Dr. Frank HĂ¤rtig
Dr. Frank HĂ¤rtig is head of the â€śmechanics and acousticsâ€ť division. Having more than 30 years of experience in the field of metrology, HĂ¤rtig also serves on a number of national and international standardization committees. (Bio last updated 2014-08-01 Contact Randy Stott, Managing Editor, with changes.)
Articles by Frank HĂ¤rtig
- First International Involute Gear Comparison (August 2014)
Measurement institutions of seven different countries â€” China, Germany, Japan, Thailand, Ukraine, United Kingdom and the U.S. â€” participated in the implementation of the first international comparison of involute gear measurement standards. The German metrology institute Physikalisch-Technische Bundesanstalt (PTB) was chosen as the pilot laboratory as well as the organizer. Three typical involute gear measurement standards provided by the PTB were deployed for this comparison: a profile, a helix and a pitch measurement standard. In the final analysis, of the results obtained from all participants, the weighted mean was evaluated as reference value for all 28 measured parameters. However, besides the measurement standards, the measured parameters, and, most importantly, some of the comparison results from all participants are anonymously presented. Furthermore, mishandling of the measurement standards as occurred during the comparison will be illustrated.