Journal ArticleDOI
High-frequency cyclic testing of welded aluminium alloy joints in the region of very high cycle fatigue (VHCF)
TLDR
In this article, high-frequency fatigue tests on welded specimens with trimmed surfaces were carried out by means of an ultrasonic fatigue testing system (UFTS), where 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) of the sample permits a selective testing of the different weld zones (weld seam, heat-affected zone and base metal).About:
This article is published in International Journal of Fatigue.The article was published on 2013-12-01. It has received 25 citations till now.read more
Citations
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Journal ArticleDOI
Recent developments in ultrasonic fatigue
TL;DR: The recently increased interest in very high cycle fatigue properties of materials has led to extended use and further development of the ultrasonic fatigue testing technique as discussed by the authors, where the high frequency allows collecting lifetime data of up to 1010 cycles and measuring crack propagation rates down to 10−12m per cycle within reasonable testing times.
Journal ArticleDOI
Effect of frequency on very high cycle fatigue behavior of a low strength Cr–Ni–Mo–V steel welded joint
TL;DR: In this article, an axially fully-reversed fatigue test of a low strength CrNi-Mo-V steel welded joint was conducted up to the very high cycle fatigue regime under the frequency of 110 Hz and 20 kHz.
Journal ArticleDOI
Fatigue damage evaluation of low-alloy steel welded joints in fusion zone and heat affected zone based on frequency response changes in gigacycle fatigue
TL;DR: In this article, a nonlinear fatigue model based on natural frequency changes was developed, which described fatigue damage for heat affected zone (HAZ) and fusion zone (FZ) specimens successfully.
Journal ArticleDOI
Correlation between micro-mechanical property and very high cycle fatigue (VHCF) crack initiation in friction stir welds of 7050 aluminum alloy
TL;DR: In this article, the S-N curves at very high cycle fatigue (VHCF) regime for the base material and the friction stir welding (FSW) joint of 7050 aluminum alloy present multi-stage shapes with an inflection point at about 108 cycles in the study.
Journal ArticleDOI
Fatigue behavior and mechanism of FV520B-I welding seams in a very high cycle regime
TL;DR: In this article, the fatigue properties of FV520B-I welding seams with different surface roughness up to 10 9 cycles were tested, and the fatigue behavior and mechanism in a very high cycle regime were studied.
References
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Metal fatigue : effects of small defects and nonmetallic inclusions
TL;DR: In this paper, the authors studied the effect of hardness HV on fatigue limits of materials containing defects and inclusions, and fatigue limit prediction equations were proposed. But they did not consider the effects of nonmetallic inclusions on fatigue strength.
Journal ArticleDOI
Course of SN-curves especially in the high-cycle fatigue regime with regard to component design and safety
TL;DR: In this paper, material and manufacturing dependent recommendations are given with regard to the course of the SN-curve in the very high-cycle area, where the authors show that a decrease of fatigue strength with increased number of cycles still occurs, even if corrosion or temperature effects are excluded.
Journal ArticleDOI
Fatigue crack growth and threshold measurements at very high frequencies
TL;DR: In this article, a survey of fatigue investigations of metallic materials, composites, metallic glass, and ceramics, determined with the ultrasound method, is presented, emphasizing the influences on dislocation structures, crack initiation, and fatigue crack growth for pure metals and for technical materials.
Journal ArticleDOI
Notch effect on fatigue strength reduction of bearing steel in the very high cycle regime
TL;DR: In this paper, the authors performed ultrasonic fatigue tests with smooth and notched bearing steel of two batches (JIS SUJ2-A and SUJ 2-B) and found that the S-N curves obtained from the smooth specimens were different and both did not show a distinct two-step.