The Ingenious Design of Strain Gauges 

What are some other interesting strain gauge applications? If you're interesting in the companion video on load cells you can check it out on Nebula at this link: nebula.tv/videos/the-efficient-engineer-how-do-load-cells-work

If this guy produces 3000 hours of content this channel will effectively replace need for mechanical engineering colleges

This is gold! You're one of the few RU-vidrs who has not once compromised on quality. Your videos have taught me a lot and have ignited my passion for studying and working in engineering.

This is probably the best concise explanation I can send to people about what I do. However, there is one thing that is wrong. Passive temperature compensation is what is described as "active" by using a second gage in the half bridge. ACTIVE is measuring and compensation through thermal calibration, EG you actively have to do something such as math such as read a temperature sensor (RTD, thermistor, etc) then calculate the new impact. When it's just one, we tend to say it's uncompensated and NOT passive. There are all extreme temperature cases where you'd select a different STC code than for the underlying material as you might be in a different area of the curve and can get better performance in high temp or cyro applications.

Fantastic quality as always, i love that you never compromise on quality and uploads your videos when they are done and up to your high standards!

This time I have to leave a comment. Today I was discussing with a colleague how principle strains from my simulation can be compared to our future experiments. And then you upload this video… Thank you 🙏🏼 😊

You do a really great job of presenting new information and then pacing things to let the viewer guess ahead at the next step, and it makes your videos really enjoyable. For example, I loved the way you showed the multiple gauge bridge configurations first, raising the question “why would you do that?”, then moved on to talking about thermal expansion, and gave me just enough time to excitedly shout “oh you could put one on an unstrained reference material!” at the screen.

thank you guys for putting the effort out to produce such quality content, this is my second year in ME and I see a long future for me in this channel. Keep up the good work

Great video as always! Merci!

absolutely wonderful video! I hope to see more!

Fun fact, wheatstone bridge is also used for temperature measuring, but thermistor Is placed instead of gauge.

I was desperately waiting for the new video.

Would be cool if you could cover different ndt methods used for different material. A bit more on the niche side of mechanical engineering but equally important

brilliant video thanks for all your work, your ability to unpack complex subjects is unparalleled

excellent content, very informative and very simply explained

There seem to be two people that invented the strain gauge at essentially the same time, Arthur Ruge and Edward Simmons. Simmons had a lengthy legal fight with Caltech over the patent rights. Simmons became a fairly notable eccentric later in life and was a fixture around the Caltech campus.

Great video. I'll be using this as a source for training. Thank you!

Excellent description of strain gages and the Whetstone bridge.

I am wondering what softwares can be used to create these fantastic animations? Congrats for an amazing video!

very good job! thank you very much!

ty - this is sooooo good

Amazing and highly informative video. Thanks for publishing such good content😊

You keep impressing me everytime. good job mate and thank you

I don't know how to thank you for creating and sharing this content. Was very useful.

Very informative 👍👍👍👍

I have used a similar mechanism in one of my projects, very useful

Awesome as always

damn, well done! Looks an awful lot like a device I'm currently making a video about, but luckily it's completely different

Love your work

Very nice video

Congrats on 1M subs! As a mechanical engineering student you're helping me so much :)

love your content

A perfect video.

Great to see that

I love your content. Some remarks: at 0:24, there seems to be intense curvature beyond the supports which I think is wrong. At 13:52 I think that the shear strains (green half-arrows) have the wrong directions.

I love this channel

Congratulations for 1M🎉

Thank you so much for making videos like this. I am going to share this with my boss, who has a PhD in Material Science, so he can understand how I am going to use a strain gauge to compensate for thermal expansion in my experiments...

Keep up the good work! This is a perfect channel for civil students to visualize their study materials. If you ever want to collab, let me know!

Wonderful video! Thanks!

Outstanding content. I am a retired petroleum engineer, but my daughter is a civil engineer/project manager for a pipeline design and build company. I will be giving her a subscription to Nebula.

I use strain sensors as a hobbyist to experiment with measuring impact force, energy, deceleration. With my oscilloscope, I can measure the strain over time, which gives me the duration of the collision, and thus the decelerative G-load on the projectile, for example. And I don't even need an Arduino!

Can you make one on method of characteristics? That'd be great!

