Results 1 to 10 of about 321 (170)

VHCF Response of H13 Steels Produced with Different Manufacturing Processes

Procedia Engineering, 2016
AbstractExperimental results have recently shown that failures at stress amplitude below the conventional fatigue limit and at Very High Cycle Fatigue (VHCF) are possible. In case of high-strength steels, VHCF failures generally originate from defects/inclusions present within the material and, consequently, the defect population properties (size and ...
TRIDELLO, ANDREA, PAOLINO, Davide Salvatore, CHIANDUSSI, GIORGIO, ROSSETTO, Massimo   +3 more
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Thickness debit effect of Ni-based single crystal superalloy thin-walled specimens in the VHCF regime based on a vibration fatigue test

Journal of Materials Research and Technology
This paper proposes a novel vibration fatigue testing methodology of thin-walled specimens in the very high cycle fatigue (VHCF) regime, with the lifetime up to 109 cycles. A series of novel thin-walled specimens for the single crystal superalloy DD6 are
Wei Xu, Beichen Zhu, Xin Chen, Yue Zhang, Yuhuai He   +4 more
doaj   +1 more source

Variable Amplitude Fatigue Life in VHCF and Probabilistic Life Predictions

Procedia Engineering, 2015
AbstractFatigue life in the very high cycle fatigue (VHCF) regime for aluminum alloy 7075-T6 in plate form is characterized in constant and variable amplitude loading using unique testing equipment that allows superposition of small amplitude vibrations on top of duty cycles [1].
Arcari, Attilio, Apetre, Nicole, Dowling, Norman, Meischel, Martin, Stanzl-Tschegg, Stefanie, Iyyer, Nagaraja, Phan, Nam   +6 more
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Environment-dependent very high cycle fatigue (VHCF) in metal additive manufacturing (AM): A critical and emerging paradigm

Review of Materials Research
This overview critically instructs the emerging, but less explored, field of environment-dependent very high cycle fatigue (VHCF) in metal additive manufacturing (AM). As AM technologies are increasingly adopted for structural applications, understanding
Meysam Haghshenas
doaj   +1 more source

Microstructure Study on Very High Cycle Fatigue of an Additively Manufactured Aluminium Alloy via Advanced Characterization Methods

Applied Sciences
The engineering application of additively manufactured (AM) metallic materials is quite limited by their fatigue behaviors, which are very inconsistent with that of conventionally wrought or cast ones.
Lu Liu, Shengnan Wang, Gang Li, Yifan Ma
doaj   +1 more source

Energy dissipation in copper during VHCF loading

, 2011
This communication is dedicated to the presentation of an experimental setup developed to estimate the energy dissipated during high cycle fatigue tests (VHCF). VHCF tests are performed at very low stress ranges, generally under the conventional fatigue strength.
Blanche, Antoine, Ranc, Nicolas, Favier, Véronique, Chrysochoos, André   +3 more
openaire   +1 more source

Research Viewpoint on Performance Enhancement for Very-High-Cycle Fatigue of Ti-6Al-4V Alloys via Laser-Based Powder Bed Fusion

Crystals
Additive manufacturing (AM) or 3D printing is a promising industrial technology that enables rapid prototyping of complex configurations. Powder Bed Fusion (PBF) is one of the most popular AM techniques for metallic materials.
Chun Gao, Yang Zhang, Jingjiang Jiang, Rui Fu, Leiming Du, Xiangnan Pan   +5 more
doaj   +1 more source

Variations of VHCF Characteristics by Microstructure of a Spring Steel to UNSM Treatment

한국해양공학회지
The bainitic structure resulting from the austempering of spring steel exhibits high strength and ductility. On the other hand, there appears to be no study on the effects of very high cycle fatigue (VHCF) and ultrasonic nanocrystal surface modification (
Seung-Hoon Nahm, Min-Soo Suh, Chang-Min Suh   +2 more
doaj   +1 more source

VHCF-Verhalten des hochfesten Stahls 100Cr6: Rissinitiierungsmechanismen und Schwellenwerte [PDF]

, 2020
Das Ermüdungsverhalten hochfester Stähle wird durch nichtmetallische Einschlüsse im Werkstoff bestimmt, die unter zyklischer Beanspruchung zu Rissinitiierung führen. Bisher noch nicht vollständig verstandene Ermüdungsvorgänge führen auch noch bei sehr hohen Lastspielzahlen über 10^7 Zyklen zu Versagen (Very high cycle fatigue - VHCF) und somit zum ...
openaire  

Guided bending experiment for the characterisation of CFRP in VHCF-loading

Polymer Testing, 2016
Abstract The effective experimental characterisation of the damage and failure behaviour of polymer based composites under VHCF-loading depends directly on the development of reliable accelerated fatigue test methods. Here, a guided-bending fatigue experiment in forced excitation is proposed.
I. Koch, G. Just, R. Koschichow, U. Hanke, M. Gude   +4 more
openaire   +1 more source