Hi All,
I am new to this forum. I would like to build something that can measure the tension of tennis strings. I was hoping that someone could help steer me in the direction of the correct type of sensors to achieve this. Effectively I need the measure the force required to move two strings.
Below is an image of a similar production device. It uses a couple of springs that attach to your tennis racquet.
Thanks
They are using a strain gauge configured in a load cell. Imagine turning for example a digital bathroom scale upside down and pushing on it. My read was they center the device on the racquet in the center, press down and take a reading when the strings have given up about 1.0 cm. Looks to me like they use a compression load cell. They refer to the number as dynamic tension but I don't see where they express the results as a common unit of force like Lbs or Kg?
Ron
koolio:
Below is an image of a similar production device. It uses a couple of springs that attach to your tennis racquet.
Well, no, that's not how it works, and...
Ron_Blain:
My read was they center the device on the racquet in the center, press down and take a reading when the strings have given up about 1.0 cm.
...no.
At least, not according to the user manual..."ball impact is simulated with gentle vibration":
Effectively I need the measure the force required to move two strings.
Really, only two?
One approach would be to push (or pull) a tennis ball-shaped object into the center of the racquet and measure and plot the force versus displacement. Force could be measured using a load cell (or a fish scale) and displacement could be measured using an LVDT (or a ruler).
