Ionela PELEA

32-59 EFICIENŢA DIFERIŢILOR ESTIMATORI AI DISIMILARITĂŢII UTILIZAŢI ÎN DETECTAREA DEFECTELOR

Această intrare a fost publicată în 2017 Volumul 32 și etichetată Gilbert Rainer GILLICH Ionela PELEA Nicoleta GILLICH la de

THE EFFICIENCY OF SEVERAL DISSIMILARITY ESTIMATORS USED IN DAMAGE DETECTION

 

This paper deals with damage detection methods based on interpreting the results of vibration measurement. We briefly described an own method for damage evaluation, which takes into account a large number of frequencies achieved from weak axis bending modes. This allows the precise location of the defect location. We represented two histogram types, one with measurements and several resulted from calculations for possible damage scenarios. The damage location was determined with three estimators, among those the best results being attained with the Minkowski distance.

 

Keywords: damage, severity assessment, natural frequencies, vibration

Cuvinte cheie: defecte, evaluarea severității, frecvenţe naturale, vibraţii

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30-18 CERCETĂRI EXPERIMENTALE DE EROZIUNE CAVITAŢIONALĂ PE UN OŢEL ALIAT DE ÎMBUNĂTĂŢIRE CU UN CONŢINUT DE 97,2 % FIER

Această intrare a fost publicată în 2016 Volumul 30 și etichetată Adrian PELLAC Diana MICLIUC Ionela PELEA Lidia NEDELONI Luminiţa HAŢIEGAN Sorin-Laurenţiu BOGDAN la de

CAVITATION EROSION EXPERIMENTAL RESEARCH ON AN
IMPROVEMENT ALLOY STEEL WITH 97.2% IRON CONTENT
This paper presents the cavitation erosion experimental research on an
improvement alloy steel. The chemical compositions, also the name of this steel,
were identified using a spectrometer. After this analysis, iron content was 97.2 %
and the name of this steel has been identified as 41Cr4. The results are in tabular,
by graphic, as well as images and macrostructures presented and compared.
Keywords: cavitation erosion, 97,2 % Fe, macrostructure
Cuvinte cheie: eroziune cavitaţională, 97,2 % Fe, macrostructura

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