Hi guys! I am korean student. Now, i'm making custom phone case for my graduate paper. And, i want to test my case's safety by arduino. So i want to measure impulse by arduino. my expriment is drop the phone with phone case and measure impulse. can you help me how to finish this expriment?
You're using the word impulse, but I think we've lost something in translation. What does that word mean to you?
If you want to see how hard the phone hit the ground, then use the accelerometer in the phone.
Impulse = integral of force with respect to time.
Typically people use a fast, high-g accelerometer to measure it, e.g. ADXL375, or maybe even the one in the phone.
The impulse is the same as change in momentum which is completely defined by the mass of the phone and the height its dropped from.
I think you want to measure the force w.r.t. time graph? Or the acceleration w.r.t. time of the phone’s internal accelerometeR?