Results 131 to 140 of about 328 (171)
Some of the next articles are maybe not open access.
Microstructure-sensitive HCF and VHCF simulations
International Journal of Fatigue, 2013Abstract This paper provides some background and historical review of how microstructure-sensitive finite element simulations can play a role in understanding the effects of stress amplitude, R -ratio, and microstructure on fatigue crack formation and early growth at notches, including pores and non-metallic inclusions for Ti alloys and Ni-base ...
Craig P. Przybyla +3 more
openaire +1 more source
Experimental-Numerical Assessment of Critical SIF from VHCF Tests
Key Engineering Materials, 2016The continuous enhancement of reliability and durability requirements for many machinery components is significantly pushing the experimental research on the Very-High-Cycle Fatigue (VHCF) response of metallic materials. In order to significantly reduce testing time, ultrasonic testing machines are widely adopted when carrying out VHCF tests.
HASANI NAJAFABADI, SEYED HUSEIN +4 more
openaire +2 more sources
Fatigue and Fracture Behavior of MMC in the HCF- and VHCF-Regime
Materials Science Forum, 2014Aluminum matrix composites (AMCs) are characterized by improved mechanical properties in comparison to their unreinforced matrix alloys. But the knowledge about the fatigue behavior of AMCs in the HCF-and in the VHCF-regime is limited until now. Due to this AMC225xe and AMC xfine225 with an average SiC particle content of 25 vol.-% and particle sizes ...
Matthias Wolf +2 more
openaire +1 more source
A damage parameter for HCF and VHCF based on hysteretic damping
International Journal of Fatigue, 2014Abstract The fatigue limit of materials, due to the improvement of fatigue life of structures and mechanical components should be extended from the traditional 106–107 cycles up to 109 and more, but with traditional testing hardware this is a difficult technical task due to the length of time needed for the completion of tests.
Lage, Y. +5 more
openaire +2 more sources
Estimating the fatigue behavior of welded joints in the VHCF regime
International Journal of Structural Integrity, 2012PurposeThe present work aims to deal with a very high cycle fatigue (n=109 cycles) of gas metal arc welded joints, subjected to a multiaxial and non‐proportional loading. Different design codes and recommendations can greatly reduce the analysis effort in the design of welded structures providing a suitable balance between computational accuracy and ...
A. Krasovskyy, D. Bachmann
openaire +1 more source
VHCF test and life distribution of aluminum alloy LC4CS
International Journal of Fatigue, 2008Very high cycle fatigue (VHCF) test of 82 aluminum alloy LC4CS specimens was done by piezo-electric fatigue testing machine and fatigue life data were obtained. The obtained fatigue life data showed that the fatigue life distribution of the alloy under VHCF has a characteristic of duplex peak, which is related to the locations of fatigue crack ...
W YAO, S GUO
openaire +1 more source
Crack initiation mechanisms in AA6082 fatigued in the VHCF-regime
International Journal of Fatigue, 2014Abstract Over the last decades research activities in the field of very high cycle fatigue (VHCF) have strongly increased. It has been shown important to distinguish between single phase inclusion free type I and multiphase type II materials. Although, considerable efforts were made, the basic understanding of the dominating deformation/damage ...
J. Bach +3 more
openaire +1 more source
Life time and cyclic slip of copper in the VHCF regime
International Journal of Fatigue, 2007Abstract Studies were performed on the fatigue properties of polycrystalline copper at very low cyclic stress amplitudes and very high numbers of cycles. The experiments were carried out with the time-saving ultrasonic fatigue technique. Thus, experiments up to more than 1010 cycles could be performed within reasonable testing time.
S STANZLTSCHEGG +2 more
openaire +1 more source
Fatigue behaviour of austenitic stainless steels in the VHCF regime
2018The focus of this work lies on the investigation of the fatigue properties of austenitic Cr-Ni steels in the HCF and VHCF regime. This class of steels is characterized by low stacking fault energies which determine the main characteristics of deformation mechanisms (dislocation gliding, phase transformation).
A. Grigorescu +4 more
openaire +1 more source
VHCF-behavior of helical compression springs made of different materials
International Journal of Fatigue, 2011Abstract This paper reports on procedure and preliminary research results of long-term fatigue tests up to a number of 109 cycles on shot peened helical compression springs with two basic dimensions, made of three different spring materials. The corresponding research project was initiated together with a working group of the Association of German ...
B. Kaiser, B. Pyttel, C. Berger
openaire +1 more source