One of the best tutorials on KZread for anything! Thanks so much for the help

OMG, you have just saved me! I am doing a Lab Report and had no idea how to plot the 0.2% offset, now it makes so much sense to me, thank you very much!

I was struggling so bad with this, thanks a lot man

Thank you very much, the tutorial was explained in an efficient and concise manner!

You deserve a medal. Well expained

Thank you so much for this video. My prof asked me to plot this graph and I have no idea how to do it. Thank god for such channels to educate us on how to do it.

A quicker solution is, once you set up your 0.2% offset line, add a linear trendline, and once the trendline format window pops up, go on forward forecast and play around with it a bit so it extended your line as much as you want. You can then see where the linear line and stress vs strain plot intersect

My dude you are a life saver

This really helped with one of my engineering material assignments! Thank you,

Many Thanks! Saved me from cracking my head over the lab report!

@abowden5079

Жыл бұрын

r u qualified engineer now? how much do you earn per year? its been 4 years since you were studying this.

Very well explained. Thanks a ton. Appreciate it!!!

This video is a godsend, thank you

thank you , this really helped me out!

Huge help, so thank you!

Super useful! I generally have software that performs this task but sometimes I have to pull stress and strain data from separate sources and compile it afterwards. This is the most effective method I have found to calculate Young's modulus and yield strength. Thank you!

@ahmedadhamelashwah9899

4 жыл бұрын

What is the name of the software that you use?

@dancartwright2505

4 жыл бұрын

@@ahmedadhamelashwah9899 It is calculated through the software that interfaces with my testing frames. At my lab we primarily use Bluehill.

Doing my assignment thanks to this. really helpful

Thanks mate. Helped a lot.

Thanks for your help, very easy to follow video!!!

youre the man!

Super helpful, thanks!

Great video. Thanks for your help.

Thanks a lot, mate!

That's great and awesome !!!!!!!!!!!!!!

Thanks a lot, master...

thank you!

oh my god. thank you very very very much

That's helpful tnx mate

@Loc Tran, Thanks, nice explanation. I had no idea how this was done on an excel. Would have been more nicer if you were to share the excel file in description to get some hand-on/practice as we learn the tutorial

Thanks❤️

hi. great tutorial. though i find it difficult to construct the intersecting line like you did when using the young modulus times the original strain. when i did that, my graph didn't turn out to be linear.

@LocTran-gp5qd

6 жыл бұрын

You can try using fewer data points.

thanks so much, is there any way to calculate this value without graphic? any formula?

btw i know this video is over 3 years old but you can double click the bottom right corner of the cell to auto fill your formula all the way to the bottom

This was extremely well done. But I have a question....I do not have the Data Analysis option for some reason (currently using Excel 2016), how would I calculate Young's Modulus otherwise?

@LocTran-gp5qd

6 жыл бұрын

Use Trendline You can selected the linear line (the 0.2% offset data) from the chart, click on the top icon popped out from the top right side (called "Chart Elements", looks like a green plus) Select "Trendline", click ">", choose "More options". Choose "Trendline Options". Choose "Linear" and "Display Equation on Chart" On the graph will pop up an equation that is "y=ax+b" your "a" will be the slope or Young's Modulus

How do i allow for adjustment of x and y in edit series when there are no x and y spaces. There is only a series name space and series value space under edit series.

You saved my lab report

Can we use the data of the original curve because you only plus 0.2% to the unitary deformation, and if you compute the pendient of the original data you would have the same result for the Young's Module, I am right?

thnk you but i dont have the analyse bit on my excel

good method. do you also know how to get the value of the 0.2% yield strength from the line you draw?

@LocTran-gp5qd

6 жыл бұрын

I did it the hard way. What I did is I changed the bounds value for the axis for both stress and strain, making the graphs "zoomed" into the intercept. Double-clicks on to the axis value then choose "Axis Options", then change the values for the "Bounds" for Maximum and Minimum. *For Example*: You have the graph with stress from 0 to 100 Pa, and your yield is somewhere around 70 Pa. Change your bounds to 60 =>75 Pa. Then do the same thing for Strain, and keep doing it for better accuracy.

Hello, how can I get summary output from excel 2016... It not shown option data analysis in data... Please help. Thank you

How do you use this line to find the x and y values of the yield point, or the point where the 2 sets of data meet?

@LocTran-gp5qd

5 жыл бұрын

You really cannot exactly find it, but you can estimate it. You can try to "zoom" in to the graph by adjusting the bounds on x and y axis.

hi what if I don't have the "select data" option?

Hi this was helpful video but i really want to know how we determine the exact point of intersection between of set graph and original graph so we can get the actual value of yield strength

@LocTran-gp5qd

4 жыл бұрын

You can't determine the exact intersection since the lines are not continuous, but data points connected together. You can only estimate the value for the yield strength.

Hi, great explanation, but I do not understand why did you do the extrapolation of the linear region of your offset curve using the Young modulus times the "original strain" and not the "offset strain" ? (which I think how it should be because you want to extrapolate that second line so you can intercept the stress-strain curve with that same slope (E)).

