Stress-Strain Curves in Detail - A Level Physics

This video explains stress-strain curves in more detail for A Level Physics.

In addition to the other video on this topic, this goes into a bit more detail and the four key points you would expect to see on a stress-strain graph for a typical ductile material.

Thanks for watching,

Lewis

This video is recommended for anyone studying A Level Physics in the following exam boards:
AQA
CIE
Edexcel
Edexcel IAL
Eduqas
IB
OCR A
OCR B
WJEC

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[mhamzahrizwan]

Amazing explanation!
Thank you and keep up the good work!

[alevelsdemystified]

Can you please explain what fracture stress is as well?

[mattwhitelock]

Love the videos, very clear explanations.

Not sure if you take requests, but would you be able to do some videos on the "looking inside materials" part of A level physics? I'm on OCR B, the 5th chapter, all about how materials look/behave on the microscopic scale, is extremely confusing - the textbook seems to go into unnecessary detail and makes it confusing by overcomplicating, and the CGP revision guide barely touches the subject.

The concepts I find confusing - Dislocations, alloying, crystalline/polycrystalline materials, stress concentration, crack propagation, toughness vs strength, directional vs non-directional bonds, necking, etc.

It's hard to find stuff on these topics on youtube, so perhaps something other people would like covering too - I know most of my class finds these topics very confusing. Thanks.

[nobleofftrack]

Dam it my test was yesterday. But still a great video. 😀

[mattwhitelock]

Also, at 1:19 you mention how after the limit of proportionality we begin to see elastic behaviour. But doesn't the material also behave elastically in the region of proportionality? I thought it behaved elastically all the way up until the elastic limit, and then behaved plastically all after that.

[the_hasnat]

Is the area underneatht the whole graph energy per unit volume or is it only where they are proportional.

[sambowater]

Why is there a little flick up at the end just before UTS?

[sporech]

What is given by the area underneath the stress/strain graph?

[kanavkapoor]

Are UTS and "Breaking Stress" the same thing?

[ibadalvi]

why are your year 13 material all requiring for pay?

[BliiiiBlaaaaBluuuub]

do we need to know graphs for different materials?

[joshplayz]

This is not quite right, the Yield point and Elastic limit are actually the same point on a stress strain graph.