An X-ray based experimental study is presented for determining the overlaps and horizontal density distribution (HDD) in robot-formed wood flakeboard mats. The relationship between overlaps and the X-ray intensity ratio has been developed. The results show that the calibration materials have little effect on the overlaps obtained from X-ray scanning and the estimated overlaps highly agree with those from computer simulations. Robot formed flakeboard mats have higher repeatability with lower deviation in both overlaps distribution and HDD.

A paper prepared from this chapter has been published in the Wood Science and Technology, 33(2): 85-95, 1999.