Stress-Strain Relations: Tensile Testing, Yield & Ultimate Strengths, Elastic Modulus, Safety Factor 

I am planning to attend my lectures, watch your videos then do homework. Watching your videos before approaching Homework should really help me reduce hours of time I get lost while trying to solve it.

Hii!! Here a chemEng student from the south of Spain. Thanks to your lecture i really understand material science and love it. Greetings from Spain.

I wish you were our lecturer! So clear, great job. Looking forward for more videos of yours 😃

If all engineering lecturers around the world, especially in the third world country, can explain course material like him, we should be able to colonize Mars by now.

Very, very clear explanation of otherwise difficult concepts to acquire in just a few sessions. Love the modern whiteboard presentation technique. I am a retired computer engineer trying to design prefab affordable housing (called Backyard Cottages in Seattle), using Sketchup-Pro and SkyCiv online stress analysis tools. I think the SkyCiv Section Builder tool is not generating the correct second moment of Inertia for my composite DougFir wood and steel "T" top/bottom cord - beams. Forcing me to check the results using hand calculations of strength characteristics of my funny but useful composite shapes. Your lectures on statics and composite beams ..etc, have helped me understand what I need to do. Your presentations proceed in very logical steps, helped by real world examples to help students like me form a better mental picture. Thanks again. SkyCiv is a very good program, fantastic when my designs use standard shapes in the model, but I think my wood/steel beam sections aren't easily "transformed" into a single material for the FEA calculation engine.

very clear! thanks 🙌

Great video! Thank you, very clear

Much appreciation to your lectures sir

Very clear explanation, Keep it up !!!

That was a great lecture! I really couldn't thank you enough, so glad I found these right before my finals 💚

thank you for the great video

excellent

Good to see you you have maked cool jobs

Do you guys know any channels that can explain as clearly as he does but with calculations? My teacher doesn't do lectures and leaves us to self-learn with virtual labs, I can't figure out how to do modulus of elasticity and percent elongation with their data

Like from my side! Awesome lecture.

Great materials

Sir your content are great. Im a mechanical engineering student, from India, i urge you to please continue to post more mechanical engineering content. Thank you sir

Your lectures are quiet helpful, in the sense it is easy to apply to real world projects. Grateful to your contribution, thanks and looking forward to more. I have a question here regarding the shape of the curve from Force Vs displacement to Stress vs Strain (@ 44:30). Shouldn't the curve change shape for stress since it is per unit area and in the necking region, this would behave differently than total force?

I always said that a teacher needs to have the ability to teach. It is not sufficient to have the knowledge, you need to have the call. Thank you for this great presentation. Do you still teach the online courses and if yes, where we can find them? Off topic: what software is this one used for the presentation?

In your Materials Testing & Characterization section, I think there's a clarity issue between F_applied and F_internal. The curve for F_applied does not look like this during tensile testing.

Hello Sir, Could you please explain the difference between Yield Stress and Tensile Stress. I have been reading many definitions , But still find to get an idea. Thanks

sir, can you recommend the text used for this course. Thank you

hello sir thank u for this lecture i have a Qs at 41:55 when u star to to explain why the curve curve back down i don't get it ; u said the area decreasing that mean the curve should go up and not back down (and we will dealing with a true stress-strain curve).... this is a stress-strain engineering curve that mean we keep divide on the same area that we start with A(o) we do not take the instantaneous area A(t) the curve should always increase since the tension force in a tensile test is always increasing and the cross sectional area of the specimen decreases, which means that the stress is always increasing...that for a true stress strain curve HOPE U CAN ANSWER ME I'M REALLY CONFUSED

I wish you were my instructor Would you please tell me where you are teaching that if there is a possibility I can take a class with you

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