eRocks

The HPB consists of a steel bar (1.2m length) which has a rock sample attached to it. A second bar (6.4m length) is then used to impact the sample. An optical sensor is then used to calculate the speed of the impact bar at the moment of impact. Two strain gauges at either end of the two bars are used to record the longitudinal strain wave that propagates through the bars after impact. The force on that sample can be resolved and a force / time signal can be calculated. Integration of the force / time history to breakage can be used to calculate the total energy imputed into the system.

This entry was posted on Wednesday, January 11th, 2006 at 2:26 pm and is filed under Tomb Of Wisdom. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.