Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics (98%). Paraffin oil lubrication. Specimen set #30 - #31. - Open Research Data - Bridge of Knowledge

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Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics (98%). Paraffin oil lubrication. Specimen set #30 - #31.

Description

Specimen running-in procedure. Preparation to sliding friction tests in ring-on-ring contact. Sintered alumina ceramics (98%) in self-mated contact. Lubrication: paraffin oil. Sliding velocity: 0.2 m/s. Mean contact stress: 10 MPa. Test rig: PT-3 Tribometer. Specimen set #30 (upper, rotating), #31 (lower, non-rotating)
CZ_PRZYS.MAT - accelerometer
MOM_TAR.MAT - friction torque
OBCI.MAT - normal force (load), signal feed from hydraulic load system
PR_OBR.MAT - rotational velocity, signal feed from motor driving the spindle via poly-V belt transmission
SI_MEMB.MAT - normal force (load), signal feed from sensor built into non-rotational specimen (lower) holder
TACHO.MAT - rotational velocity, signal feed from tacho-generator coupled directly to spindle turning the rotational specimen (upper)
TEMPER.MAT - lubricant temperature in bulk volume
TMP_PR.MAT - temperature in direct vicinity of frictional contact

Each data sub-set in a batch contains metadata on sampling frequency, physical units, calibration function (raw data to physical units conversion). See below example, representative to all the data vectors:
cz_si_memb - sampling frequency in channel 'SI_MEMB',
jend_si_memb - physical unit in channel 'SI_MEMB',
fun_si_memb - calibration function (digital raw data to physical unit conversin function) in channel 'SI_MEMB',
The actual measured signal (raw digital data) is stored in vector 'si_memb',
The prefixes in metadata strings (e.g. cz_, jedn_, fun_) are repeatable in every sub-set.

Dataset file

RunIn30_31.rar
91.2 kB, S3 ETag bcf64d1cfafc1694d00eff288a09d07c-1, downloads: 30
The file hash is calculated from the formula
hexmd5(md5(part1)+md5(part2)+...)-{parts_count} where a single part of the file is 512 MB in size.

Example script for calculation:
https://github.com/antespi/s3md5

File details

License:
Creative Commons: by-nc 4.0 open in new tab
CC BY-NC
Non-commercial
Software:
Matlab

Details

Year of publication:
2021
Verification date:
2021-04-30
Dataset language:
English
Fields of science:
  • mechanical engineering (Engineering and Technology)
  • materials engineering (Engineering and Technology)
DOI:
DOI ID 10.34808/9kpc-h138 open in new tab
Series:
Verified by:
Gdańsk University of Technology

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