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Notch effect on fatigue strength reduction of bearing

Very High Cycle Fatigue Properties of Ferritic-Pearlitic

Notch effect on fatigue strength reduction of bearing#0183;Y.Akiniwa,N.Miyamoto,H.Tsuru,and K.Tanaka,Notch Effect on Fatigue Strength Reduction of Bearing Steel in the Very High Cycle Regime,Int.J.Fatigue,2006,28,p 1555-1565 Article Google ScholarVery High Cycle Fatigue Properties of Ferritic-Pearlitic Notch effect on fatigue strength reduction of bearing#0183;Y.Akiniwa,N.Miyamoto,H.Tsuru,and K.Tanaka,Notch Effect on Fatigue Strength Reduction of Bearing Steel in the Very High Cycle Regime,Int.J.Fatigue,2006,28,p 1555-1565 Article Google ScholarTransition of fatigue failure mode of NiCrMo low-alloy Mar 01,2010 Notch effect on fatigue strength reduction of bearing#0183;Y.Akiniwa,N.Miyamoto,H.Tsuru,K.TanakaNotch effect on fatigue strength reduction of bearing steel in the very high cycle regime Int J Fatigue

Strength,Fatigue and Fracture

J.O.Smith,The Effect of Range of Stress on the Fatigue Strength of Metals, Nominal Notch .Nominal mean stress is less than notch mean stress Fatigue strength at 2x10 0 1000 .1500 2000 .2500 .6.cycles,MPa Ultimate Tensile Strength,MPa .2 S S.u FL = SmoothReview on Surface Failure Mode of Metallic Materials in With higher cleanness upgraded steadily,surface failure of metallic materials in very high cycle fatigue (VHCF) regime beyond 107 cycles has been reported one after another.The occurrence of surface crack initiation to failure in VHCF regime is closely related to the following factors (i) surface finishing condition of specimen,i.e.whether some grinding scratches,grooves and cavities Probabilistic Control Volume Method for Evaluating the Notch effect on fatigue strength reduction of bearing steel in the very high cycle regime Ultrasonic fatigue tests were conducted with smooth and notched specimens of a bearing steel of two

Previous123456NextEnhanced Fatigue Strength of Commercially Pure Ti

Fully reversed bending fatigue tests were performed on polished hour-glass specimens of commercially pure titanium grade 1 with three different grain sizes,that were produced by severe plastic deformation (rotary swaging) and subheat treatments,in order to examine the effect of grain size on fatigue.An improvement in fatigue strength was observed,as the polycrystal grain size was refined.On Fatigue Strength Reduction Factor State of the Art It also discusses a recently developed probabilistic method for microstructure-sensitive fatigue notch factor.The probabilistic method provides a very strong physical basis for fatigue strength reduction and associated notch sensitivity; thus it can be used to determine the effect of notches on reduction of fatigue resistance in a way that Notch size effect on inphase multiaxial fatigue life Recently,the notch effect on low cycle multiaxial fatigue assessment has been performed by researchers by bridging the stress gradient with local damage parameters according to critical plane method.9 The multiaxiality effect on notch fatigue life is extended from Susmel and Taylor TCD theory by Liu et al.10 Similarly,SED theory has been

Notch size effect on in Notch effect on fatigue strength reduction of bearing#226; phase multiaxial fatigue life

( = 0 .1mm),the high cycle fatigue strength is not accurate by characterizing the theoretical stress concentration factor K t due to the existing of notch stress gradient.Hence,it is not realistic to estimate the fatigue strength reduction factor K t on the basis of K t and the notch sensitivity index.Notch fatigue performance of DP600 steel under different May 14,2020 Notch effect on fatigue strength reduction of bearing#0183;A huge reduction in notch fatigue life is noticed as compared to fatigue performance on smooth samples due to the existence of stress concentration at the notch root.Notch effect on fatigue strength reduction of bearing Nov 01,2006 Notch effect on fatigue strength reduction of bearing#0183;Notch effect on fatigue strength reduction Fig.22 shows the distribution of the axial stress near the circumferential notch calculated by the finite element method.The microstructural size d 0 of the point stress model was calculated by using the stress distribution and the fatigue strength reduction factor shown in Table 2 .

NOTCHES AND THEIR EFFECTS - eFatigue - eFatigue

(Notch Sensitivity and Fatigue Notch Factor,K f) The effect of the notch in the stress-life approach is taken into account by modifying the unnotched S-Ncurve through the use of the fatigue notch factor,K f.Notched fatigue strength not only depends on the stress concentration factor,but also on other factors such as the notchInfluence of near-surface stress gradients and strength Notch effect on fatigue strength reduction of bearing#0183;[32] Y.Akiniwa,N.Miyamoto,H.Tsuru and K.Tanaka Notch effect on fatigue strength reduction of bearing steel in the very high cycle regime,Int.J.Fatigue,2006,28,15551565.CrossRef Google ScholarInfluence of artificial defects on fatigue strength of Note from fatigue failure analysis considering the existence of EDM surface defect,impact defect will cause the reduction of fatigue strength and cracks prefer to propagate from these regions.However,as cracks normally originate from specimen free surfaces rather than impact defects,the effects of the impact defects on fatigue strength can

