20.500.12556/DiRROS-27523 Force signal alignment in dynamic testing machine calibration applications Calibration of force in measuring systems where the force is time dependent i.e. dynamically changing, introduces additional complexities versus quasi-static calibration conditions. Time variable force signals necessitate accurate time alignment between concurrent signals – measurement series from unit under test and the measurement series from the reference standard need to be synchronised. Different unsynchronised measuring systems are typically used for acquisition of each calibration signal and they need to be time aligned in post- processing to eliminate as much as possible the influence of the sample misalignment from the resulting testing machine indication error. The paper focuses on the time synchronization of measurement series by using cross-correlation to determine the necessary time correction when calibrating testing machines with dynamic cyclic force excitation. Measurements are presented for calibration signals in the examples of 20 kN testing machine compression calibration for 5 kN ± 1 kN cycling force with 1 Hz, 5 Hz, and 10 Hz cycling frequencies, and 1000 kN testing machine tensile calibration for 500 kN ± 100 kN cycling force with 1 Hz cycling frequency. The standard deviation of the error distribution after time correction and clock rate compensation was below 0.2 % for both, 20 kN testing machine calibration, and 1000 kN testing machine calibration. calibration dynamic testing systems time-synchronization cross-correlation kalibraicja dinamični preskusni sistemi časovna sinhronizacija križan korelacija true false true Elsevier Angleški jezik Slovenski jezik © 2025 Slovenian National Building and Civil Engeneering Institute (ZAG) Neznano 2026-02-11 07:41:04 2026-02-11 07:57:27 2026-02-12 03:52:51 0000-00-00 00:00:00 2026 0 0 str. 1-11 pt. A, [article no.] 119070 Vol. 258 Jan. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-09-20 544.5/.6 1873-412X 10.1016/j.measurement.2025.119070 267418371 https://doi.org/10.1016/j.measurement.2025.119070 0 a46c1e11-0714-11f1-bcbc-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=40303 RAZ_Hiti_Miha_2026.pdf RAZ_Hiti_Miha_2026.pdf 1 44368DB94C947995B5E891DAE37757BC 6711639caa775d5af856087fd64fe2df4d1295708d078585d706fe68f50f54c7 bcb11f08-0716-11f1-bcbc-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=40304 Zavod za gradbeništvo Slovenije 0 0 0