative response! H

... Hi Stingray, thanks for your reply, it did help, especially the equation for heat dissipation... ive been away from the PC this weekend. I just have a few comments, and questions, see if you can help me.. Indeed, the operating range is rarely crossed, yet by using a variety...

... apologies if my writing is unclear. I will elaborate...I'd like to model a brake system using a variation of brake pads and brake discs, and find out how their material properties affect overall braking efficiency. Knowing that, the friction material of the brake pad, and the type of...

Hi, thanks for your quick response... ok... I think mistyped the equation...you are right, so if we take out V, and leave it as dW/dt = F(dS/dt) this should be ok now right? good point, if i use dw/ds, it should still contain time as a factor. im checking it out now...

I have begun modelling a basic braking system in Simulink/Matlab for my final year project. The model is designed from the time force is exerted to the pedal at a particular velocity, to when heat is produced from the frictional force between the brake pad and disc. I have the modelling...

Guys thanks a lot for your replies, its much appreciated, i will study what you have said, and if i have any more issues, will post them here...thanks :)