@LocTran-gp5qd

4 жыл бұрын

If you use "offset strain", you will not get the parallel line to the "linear region", but a slightly skewed one. You can try and see on Excel.

WHAT ARETHE UNITS?????

Hellow boddy, I want to ask you something about the curve Stress vs Strain; how do you calculate the strain? what is the original length? I can see in your excell formula that you can used DcR2, so I have a doubt about the first values: because the %strain = (length variable in the test - original lenght/original lenght)*100 and for me the first data appear negative until the original lenght of the sample :/ thanks you

@SweatyCam

5 жыл бұрын

Strain = Change in Length / Original Length

Hi, very great tutorial. Sorry for my English, I would like to know if in column G there is the strain in mm or in percentage ? Thanks

@LocTran-gp5qd

6 жыл бұрын

Strain is unit-less

@RuggeroT

6 жыл бұрын

What's mean unit-less ? Wich is the measure unit?

@LocTran-gp5qd

6 жыл бұрын

Strain is measured by (Change in length)/(Original length). So Strain doesn't have a unit

Me gusta

Shouldn't you multiply your original strain value by 0.2% and then add that new value, as opposed to just adding .002?

@LocTran-gp5qd

4 жыл бұрын

If you multiply the original strain by 0.2%, you will simply squeeze the graph into its 0.2% version. (0% ->0% 1% -> 0.002% 10% -> 0.02% 100% -> 0.2%). However, the idea is to SHIFT the elastic region (linear behavior) forward where: (0% -> 0.2% 1% ->1.2% 10% -> 10.2% 100% -> 100.2%) That's why it's called OFFSET line, which will exist a difference between each set of data. In this case , the difference is 0.2%.

please can you give my your excel file please

i couldnt find data analysis

@monicatreacy9170

4 жыл бұрын

It's an add-in that excel has. I followed a tutorial to install it

my excell dun have data analysis. how to do? using 2016 excell.

@LocTran-gp5qd

6 жыл бұрын

You can selected the linear line from the chart, click on the top icon popped out from the top right side (called "Chart Elements", looks like a green plus) Select "Trendline", click ">", choose "More options". Choose "Trendline Options". Choose "Linear" and "Display Equation on Chart" On the graph will pop up an equation that is "y=ax+b" your "a" will be the slope or Young's Modulus

@umarfaruq1637

6 жыл бұрын

i just activate the add-in on the excell setting. thanks btw.

@mozaalserkal145

6 жыл бұрын

howww where do u activate pls

@umarfaruq1637

6 жыл бұрын

Moza Alserkal go to file-options-addins-select analysis toolpak-go-tick analysis toolpak-ok. That should do it 👍

@mozaalserkal145

6 жыл бұрын

THANKYOUU IT WORKEDDD!!

Just a question, sorry if i've got this wrong but wouldn't you need to multiply the stress by 1.002, not add 0.002, becuase you're just adding that 0.002 value to the original stress, not finding the extra 0.2% of the stress?

@LocTran-gp5qd

4 жыл бұрын

We are not finding any extra 0.2%. We are shifting the Elastic (linear) part of the stress-strain graph over to 0.2%. That's why it's called "Offset", which means the difference.

@totallykrazzy

4 жыл бұрын

@@LocTran-gp5qd oh i see, thanks

Why do you just add .002 instead of multiplying it by the whole strain to get .2% of it?

@LocTran-gp5qd

4 жыл бұрын

If you multiply the original strain by 0.2%, you will simply squeeze the graph into its 0.2% version. (0% ->0% 1% -> 0.002% 10% -> 0.02% 100% -> 0.2%). However, the idea is to SHIFT the elastic region (linear behavior) forward where: (0% -> 0.2% 1% ->1.2% 10% -> 10.2% 100% -> 100.2%) That's why it's called OFFSET line, which will exist a difference between each set of data. In this case , the difference is 0.2%.

@Kevin-ls9zs

4 жыл бұрын

Loc Tran I’m saying you would set the offset strain column to the (original strain)+(.002*maxStrain) because of you just add .002 that’s only .2% if the maxStrain is 1?

@LocTran-gp5qd

4 жыл бұрын

@@Kevin-ls9zs Hi, very good question. the 0.2% offset here is the 0.2% of the original length, not 0.2% of the maximum strain. However, this is the information I gained from preliminary research, so please feel free to add sources if you find any incorrections in my videos. Many thanks

why it is required to draw offset line.

@LocTran-gp5qd

6 жыл бұрын

because for stress-strain graphs of materials such as metals, it's hard to tell where the yield point lies on the curve, so we utilize the 0.2% offset method to determine that. However, in cases for materials such as polymers, it's very easy to tell where the yield point is, so you don't need to draw the offset line.

Hi . Can you provide me your mail id or linkedin id . I'm having a doubt regarding the youngs modulus

@LocTran-gp5qd

4 жыл бұрын

please feel free to drop your question here

@rakesh7220

4 жыл бұрын

I have some images to attach . It won't be possible here. If u can give your mail id, that will be better

@LocTran-gp5qd

4 жыл бұрын

@@rakesh7220 please send it forward at loctrancg96@gmail.com

@rakesh7220

4 жыл бұрын

Sent. Please check yout mail. Thank you