Upgrading of an Ultrasonic Fatigue Testing Machine by Means of Early Stage Damage Detection
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Stephan Kovacs
, Sebastian Stille , Daniel Ernstes und Tilmann 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.
Kurzfassung
Dieser Beitrag beschreibt die Implementierung verschiedener Methoden zur frühzeitigen Schädigungsdetektion bei Ultraschall-Ermüdungsversuchen im Bereich sehr hoher Lastspielzahlen (VHCF) durch den Einsatz von Ultraschall-Prüfsysteme, die von BOKU (Wien) entwickelt wurden. Zur in-situ Bewertung der Ermüdungsschädigung werden drei Methoden angewandt: (i) eine Oberwellenanalyse der Probenbeanspruchung, (ii) die Entwicklung der Resonanzfrequenz über der Zykluszahl, (iii) das Dämpfungsverhalten der Proben am Ende jedes Prüfimpulses. Die Ermüdungsversuche sowie die Messungen der relevanten Parameter werden mithilfe der Software LabView gesteuert und ausgewertet. Die Sensitivität der drei untersuchten Methoden wird exemplarisch an zwei technisch relevanten Probensystemen: (i) Rundproben des Chromstahls X10CrNiMoV12-2-2, sowie (ii) Al-2024 Flachproben dargestellt.
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© 2013, Carl Hanser Verlag, München
Artikel in diesem Heft
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Upgrading of an Ultrasonic Fatigue Testing Machine by Means of Early Stage Damage Detection
- Assessment of Fracture Behaviour under Impact Loading with Simultaneous Recording of Acoustic Emission
- Creep Behaviour of NearEquiatomic Nickel-Titanium Wires
- Ferroelektret-Prüfköpfe für die zerstörungsfreie Prüfung mit Luftultraschall
- A Study on Wear Testing of Orthopedic Implant Materials in Simulated Body Fluid
- Low Frequencies for Cardboard Quality Assurance
- A Crack Identification Approach for Beam-Like Structures under Moving Vehicle using Particle Swarm Optimization
- Assessment of the Residual Strength Thresholds of Composite Pressure Receptacles – Criteria for Hydraulic Load Cycle Testing
- Empirical Correlation for Viscoelastic and Viscoplastic Behaviour of Rock Surfaces under Different Normal Stress Conditions
- Electrolytic Recovery of Tin from Waste Lead Frames: Use of Aqueous HCl Leaching Solution as Electrolyte
- Study of p-6P Molecule Growth by In-Situ and Real-Time Spectroscopic Ellipsometry
- Vorschau/Preview
- Vorschau
- Kalender/Calendar
- Kalender
Artikel in diesem Heft
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Upgrading of an Ultrasonic Fatigue Testing Machine by Means of Early Stage Damage Detection
- Assessment of Fracture Behaviour under Impact Loading with Simultaneous Recording of Acoustic Emission
- Creep Behaviour of NearEquiatomic Nickel-Titanium Wires
- Ferroelektret-Prüfköpfe für die zerstörungsfreie Prüfung mit Luftultraschall
- A Study on Wear Testing of Orthopedic Implant Materials in Simulated Body Fluid
- Low Frequencies for Cardboard Quality Assurance
- A Crack Identification Approach for Beam-Like Structures under Moving Vehicle using Particle Swarm Optimization
- Assessment of the Residual Strength Thresholds of Composite Pressure Receptacles – Criteria for Hydraulic Load Cycle Testing
- Empirical Correlation for Viscoelastic and Viscoplastic Behaviour of Rock Surfaces under Different Normal Stress Conditions
- Electrolytic Recovery of Tin from Waste Lead Frames: Use of Aqueous HCl Leaching Solution as Electrolyte
- Study of p-6P Molecule Growth by In-Situ and Real-Time Spectroscopic Ellipsometry
- Vorschau/Preview
- Vorschau
- Kalender/Calendar
- Kalender