thank you to everyone, very interesting material. I will try to read carefully. Do you think it is difficult to learn alone how installing strain gauges?
I've installed hundreds of strain gauges and have built the electronics to measure from scratch. Not really difficult, but be sure to calibrate whatever you do. My experience has been in dynamic strain monitoring of moving devices such as amusement rides and industrial equipment. Have done low frequency dynamic (bridge structures) as well.
I've used bonded strain gauges, welded strain gauges, and embedded strain gauges...each has its merits and limitations.