Cutting force data at different cutting depth to cut spacing ratios using a conical pick

This data was obtained by cutting 2 rocks samples at different cutting parameters using a conical pick. Namely UG2 reef and white sandstone samples. The cuts were made using a linear cutting machine.
In the tests the cutting depth, the cut spacing and the skew angle were changed. The tests were performed at cutting depths of 2 mm and 4 mm. The cut spacing was changed so that the cut spacing to cutting depth ratio was 1,2,3,4,5 and 6. The skew angle was changed from −10◦, 0◦ and 10◦. The attack angle was kept constant at 50◦. The cutting speed was the same for all the tests at 50 mm/s and sampling rate of 300 Hz was used for all the tests, for the strain gauge measurements. A cutting sequence consisted out of firstly pre-cutting the surface to simulate a rock face and then nineteen cuts. The first cut was an initial cut then three of each ratio was cut starting at a ratio one to six. After each cut the cut material was collected and weighed. The weighed mass and the density of the material were used to determine the specific energy.
The uploaded files show the results of these cutting experiments.