PECEN J., HAVRLAND B., KREPL V.
Abstract
The article describes efforts at the detection of some properties of barley kernels by impact analysis.
Impact of kernels was realized as uniformly accelerated motion (free fall) of kernels onto a force transducer
from height of approximately 21cm. The record of the impact parameters (time and force mainly) was captured
and stored by the Digital Storage Oscilloscope (DSO) for subsequent processing. The experimental apparatus is
described in detail. The shapes of the impact records of barley kernels were different and depended on the kernel size,
its humidity and variety and on the position of acting impact mainly. The repeated impact (with the same kernel
onto the same place) brings very similar shapes of impact records in all cases as shown in the captured impact records.
The small differeces in these shapes, in the repeated impact, is caused mainly by non central orientation of kernel
acting onto the force transducer (at the end of kernel falling).
Key words:
repeated impact, impact record, barley kernel, quartz force transducer, oscilloscope