DOI: 10.34808/qkpt-kp24
title: Wear in reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%). No lubrication (DRY). Specim. set K04

description: Friction and wear tests in ball-on-flat contact. Both specimens made of sintered alumina ceramics (98%) - self-mated contact.Linear reciprocating motion.Lubrication: DRY. Sliding velocity (peak): 0.1 m/s. Load (normal force): 5N. Test rig: TPZ-1 Tribometer.Running time: progressive increments of 10, 15, 30, 60, 180 and 300s. (stored in separate folders).Specimen set K04
Dascription of variables, as supplied in each data folder in the 'Variables description.RTF' file:NAPIECIE.MAT – internal feedback loop control parameterVariable file contents:               Cz_napiecie – sampling frequency at NAPIECIE channel               Jedn_napiecie – physical unit at NAPIECIE channel               Fun_napiecie – raw digital signal to physical unit conversion function at NAPIECIE channel               Napiecie – raw signal at NAPIECIE channel
OBCI.MAT – test load in sliding contact (normal force)Variable file contents:               Cz_obci – sampling frequency at OBCI channel               Jedn_obci – physical unit at OBCI channel               Fun_obci – raw digital signal to physical unit conversion function at OBCI channel               Obci – raw signal at OBCI channel
OD_RA_GO.MAT – friction force control signal at pivot support of fixed specimen (upper) holder assembly; the specimen is attached to a vertical plunger supported in linear roller bearings with dead weight or spring loading mechanismVariable file contents:               Cz_od_ra_go – sampling frequency at OD_RA_GO channel               Jedn_od_ra_go – physical unit at OD_RA_GO channel               Fun_od_ra_go – raw digital signal to physical unit conversion function at OD_RA_GO channel               Od_ra_go – raw signal at OD_RA_GO channel
PRZEM.MAT – displacement of the specimen in reciprocating motion (lower), attached to roller sledge with crank driveVariable file contents:               Cz_przem – sampling frequency at PRZEM channel               Jedn_przem – physical unit at PRZEM channel               Fun_przem – raw digital signal to physical unit conversion function at PRZEM channel               Przem – raw signal at PRZEM channel
SILAT_RD.MAT – friction force measured at flexible support of fixed specimen (upper) holder assemblyVariable file contents:               Cz_silat_rd – sampling frequency at SILAT_RD channel               Jedn_silat_rd – physical unit at SILAT_RD channel               Fun_silat_rd – raw digital signal to physical unit conversion function at SILAT_RD channel               Silat_rd – raw signal at SILAT_RD channel
TMP_KAP.MAT –temperature of the lubricant bathVariable file contents:               Cz_tmp_kap – sampling frequency at TMP_KAP channel               Jedn_tmp_kap – physical unit at TMP_KAP channel               Fun_tmp_kap – raw digital signal to physical unit conversion function at TMP_KAP channel               Tmp_kap – raw signal at TMP_KAP channel
TMP_PROB.MAT –temperature of the specimen in reciprocating motion (lower), attached to roller sledge with crank driveVariable file contents:               Cz_tmp_prob – sampling frequency at TMP_PROB channel               Jedn_tmp_prob – physical unit at TMP_PROB channel               Fun_tmp_prob – raw digital signal to physical unit conversion function at TMP_PROB channel               Tmp_prob – raw signal at TMP_PROB channel
ZUZYCIE.MAT – real time linear wear of the sliding pairVariable file contents:               Cz_zuzycie – sampling frequency at ZUZYCIE channel               Jedn_zuzycie – physical unit at ZUZYCIE channel               Fun_zuzycie – raw digital signal to physical unit conversion function at ZUZYCIE channel               Zuzycie – raw signal at ZUZYCIE channel