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Carbon Fiber Tensile Test according to ASTM D3039
Carbon fiber composite carbon fiber 200 g/m2 fabric four layers, Huntsman epoxy resin cured 8 hours 80 degrees Celcius,
produced with vacuum infusion,
about 700 MPa tensile strength,
shimadzu universal testing machine.
![โรงเรียนตอนตี 2 โคตรหลอน..!! [โรงเรียนไดเม่]](http://i.ytimg.com/vi/2MAEMwqVYh8/mqdefault.jpg)
Kowalski: "Skipper, these readings are off the charts."
Skipper: "Well then get bigger charts!"
you can literally hear the fibers breaking
wow, I never thought that carbon fiber could hold that much !!
you can tell from the diagram that the material used is not ductile (brittle material)
+Ahmed Muayad yes, u r right
I looked up the ASTM D3039 test and the dimensions are 250mm length, (exposed section is 140mm) by 25mm width, and 3mm thickness.
The thickness is 2.5 mm, not 3, according to the standard.
Hi, I would like to know the thickness of the carbon fiber you used, and what grade is it? Can you give me the information? Thanks.
Couldn't slow it down enough. I wish you would have used a slow motion camera so we could see what happened!
could you please do compression test for polymer composite materials fabricated by additive manufacturing, thanks
I will do it asap. Thanks
why you not make the specimen like dog bone(type i ) the shpe is rectangular? i
Do a Tensile test of 6061 Aluminum 6.35mm x 19.05mm x 152.4mm? If the measurements are off, please specify in the description. THANKS!
You should read ASTM E8 Standard
What did you use to combine test data and the video?
As far as a test request, can you test per ASTM D5379?
What's the dimensions. How many pounds can a tow of 6k carbon fiber lift?
how about the test for stress-strain property perpendicular to fiber direction? Thanks
twill weave
Excuse me, what's the tickness of your coupon?
Very helpful video by the way.
Dear AboutComposites ,
Thank you for sharing this video.I have a question; What should be value of pressure in head of the test machine to hold coupon. Today ve did same test but failure occured in head about 360 MPa. We expected failure to occur at about mid point of coupon as your test.
Thank you...
You are welcome, our test machine is shimazdu ag-x 100kN which has cone shapes holders. When movable head is moving up, cone shape holders compress the end tabs which are using for save coupons damage from holders, according to ASTM D3039 standard.
Good video
thanks
Test on carbon fiber panels with Balsa core material.
Neato.
which grip tab you used at end of specimen to hold it in jaw?
I'm doing a similar experiment and I wish to calculate the theoretical tensile strength and Young's Modulus to compare them with the experimental results, can anyone help me how to calculate them? Thankyou
you should check composite books,
Convert force to stress: Force divided by the cross sectional area.
Convert displacement to strain: Displacement divided by original length
Youngs modulus is the stress divided by the strain
please have a tensile failure test on glass fibre reinforced polymer thanks.
th-cam.com/video/0U-jiQobZeg/w-d-xo.html
th-cam.com/video/ZR3WWbmMmEo/w-d-xo.html
both of them glass fiber composite
it'll probably be worse if that's what you wanna know
Can anyone please tell me the cross section of the carbon fibre in this video ?
And is it 100% carbon fibre ?
carbon fiber and epoxy
Is this unidirectional fiber?
Can anybody tell me where I can find this product or something similar
easycomposites.co.uk
hello @aboutcomposites
i would like to know that how will you test the tensile strength of epoxy used for joining/gluing the FRP (Fiber reinforced polymer) and concrete composite in UTM(ultimate testing machine)
if you have any related video please send me a link
Thanks in advance
th-cam.com/video/_HK8wtvIKuc/w-d-xo.html this is a good video for ASTM D3039
good video but not enough
I didnt test it
@@AboutComposites thanks for your valuable reply but i got the solution.
WHOA
i wonder how many humans it would take to break a carbon fiber rope in a tug of war
it depends on rope diameter. Carbon fiber is not compatible with tug of war, you should chose aramid fiber ( kevlar)
For the bit in the video: 16500 N divided by 300 N per person (typical human)= 55 people.
According to this www.tugofwarropes.com/safetyinformation.html , and the fact that there are no units given, this result would be equivalent to the 1 1/2" Manila rope.
