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Gigacycle Fatigue Properties of Bearing Steels
Journal of ASTM International, 2010Abstract The concept of a fatigue limit at 106 cycles that was introduced by Wohler in 1850 seems nowadays to be the wrong magnitude when considering the fatigue life of modern industrial applications such as automotive engines that run typically billions of cycles.
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Analytical Design of Gigacycle Fatigue Specimens for Size Effect Evaluation
Key Engineering Materials, 2013Research activities on gigacycle fatigue properties of materials have recently focused on the influence of specimen size used for ultrasonic fatigue tests. In order to increase the volume of material subjected to the maximum stress (risk volume) a new specimen shape with a Gaussian profile is proposed.
TRIDELLO, ANDREA +3 more
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Development of a Gigacycle Bending Fatigue Test Method
55th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2014A vibration-based bending gigacycle testing methodology is introduced as a means to efficiently assess high cycle fatigue (HCF) performance of vibrating turbine engine components. The gigacycle bending test is a modification to a conventional vibration-based approach which was developed to generate bending load conditions similar to those that would ...
Garrett Kurtz +3 more
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Gigacycle fatigue properties of 1800 MPa class spring steels
Fatigue & Fracture of Engineering Materials & Structures, 2004ABSTRACTFatigue tests up to 108 cycles were carried out for two spring steels (Heats A and D1) and one valve spring steel (Heat F) with tensile strength, σB, of 1720, 1725 and 1764 MPa, respectively. The size and composition of inclusions in Heats Dl and F were controlled.
T. ABE, Y. FURUYA, S. MATSUOKA
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Fatigue Crack Initiation Mechanism of Aluminium Alloy Welded Joint in Gigacycle Fatigue
Applied Mechanics and Materials, 2013Ultrasonic fatigue test was performed on 5052 aluminium alloy welded joint to investigate the very high cycle fatigue properties and the fatigue crack initiation mechanisms with the help of microhardness tester and scanning electron microscope (SEM). The results showed that the hardness of fusion zone was higher that base metal and heat affected zone ...
Chao He +4 more
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The Impact of the Gigacycle Fatigue on Steel Bridges
Key Engineering Materials, 2013Recent studies have proved that there is no fatigue limit for metallic materials; the stress life curve continuously drops even after 107 cycles. However, existing design codes assume that there is a fatigue limit. Therefore, it is important to use appropriate safety factors if existing codes are used for life evaluations.
Chaminda S. Bandara, Ranjith Dissanayake
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Gigacycle fatigue of ultra high density sintered alloy steels
Powder Metallurgy, 2012Sintered steel specimens with density levels of up to 7·6 g cm−3 have been prepared from Cr–Mo and Mo prealloyed powders. The fatigue response has been studied using an ultrasonic resonance testing device that enabled testing up to 109 cycles. It showed that the fatigue endurance strength can be drastically increased by raising the density and that the
Danninger, Herbert +4 more
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Nanocrystalline material with gigacycle fatigue life.
Medical device technology, 2008A processing technology has been developed that can be applied to many different fine wire medical alloys to improve their fatigue properties. This technology has been used to process a low inclusion alloy, 35 cobalt-35 nitinol-20 chromium-10 Molybdenum (ASTM F562 chemistry), hereinafter referred to as System A.
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Gigacycle fatigue of bearing steel
The Proceedings of Design & Systems Conference, 2004Keisuke TANAKA +2 more
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