Upgrading of an Ultrasonic Fatigue Testing Machine by Means of Early Stage Damage Detection
Upgrading of an Ultrasonic Fatigue Testing Machine by Means of Early Stage Damage Detection
复制标题
通过早期损伤检测升级超声波疲劳试验机
DOI：
10.3139/120.110409
复制
发表时间：
2013
影响因子：
2.5
通讯作者：
T. Beck
中科院分区：
文献类型：
--
作者：
S. Kovacs;S. Stille;Daniel Ernstes;T. Beck
Abstract This contribution highlights the implementation of different methods for early stage damage detection in very high cycle fatigue (VHCF) experiments by means of an ultrasonic testing machine developed by BOKU in Vienna. Basically three different methods are used for in-situ evaluation of degradation: the analysis of (i) the harmonics, (ii) the development of the resonance frequency, (iii) the damping behaviour of the specimen at the end of each testing pulse. The fatigue experiments and measurements of the relevant parameters are controlled using the software LabView. We demonstrate the sensivity of the different methods on two specimen variants: (i) round samples of the chromium steel X10CrNiMoV12-2-2 and (ii) flat samples of the aluminium alloy Al-2024.