Good 👍

Can you please create a video on : industrial hydraulics and pneumatics

Please make video on cfd

hearing the words Mohr’s Circle gave me flashbacks to AE lab like i was back in Nam 😂

highest grade of content right here gents and ladies

A couple 'funny' animations: 0:05 The ends move up and down, a lot, even tho the load is only between the supports. The straight ends should have no curvature outside of the supports. 4:36 Wow, that copper stretches a LOT, like 300%, and then goes right back to its original shape. That doesn't work for many reasons, not the least of which is simple conservation of mass, the rod's diameter never changes while expanding in volume 3 times.

Can you please attach some study materials in all of your videos? Already your videos are top notch. Including that factor will complement the video and guide the viewer for a comprehensive learning.

I use to see one of the inventors of the strain gauge, Edward Simmons, rummaging in the electronics part stores (when they still existed) in Pasadena, CA, from the 1970s thru 1990s. He was a bit eccentric, but all the other old timers that engage with him, did it with much respect. He made a fortune, but not from the strain gauge, but investments in oil companies.

Is there any recommended manufacturer for purchasing strain gauges? Many thanks!

Please upload frequently I am waiting for your videos 🥲🥲

So, how do they measure the strain that the strain gauge measures?

📝 Summary of Key Points: 📌 Strain gauges are crucial tools in engineering for measuring how objects deform under loading, aiding in structural integrity monitoring and performance optimization. 🧐 The electrical resistance strain gauge is a common design that measures strain by detecting changes in electrical resistance as the object deforms, with materials like Constantan being popular due to stability over temperature. 🚀 Wheatstone bridge circuits are used to accurately measure small changes in resistance of strain gauges, enabling precise strain calculations and monitoring. 💡 Additional Insights and Observations: 💬 "Understanding the basic concept of strain is crucial for appreciating how these devices work." 📊 Gauge factors and material properties play a significant role in determining the sensitivity and accuracy of strain gauges. 🌐 Temperature compensation methods like active and self-compensation are essential to mitigate errors due to thermal expansion. 📣 Concluding Remarks: Strain gauges are versatile devices that play a vital role in engineering applications, offering precise measurements of strain and enabling detailed analysis of structural behavior. Understanding their principles and applications is key to ensuring the reliability and efficiency of various mechanical systems. Generated using TalkBud

Here is a fun fact to know and tell. If you take a strain gauge, and wire it to a capacitor bank, and then, after charging the capacitor bank, you dump this current onto the strain gauge, the strain gauge behaves like an exploding bridge wire detonator (EBWD).

Excellent! But what is a micro strain(in this context it is a unit of measure??)??

How they bond it to the metal?

Excellent!

Thanky you❤

great vid!

Great explanation as always, please remember to create content and upload 😅

Just i want to study, thanks!

Strain gauges and strain rossets are they same ?

Does a strain gauge have a built in memory for analysis later?

0:00 I did that in a lab today!!!

Wasn't this channel called real engineering or something?

ATIVA A FAIXA DE AUDIO. POR FAVOR

hmm so as an EE i highly doubt that wheatstone bridges are used for anything strain gauge when you can have a constant current source and a differential amplifier to measure the voltage across it and divide by the fixed current source for the resistance measurement

Banks use strain gauges in the building process of vaults

@ 4:38 the red lead for the multimeter is in the wrong place 😆

did someone say FULL BRIDGE REC----- oh sorry wrong full bridge

One video for unite conversation SI unit change

For concrete . can we use guges like this ? lvdt are better for concrete , am i right ?

I assume those devices take into account change of material due to change in temperature.

I should have paid you the tuition fee of my engineering college

0:27 cable stayed bridge with piers on the main span --> not efficient! God damn I came here looking for efficiency and this is what I get...

Didn't cover the full bridge.

Oh come on, do you really expect us to believe that strain gauges are real?

Is the narrator the gaming historian?

Bruh the multimeter lead is in current socket not ohms lmao

This video was uploaded too late 😢

..👍

nothing new for people already involved in weighing. Wheatstone bridge circuit is employed No electrical. Just pure electronics required. Easy said in theory, in practical a lot of factors must be considered. 😅😅

TOO LONG TO CREATE NEW VIDEOX

2021-Civ-325

Guys your videos are amazing but please… the music is so annoying it’s like you’re in a romantic date