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1.
Analysis of loading profile effect on testing machine calibration results
Miha Hiti, 2021, izvirni znanstveni članek

Povzetek: The paper presents an evaluation of the loading profile effect on the testing machine calibration. First, a 20 kN force transducer was calibrated in a force calibration machine. This transducer was then used for a number of calibration runs in a 600 kN material testing machine where the time step interval of the same loading profile was varied from 120 s to 0 s. Results show good agreement for most of the range but highlight an increasing error due to synchronization and filtering issues in measured signals when approaching very short step intervals and continuous loading.
Ključne besede: force calibration, loading profile, measurement uncertainty, continuous loading
Objavljeno v DiRROS: 20.12.2023; Ogledov: 165; Prenosov: 95
.pdf Celotno besedilo (4,42 MB)
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2.
Compensation of synchronization error effect in testing machine calibration
Miha Hiti, 2021, izvirni znanstveni članek

Povzetek: The paper presents an evaluation of synchronization issues when performing material testing machine calibration using continuous loading. A procedure for the compensation of a rangewide error in calibrated force values is proposed based on a correction factor determined from static and transient errors difference at a chosen force step. The procedure was applied for a calibration of a testing machine with a 20 kN force transducer and 200 N/s to 2000 N/s loading rates. The results show good performance of the compensation technique, reducing calibration errors to below 1% in non-synchronized signals even under unknown filter and delay setting.
Ključne besede: force calibration, loading profile, measurement uncertainty, continuous loading
Objavljeno v DiRROS: 20.12.2023; Ogledov: 153; Prenosov: 79
.pdf Celotno besedilo (5,97 MB)
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