How Do You Calculate Pendulum Impact Force in G's?

[Joeg]

I need to run an experiment using a swinging steel ball pendulum to impact diffrent materials to determine impact integrity in g's.
What is the formula for this? In g (x times gravity)
Joe G

 

[russ_watters]

There is no easy way to calculate g forces by that method because it depends on how much the sample deforms during the collision. Usually, such an apparatus is used to find fracture energy.

http://en.wikipedia.org/wiki/Charpy_impact_test

 

[charng]

:

The formula for impact force on a pendulum is F = mgh, where F is the force, m is the mass of the pendulum, g is the acceleration due to gravity (9.8 m/s^2), and h is the height of the pendulum at the point of impact. To convert this force into g's, you would need to divide the force by the weight of the object in question, which is equal to its mass multiplied by the acceleration due to gravity. This would give you the impact force in units of g's.

However, keep in mind that the impact force alone may not accurately determine the impact integrity of a material. Other factors such as the material's elasticity, strength, and ability to absorb energy should also be considered in your experiment. Additionally, the angle and speed of the pendulum swing should be controlled to ensure consistent and accurate results. I recommend consulting with a materials engineer or conducting further research on impact testing methods to ensure the accuracy and reliability of your experiment.