YYP135 Ua pili ka Falling Dart Impact Tester i ka hopena hopena a me ke ana ikehu o ka dart haule mai kekahi ki'eki'e e pili ana i nā ki'i'oni'oni a me nā pepa me ka mānoanoa ma lalo o 1mm, e hopena i ka hā'ule 'ana o ka specimen he 50%.
