Development of in-situ fatigue crack observing system for rotating bending fatigue testing machine
Journal Title: Frattura ed Integrità Strutturale - Year 2016, Vol 10, Issue 35
Abstract
To substitute for a traditional replication technique, an in-situ fatigue crack observing system for rotating bending testing machine has been newly developed. For verifying performance of this observing system, fatigue tests were carried out by using fatigue specimen having a small artificial defect. It is proved that this system can be detect a small fatigue crack and its propagation behavior.
Authors and Affiliations
B. Lian, A. Ueno, T. Iwashita
Keywords
Related Articles
- EP ID EP138480
- DOI 10.3221/IGF-ESIS.35.44
- Views 55
- Downloads 0
Deformation and fatigue behaviors of carburized automotive gear steel and predictions
The fatigue behavior of carburized components such as automotive transmission gears is very complex due to hardness and microstructure difference, residual stresses and multi-axial stress states developed bet...
Interaction of shear and normal stresses in multiaxial fatigue damage analysis
Due to the abundance of engineering components subjected to complex multiaxial loading histories, being able to accurately estimate fatigue damage under multiaxial stress states is a fundamental step in many...
Multi-scale crack closure measurements with digital image correlation on Haynes 230
An experimental campaign was developed to study fatigue crack growth in Haynes 230, a Ni-based superalloy. The effects of crack closure were investigated with digital image correlation, by applying two different...
Can Keff be assumed as the driving force for fatigue crack growth?
This work raises some new questions about the validity of blindly assuming that Elber’s effective stress intensity factor is the actual fatigue crack driving force, and that as so it can be used to explain all loa...
Effect of nonlinearity of restrainer and supports on the elasto-plastic seismic response of continuous girder bridge
During an earthquake, the nonlinearity of the bridge structure mainly occurs at the supports, bridge piers and restrainers. When entering nonlinear stage, members of the bridge structure affect the elasto-plastic...