Abstract
External quality control in the form of interlaboratory comparisons (ILCs) is an important criterion of the testing laboratory competence. The study was aimed to summarize the approaches to developing objects for proficiency testing (OPT) based on physical simulation of acoustic noise sources, airborne ultrasound, vibration, and the practice of their use for ILC. Analysis of the OPT effectiveness based on physical simulation of factors, the test benches (TBs), was performed based on their testing and certification results, as well as on the results of appropriate ILCs. The results of using TB as OPT are considered for the following factors: acoustic noise, airborne ultrasound, and vibration. When measuring acoustic noise, TB played back the acoustic noise record with high stability. ILC involving measurement of airborne ultrasound was performed the same way, however, the frequency of the acoustic signal being reproduced was in the range of 11–22 kHz. TBs, based on a manual mechanized tool and a platform equipped with electromechanical agitator, were developed for ILC involving the measurement of local and general vibration. Stability of vibration generated was provided by means of the automated system for maintaining the set level with feedback and proportional integral derivative (PID) controller. When arranging and performing ILCs involving measurement of noise and vibration, a crucial role is played by the methods developed specifically for ILCs, allowing one to take into account all the conditions that affect the measurement results.
Highlights
The study was aimed to summarize the approaches to creation and the practice of using objects for proficiency testing (OPT) based on physical simulation of acoustic noise sources, airborne ultrasound, and vibration for interlaboratory comparisons (ILCs), as well as to assess the effectiveness of using the test benches (TBs) developed as an OPT for ILC with measurement of acoustic noise and vibration
Analysis of the effectiveness of OPTs based on physical simulation of factors, the test benches (TB), was carried out based on the results of TB testing and standardization, as well as the results of ILCs performed with the use of those
The results of using TB as an OPT were treated based on the following factors: – acoustic noise;
Summary
FEATURES OF INTERLABORATORY COMPARISON METHODS WHEN MEASURING VIBROACOUSTIC PARAMETERS. Целью работы было обобщить подходы к созданию объектов для проверки квалификации (ОПК) на основе физических моделей источников акустического шума, воздушного ультразвука, вибрации и их использования для проведения МСИ. The measured OPT parameters stability is controlled by reference laboratory [6] authorized by ILC provider. Such practice of ILCs has been carried out since 2016 within the framework of the PHYSFACTOR-TEST voluntary certification system, as well as by other ILC providers [7, 8]. The presence of OPT with appropriate characteristics is a key requirement to performing ILC using the approach described above Both natural and model objects may be used as OPTs. The model objects’ assessed parameters stability is ensured by specialized test benches (TBs). The study was aimed to summarize the approaches to creation and the practice of using OPT based on physical simulation of acoustic noise sources, airborne ultrasound, and vibration for ILC, as well as to assess the effectiveness of using the TB developed as an OPT for ILC with measurement of acoustic noise and vibration
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