Видео

Thank you. For any other information, please write to vijay.dynatec@gmail.com (Phone 9845037894)

Next training program is planned for mid-May. Please contact for more details on vijay.dynatec@gmail.com

The mounting bracket for the transmitter and the battery has to be made well and fastened appropriately so that it withstands vibrations, jerks and bumps. In the experiment done here, the bike was tested on a dynamometer which simulated road conditions, at 100 km/hour speed, without incident.

Tecat make Wiser 4000 system can be used to transmit data from any full bridge. Regards. Pradeep.

Thank you, best regards

@@DynatecIndia sir where can I get a similar telemetry device? From Amazon preferentially

@@josedavidcastilloblanco2437 The Telemetry System is made by Tecat Performance Systems in USA. They have an on-line store : tecatstore.com/ You can procure this system from there, or write to Don Keating, at dkeating@tecatperformance.com. Best regards

I am glad you found the presentation useful. Regards

These are rotating parts of machines. Examples are shafts, crank shafts, drive shafts, clutch, wheels of cars and bikes, bicycle pedals, helicopter blades, windmill turbine blades, aircraft engines, electric motors and generators, etc. Anything that rotates in any type of machine, and you have to measure the torque or strain on it, requires the use of a telemetry system like TECAT.

The strain gage by itself is a very sensitive sensor that gives an output for extremely small change in the dimensions of a part (so small that it is invisible to the eye), and which cannot be measured by any other common measurement tools. However the output of the straingage is also very small, less than 1 microvolt in the above example. In order to measure this output accurately, you need a very sensitive instrument, which is expensive. Please send me details of your application at vijay.dynatec@gmail.com, about the wearable part, so I can advise further, about affordable manufacture.

Thank you for your kind comments. Regards, Vijay (vijay.dynatec@gmail.com)

Thank you for your kind comment. Regards, Vijay (vijay.dynatec@gmail.com)

To watch more videos about strain gage installation please check our official channel: ruclips.net/channel/UCoTPJFJ7vKBBZkdKrTQM33Avideos

Thank you very much for the comment, it is very encouraging for me. I have tried to highlight the important aspects of gage installation - surface preparation, gage bonding, lead wire soldering. I hope your students will benefit from the presentation. Vijay, Dynatec, 130 Palace Cross Road, Bangalore 560020. email: vijay.dynatec@gmail.com

Thank you very much for your kind comments. The straingage performed as I had wanted, the model P3 showed excellent stability and repeatability, so I could demonstrate the high sensitivity possible with a straingage. I have checked the Model P3 and this same gage for over 40 hours of continuous operation, and the zero balance and full load readings repeated exactly every time. Just thought of letting you know. Regards, Vijay (vijay.dynatec@gmail.com)

@@DynatecIndia what is the limit factor? 10? Have you ever tried greater figures?

The instrument which I used, Model P3 of Vishay Micro Measurements, is specified to operate with a gage factor setting from 0.5 to 9.5. I already stretched it by setting the gage factor to 0.212. It still worked. Perhaps there will be instruments with greater sensitivity, and then maybe the limit can be stretched, but I do not have access to such an instrument. I feel that since the straingage output is purely analog, with resolution nearing infinity, the limit factor is the sensitivity of the read-out instrument. It is indeed necessary to use a very high quality straingage, the best adhesives and accessories, and follow the straingage installation process strictly. All the items used in my experiment were the products supplied by Vishay Micro Measurements of USA. Best regards, Vijay ( vijay.dynatec@gmail.com)

@@DynatecIndia thank you for sharing your thoughts! I have the same P3 boxes, but it never occurred to me this kind of usage. Brilliant!

@@eduardoatemdecarvalho5891 , I could show this experiment with confidence because of the nice way the gages, accessories and the instrument performed. Thank you for your kind comments. Vijay

Thank you for your comment. I will be glad to provide more information on this - please contact me on vijay.dynatec@gmail.com

Thank you. Please write to me at vijay.dynatec@gmail.com for any further assistance. Regards

Thank you. Please write to me on vijay.dynatec@gmail.com for any help. Regards

For aluminium and steel components, you should use the procedure shown in my video Straingage installation procedure. The surface preparation is slightly different in this case, but the general bonding procedure is similar. Please review and let me know if you have any further questions, on vijay.dynatec@gmail.com

The same procedure is used for 2 mm gage also. Since the alignment marks on the small gage would be close, care should be taken to align the gage more carefully. Also, the solder tabs of small gages are more sensitive, so thin lead wires such as 134-AWP from Micro Measurements may be used, and more care has to be taken not to overheat the tabs while soldering. Regards

@@DynatecIndia thankyou.👍

Thank you, regards

If all the 4 straingages in a wheatstone bridge are bonded on the same part close to each other, all the gages will react equally to any temperature changes , and in a full bridge configuration we can expect these changes to cancel each other, so the effect on the out put of the bridge is insignificant. This is considered adequate for most stress analysis applications In transducer applications where even small errors are not tolerated, further temperature compensation is carried out by adding small resistance wires made of Balco, which is sensitive to temperature changes, to an individual arm of the bridge to compensate for the temperature change. Adding this resistance in the arm of a bridge will un-balance the bridge, and this unbalance is compensated by adding a similar manganin wire( which is insensitive to temperature changes) in the adjacent arm to remove the offset caused by the Balco wire. Each time a change is made, the part is subjected to temperature changes and tested for adequate compensation, Regards

@@DynatecIndia Very clear and instructive video, my sincere compliments! I have a question about temperature correction: we want to measure the elongation of a rod that is subjected to tension. Applying one strain gauge makes the measurement very sensitive to temperature differences. How should we apply 4 strain gauges on the rod for keeping them on the same temperature? I would say R1 and R3 in axial direction and R2 and R4 in tangential direction but I'm not sure...

@@hugogroeneveld5404 That is correct - R1 and R3 in axial direction, and R2 and R4 in the transverse direction. All the gages will be at the same temperature. However the output of the wheatstone bridge will be 2.6 times , not 4 times the output as from a single gage. This is due to the poisson effect. (Sorry I did not see your comment earlier..)

Thank you for your kind comment. Please see my other video - straingage on glass using AE-10 adhesive, which I feel is a better way for glass. Regards

Thank you for the comment. Please also see :Straingage on Glass with AE-10 adhesive, hope you will find additional information on this topic.