I have been performing a simple drop test on a load cell using a golf ball, recording the impact using a Phantom camera as well as collecting the data from the load cell.
The problem arises when you compare the 2 time measurements for the impact of the golf ball on the load cell plate. The phantom camera gives an impact time of approximately 0.65ms whereas the load cell reading from start to end gives a much greater reading (approximately 0.85ms) as seen in the picture - also the 2 gradients from start to peak and from peak to end differ significantly, which we know is not true during a golf ball impact.
- How do you explain the time readings being different?
- How I could go about getting a more accurate value from the load cell that matches the phantom camera?
I have also been calculating the impulse of the impact and comparing it to the area under the graph on the load cell readings to check that the force readings are correct, however I cannot determine if they are right - most likely due to the time reading being wrong.