For the thinnest Manila rope (3/4"), 4800 / 300 = 16 people. Considering they request a 80% safety margin, this means only 3,2 people can use the thinnest rope. Not sure where to find 0,2 people though..
So ~16000N and the cross section was 25x3 mm. So the ult. Ten. Str. is 16000/75 = 213MPa?
Isn't that really low?
"about 700 MPa tensile strength"
@@AboutComposites is my calculation wrong? What am I missing?
@@SunilSundar The thickness, it is under 1 mm
@@AboutComposites Oh! Thank you for your help
Does anyone has the stress-strain property for this carbon fibre ?
haha looks elastic until it's not :P but honestly there is separation of the fibers from the matrix so this kind of thing won't necessarily recover. Keep loads reasonable!
hi! Thanks for this very and i should say very informative video. May I just ask, what is the density of CFRP you've used? I think this is fabric type.? Our client is in need of cfrp with minimum 3.6Gpa tensile requirement, unfortunately we cannot resort with that strength using 230 or 300 g/sq.m. cfrp fabrics. Thanks!
+vgt0816 i think you must research intermediate modulus carbon fiber, that value is really high and u can only get with UD fabrics.
Thanks for the reply. From your video, what type of carbon fiber did u use? is it UD fabrics? Can you give me some advice on how to laminate UD fabric samples to achieve higher strength? Thanks!
+vgt0816 Carbon fiber composite 200 g/m2 fabric four layers, huntsman epoxy resin cured 8 hours 80 degrees Celcius, produced with vacuum infusion, about 700 MPa tensile strength. You can highest performance with prepreg and autoclave process.
Great, video, you cold indicate the size of the specimen ?
+Abner Weseley I indicated specimens size according to ASTM D3039 standard
have you done any fatigue test?
no
Can I know the name of instrument,
which is used??
Shimadzu AGXPlus 100 kN
May I ask what the gauge length was?
I did not use extansometer in this test, crosshead displacment value was used for curve
Ah I see, I wanted to calculate the strain with the length, but cannot do so without a reference length
@@ramiawad4524 you can not use crosshead displacement value for strain calculation, you must use extansometer or strain gauge
can u send to me ur e-mail i want to find woven fiberglass and carbon type zig-zag can i found this type . thanx
dog bone is not suitable for continuous reinforced plastics
Why is this? And do you have any papers to support?
You should read ASTM D3039 standard. If you still have a question please don't hesitate to ask me.
Hello, may i know whether did you change the dimensions of the test piece from the dimensions the ASTM standard mentioned which was (250x25x2.5)mm?
Im currently working with a 2x2 Twill carbon fiber reinforcement and i feel a 25cm long piece is too long. Please advice.
You shouldn't change specimen dimensions. Why do u feel 25 cm is long? I tried shorter specimens when i didn't have enough specimen length. The results were similar.
Recommended dimensions were (250 x 25 x 3). Due to mould limitations, my dimensions were ( 125 x 25 x 2) (6 layers). Should it still be good?
What is the Huntsman number of this resin? Thanks.
+Fernando Peixoto LY 1564 - XB 3487
masih aktif kah channel ini ?
saya ingin bertanya hal yang penting.
you can ask me question if you still have
¿What kind of gag used for this test?
gag?
Is the fiber layup +-45?
no twill weave
what is the gauge length you selected there?
if I am remembering correctly it is 200 mm
is it ok if give the gauge length of 160 mm ?
and what ASTM standards did you use?
ASTM D3039
Displacement value which are shown in video is from testing machine, is not from extansometer.
Hey,
es scheint mir als würdest Du Dich zum Thema 3039 gut auskennen und ich hätte diesbezüglich die ein oder andere Frage an Dich. Gibt es eine Möglichkeit Kontakt mit dir aufzunehmen?
hi, ich kann nicht deutsch kennen. you can send me private massage in english please
+AboutComposites I have send you an email. :)
Thank you for your efforts making this test, but seriously i dont understand the point 😅 can you convert it into kilograms? One thing i can understand is that Mm lol
You multiply the force (y axis) by the cross sectional area to get stress, and turn the displacement into strain by dividing by original length (if you're using engineering strain), then plot strain vs stress and find the elastic modulus (slope of plot) of the piece in tension, which I assume would be the ultimate goal of this test.
"about 700 MPa (N/mm2) tensile strength"