Results 131 to 140 of about 267 (176)
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Fatigue testing of CFRP in the Very High Cycle Fatigue (VHCF) regime at ultrasonic frequencies
Composites Science and Technology, 2015Abstract Carbon fiber reinforced polymers (CFRP) are more and more used for high performance applications such as aircraft structures. These structural components are subjected with more than 108 cycles during their lifetime. At present the fatigue behavior of CFRP and the corresponding failure mechanisms are not sufficiently investigated in the VHCF
Backe, Daniel +2 more
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Materials Science and Engineering: A, 2021
Abstract High cycle and very high cycle fatigue (HCF/VHCF) in a bainite/martensite (B/M) multiphase steel with varying inclusion size and microstructural features was studied using ultrasonic axial cycling test. The fatigue crack initiation was predominantly induced by inclusions in specimens with large inclusion size, whereas fatigue crack initiated
Xiaolu Gui +4 more
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Abstract High cycle and very high cycle fatigue (HCF/VHCF) in a bainite/martensite (B/M) multiphase steel with varying inclusion size and microstructural features was studied using ultrasonic axial cycling test. The fatigue crack initiation was predominantly induced by inclusions in specimens with large inclusion size, whereas fatigue crack initiated
Xiaolu Gui +4 more
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The behavior of short fatigue cracks during Very High Cycle (VHCF) Fatigue of duplex stainless steel
Engineering Fracture Mechanics, 2015Abstract During VHCF loading of duplex steels fatigue damage starts within the softer austenite phase. Depending on the spatial mismatch between the slip systems of neighboring grains, intergranular or transgranular fatigue cracks are initiated. If these cracks can propagate or are blocked depends on the interactions with the local microstructure ...
U. Krupp +9 more
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Cyclic deformation behaviour of railway wheel steels in the very high cycle fatigue (VHCF) regime
International Journal of Fatigue, 2011Abstract In the present contribution, the cyclic deformation behaviour of the railway wheel steels SAE 1050 and SAE 1060 was investigated in the very high cycle fatigue (VHCF) regime using a resonance testing device at a frequency of 200 Hz. The specimens were machined from the area of the ‘limiting-diameter’ of original monobloc-wheels.
V. Wagner +3 more
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How to Deal with Very High Cycle Fatigue (VHCF) Effects in Practical Applications?*
Materials Testing, 2012Abstract Fatigue designing of high-stressed engine components is a key factor for reliable power train systems in automotive industry. In this context load assumptions are very important since this is attended with a pre-designing of important machine elements.
Manfred Bacher-Hoechst, Stephan Issler
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Materials Today: Proceedings, 2016
Abstract Selective laser melting (SLM) is a novel technique in laser additive manufacturing which uses laser energy to melt powder material according to the geometry of the computer aided design (CAD) model provided to the SLM system. The process uses a layer-wise manufacturing process which ensures that the manufactured parts possess good mechanical
S. Siddique +4 more
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Abstract Selective laser melting (SLM) is a novel technique in laser additive manufacturing which uses laser energy to melt powder material according to the geometry of the computer aided design (CAD) model provided to the SLM system. The process uses a layer-wise manufacturing process which ensures that the manufactured parts possess good mechanical
S. Siddique +4 more
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International Journal of Fatigue, 2013
Abstract In the present investigation high-frequency fatigue tests on welded specimens with trimmed surfaces were carried out by means of an ultrasonic fatigue testing system (UFTS). The wave-like distribution of the load amplitude along the longitudinal axis of the UFTS specimens with a maximum in the minimum cross-section (at about the half length)
M. Cremer, M. Zimmermann, H.-J. Christ
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Abstract In the present investigation high-frequency fatigue tests on welded specimens with trimmed surfaces were carried out by means of an ultrasonic fatigue testing system (UFTS). The wave-like distribution of the load amplitude along the longitudinal axis of the UFTS specimens with a maximum in the minimum cross-section (at about the half length)
M. Cremer, M. Zimmermann, H.-J. Christ
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PAMM, 2014
AbstractA microstructural simulation model is proposed which accounts for damage accumulation in shear bands and deformation‐induced martensite formation in a metastable austenitic stainless steel (AISI304). The model is numerically solved using the two‐dimensional (2‐D) boundary element method.
P.‐M. Hilgendorff +4 more
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AbstractA microstructural simulation model is proposed which accounts for damage accumulation in shear bands and deformation‐induced martensite formation in a metastable austenitic stainless steel (AISI304). The model is numerically solved using the two‐dimensional (2‐D) boundary element method.
P.‐M. Hilgendorff +4 more
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International Journal of Fatigue, 2010
Abstract Austenitic–ferritic duplex steels are used for structural applications when high strength in combination with excellent corrosion resistance is required. Many of these applications imply cyclic loading and hence, fatigue damage needs to be considered for dimensioning.
Ulrich Krupp +4 more
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Abstract Austenitic–ferritic duplex steels are used for structural applications when high strength in combination with excellent corrosion resistance is required. Many of these applications imply cyclic loading and hence, fatigue damage needs to be considered for dimensioning.
Ulrich Krupp +4 more
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Materials Science and Engineering: A, 2013
Abstract Many components have to withstand a very high number of loading cycles due to high frequency or long product life. In this regime, the period of fatigue crack initiation and thus the localization of plastic deformation play an important role.
P.-M. Hilgendorff +4 more
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Abstract Many components have to withstand a very high number of loading cycles due to high frequency or long product life. In this regime, the period of fatigue crack initiation and thus the localization of plastic deformation play an important role.
P.-M. Hilgendorff +4 more
openaire +1 more source