Abstract
The National Agriculture and Food Research Organization’s Bio-oriented Technology Research Advancement Institution performs safety testing of agricultural machinery, including the portable brus-cutter in question. We checked the strength of the cutting attachment guard and blade as defined in the ISO standards for ensuring safety. Conventional safety tests do not include protective performance. We therefore conducted an ISO Thrown-Objects Test. The ceramic test pieces did not scatter as expected for certain types of blades. We therefore considered revising the dimensional requirements of the cutting attachment guard, and developed a device to evaluate thrown items.
