What is Hi Modulus, it's used in rackets right? but what is it?? :confused:

modulus = stress/strain.

it is a measure for stiffness.

Hi Modulus... like you know... Hi Bob or Hi Jane. :D

... okay I didn't get enough sleep and I'm bored to boot :p

yes, I almost thought somebody wanted to know me or something!! (Because some pple spell my nick that way somtimes....)

here is a good quote for your question

"Modulus is nothing but a fancy word for stiffness. It's a measure of how much a material will stretch if you hang a weight from the end of it. If it stretches a lot, it has a low modulus; a little, it has a high (Hi) modulus. That's pulling stiffness. There is also flex or bending stiffness. That's measured by supporting both ends of a material and putting a weight in the middle, and measuring how much it bends. Again, a material that bends very little has a high flex modulus. It's one of those confusing things where a little is a lot, and a lot is a little."

Originally posted by timeless
Hi Modulus... like you know... Hi Bob or Hi Jane. :D

... okay I didn't get enough sleep and I'm bored to boot :p

Modulus says 'hi' to you too. ;)

Hi Modious

Originally posted by modious
yes, I almost thought somebody wanted to know me or something!! (Because some pple spell my nick that way somtimes....)


I agree to this quote, but to add my two cents worth, Modulus = The Constant factor or the ratio. Look it up in the dictionary and you will see the same if not similar explanation. The HI part in the modulus is obvious therefore. So therefore, if the meaning of Modulus is true, then Hi Modulas would most certainly have to mean a higher level of the racquet maintaining it's shape in a smash for example. I'm not telling you that I am 100% right on this. I am just using the laws of physics and throwing in my 2 cents worth. I would stand corrected if I am told otherwise. So this is something that I would like to know more about too. But for now, the truth is in the Oxford English Dictionary folks. I hear that you can have higher stringing tension with this type of racquet. Mine is a Carlton Airblade 2000. Sweet racquet.

By the way, does "Titanium Hi-Modulus Graphite" mean it has both materials?

Great article here.

http://www.racquettech.com/sample_articles/Nov1998/modulus.html

Nice website! It has detail explain about hi modulus graphite. But what abot woven? I have seen some racket made of woven. What is it?

Originally posted by huijun
Nice website! It has detail explain about hi modulus graphite. But what abot woven? I have seen some racket made of woven. What is it?

I believe that woven graphite is where they weave the graphite fibres instead of layering them at 90 degrees. Obviously weaving the fibres takes more effort, hence the higher cost, but based on the article, you can see why they can be stronger than conventional graphite fibres.

From the website, I know that the lay-up is very important in manufacture the racket. They use resin to glue the layers together. And the different layer has differnt angle. But from the picture you post, the woven seem to cut the layers into stripes and weave together ? Would you give me more information.;)

So that's why some rackets are expensive

Originally posted by huijun
From the website, I know that the lay-up is very important in manufacture the racket. They use resin to glue the layers together. And the different layer has differnt angle. But from the picture you post, the woven seem to cut the layers into stripes and weave together ? Would you give me more information.;)

Sorry, I don't know any more. Your guess is as good as mine and it seems that WOVEN graphite also have different classes depending on how they weave the graphites plus the addition of any other materials (e.g. Prince talked about their Triple Threat which consist of copper, titanium & copper).

Originally posted by Winex West Can
(e.g. Prince talked about their Triple Threat which consist of copper, titanium & copper).
I've not heard of copper being used in a titanium mesh before... but I guess that could explain why my ti mesh is gold-coloured. (here: http://badmintonforum.com/vb/showthread.php?s=&threadid=9210) Any idea what copper is supposed to do? Seems like it's just adding weight to the head since copper is neither strong nor stiff.

Originally posted by jsevalle
What is Hi Modulus, it's used in rackets right? but what is it?? :confused:

Hey guys i'm new to this place, and i just got a carlton megagflex f2 raquet, on the frame it says high modulus graphite, i'm just wondering, if this another good raquet that is meant to be for pros, or is it just me??:confused:

Thanks WWC. I used google to search the key word "carbon woven" and I got some results. They cut the carbon into stripes and weave together. The carbon woven also has different quality like 1k,2k,3k and different woven patterns. But for expensive side, I saw the racket made of 100% woven(claimed by the manufacturer) is not as expensive as hi modulus graphite+Ti composite in Taiwan. I look at some cheap rackets and from the frame to the shaft, I can see the carbon woven. But I think maybe just the outside layer is carbon woven not every layers and I only see "hi modulus graphite" printed on the shaft. About 100% woven racket, I think every layers is carbon woven not just outside layer?! I am looking forward your review on SOTX woven 7.......:D

Pardon, but I have one question.

The word 'modulus', does it come from 'modular'?
If it does, then modulus is supposed to mean higher capability to bend, no?

I am still confused. I do remember Young's modulus though : ratio of stress over flex (I think!). The modulus changes depending on the variables supplied. I think Ivan's explaination was about Young's modulus, no?

BTW, the URL up there can't be accessed. Anyone have any other
explaination?

:confused: