Ratcheting tests have been performed on Inconel 718 at 649°C for uniaxial loading, torsional loading and a few paths of axial-torsional loading. Ratcheting strain was measured to near failure cycles. The equivalent ratcheting strain is examined for different loading paths. Ratcheting strain is found to increase with cycles in the manner similar to the creep strain under static load, exhibiting steady-state behavior for much of the lifetime. The ratcheting rate depends greatly on the loading path, stress amplitude and mean stress as fatigue life does. Ratcheting rates are found higher for circular paths than for linear paths. The ratcheting strain at failure may be estimated from the steady-state ratcheting rate and cycles to failure for most test cases.
Skip Nav Destination
ASME 2008 Pressure Vessels and Piping Conference
July 27–31, 2008
Chicago, Illinois, USA
Conference Sponsors:
- Pressure Vessels and Piping
ISBN:
978-0-7918-4824-1
PROCEEDINGS PAPER
Ratcheting of Inconel 718 at 649°C Under Axial/Torsional Loading Available to Purchase
Kwang Soo Kim,
Kwang Soo Kim
Pohang University of Science and Technology, Pohang, South Korea
Search for other works by this author on:
Hyo Shin Kim
Hyo Shin Kim
Pohang University of Science and Technology, Pohang, South Korea
Search for other works by this author on:
Kwang Soo Kim
Pohang University of Science and Technology, Pohang, South Korea
Hyo Shin Kim
Pohang University of Science and Technology, Pohang, South Korea
Paper No:
PVP2008-61323, pp. 805-810; 6 pages
Published Online:
July 24, 2009
Citation
Kim, KS, & Kim, HS. "Ratcheting of Inconel 718 at 649°C Under Axial/Torsional Loading." Proceedings of the ASME 2008 Pressure Vessels and Piping Conference. Volume 1: Codes and Standards. Chicago, Illinois, USA. July 27–31, 2008. pp. 805-810. ASME. https://doi.org/10.1115/PVP2008-61323
Download citation file:
19
Views
Related Proceedings Papers
Related Articles
A State-of-the-Art Review of Fatigue Life Prediction Models for Solder Joint
J. Electron. Packag (December,2019)
Damage Rate is a Predictor of Fatigue Life and Creep Strain Rate in Tensile Fatigue of Human Cortical Bone Samples
J Biomech Eng (April,2005)
The Creep-Fatigue Interaction in Solders and Solder Joints
J. Electron. Packag (June,1990)
Related Chapters
Fatigue of Composite Materials—Damage Model and Life Prediction
Composite Materials: Fatigue and Fracture, Second Volume
New Guidelines on Assessing the Risk of Fatigue Failure and Remaining Life of Ageing Pressure Vessels:
Ageing and Life Extension of Offshore Facilities
Cyclic Deformation and Failure of Polymers
Cyclic Stress-Strain Behavior—Analysis, Experimentation, and Failure Prediction