Hirotaka Tsuru's research works Nagoya University

506 Notch effect of bearing steel SUJ2 in very high cycle regime.Article.Mar 2006; Notch effect on fatigue strength reduction of bearing steel in the very high cycle regime.Full text of Fatigue notch sensitivity of some aluminum Full text of Fatigue notch sensitivity of some aluminum alloys See other formats Journal of Research of the National Bureau of Standards Vol.52,No.5,May 1954 Research Paper 2495 Fatigue Notch Sensitivity of Some Aluminum Alloys J.A.Bennett and J.G.Weinberg The notch sensitivity in fatigue was determined for 24S-T4,61S-T6,and 75S-T6 alumi- num alloys.Fatigue strength of severely notched specimens made of Ti Dec 19,2014 Notch effect on fatigue strength reduction of bearing#0183;The reduction of the fatigue strength due to the notch effect is not so different in the LCF and HCF regimes; the slope of the two curves changes from 9.25 (smooth specimens) to 6.26 (notched specimens).At 210 6 loading cycles,the ratio between the mean stress amplitudes for unnotched and Vnotched specimens is 4.75 (Table 3).

Fatigue in Welded-Steel Structures Machine Design

Fatigue life is a key concern in welded-steel frames for mobile equipment that experience large and varying dynamic loads.For engineers who design welded-steel structures subject to dynamic Fatigue crack propagation behaviour derived from SN data The crack propagation law was derived from the S-N data in the very high cycle fatigue of a bearing steel.The propagation rate,da/dN (m/cycle),of surface cracks was estimated to be a power function of the stress intensity range,K (MPam) with the coefficient C s = 5.87 x 10- 13 and the exponent m s = 4.78.The threshold stress intensity range was 2.6MPam.Fatigue crack propagation behaviour derived from SN data The crack propagation law was derived from the S-N data in the very high cycle fatigue of a bearing steel.The propagation rate,da/dN (m/cycle),of surface cracks was estimated to be a power function of the stress intensity range,K (MPam) with the coefficient C s = 5.87 x 10- 13 and the exponent m s = 4.78.The threshold stress intensity range was 2.6MPam.

FATIGUE STRENGTH OF SINTERED IRON AND STEEL

that all mechanical properties drop by more than just the percentage of reduction of load bearing cross-section caused by the pores.As a rule of thumb in the density range of technical interest,the fatigue strength is reduced by about 5 % by each percent of porosity.Fig.1.Effect ofEnhanced Fatigue Strength of Commercially Pure Ti Fully reversed bending fatigue tests were performed on polished hour-glass specimens of commercially pure titanium grade 1 with three different grain sizes,that were produced by severe plastic deformation (rotary swaging) and subheat treatments,in order to examine the effect of grain size on fatigue.An improvement in fatigue strength was observed,as the polycrystal grain size was refined.Effect of small scale notches on the very high - CORE(2006).Notch effect on fatigue strength reduction of bearing steel in the very high cycle regime.S.,and Matsunaga,H.(2008) Fatigue notch sensitivity and the notch size effect.(2006).Specific Features and mechanisms of fatigue in the ultrahigh-cycle regime.(1998).T.,Tagawa,T.,and Miyata,T.(1998) Fatigue limit of blunt-notched components.

Effect of notch geometry on the fatigue strength and

Oct 18,2017 Notch effect on fatigue strength reduction of bearing#0183;Studying the effect of different geometric features of machined notch on the fatigue strength and critical distance has an important guiding role to understand the critical distance size effect and to predict the HCF strength of turbine engine fan blades after FOD.Systematically experimental investigations of geometrical characteristic effects on the 106 cycle fatigue strength and critical Effect of Stress Concentration on Fatigue LifeEffect of Stress Concentration on Fatigue Life (continued) So what effect does a stress riser have on fatigue life? Since the stress is much higher in these areas than in the rest of the part,fatigue failures will usually initiate in these regions.This is part of what makes fatigue life estimation difficult.DeepDyve - Unlimited Access to Peer-Reviewed JournalsDeepDyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Cited by 129Publish Year 2006Author Yoshiaki Akiniwa,Nobuyuki Miyamoto,Hirotaka Tsuru,Keisuke TanakaNotch effect on fatigue strength reduction of bearing

Notch effect on fatigue strength reduction of bearing steel in the very high cycle regime. Ultrasonic fatigue tests were conducted with smooth and notched specimens of a bearing steel of two batches (JIS SUJ2-A and SUJ2-B). The fatigue strength of notched specimens was lower than that of smooth specimens.The amount of reduction tended Cited by 129Publish Year 2006Author Yoshiaki Akiniwa,Nobuyuki Miyamoto,Hirotaka Tsuru,Keisuke TanakaFatigue of structural adhesives under stress The same trend could be observed in Fig.4b (i) alteration of slope of the SN curve,(ii) reduction of fatigue strength compared to un-notched (un,black curve) with stronger effects at the high cycle fatigue,and (iii) the severity of fatigue is increased for bigger notches with higher values of the FSL for the notched specimens (d10 and d20).Author V.C.Beber,B.SchneiderPublish Year 2020Nobuyuki Miyamoto's research works Denso Corporation Nobuyuki Miyamoto's 5 research works with 107 citations and 86 reads,including Notch effect on fatigue strength reduction of bearing steel in the very high cycle regime

ANALYTICAL-EXPERIMENTAL METHOD OF DETERMINING FATIGUE

sensitivity to the notch effect. fatigue strength reduction of bearing steel in the very high cycle regime,Inter national .Journal of Fatigue Vol.28 2006 15551565.12345NextNotch effect on strength and fatigue life of woven Oct 01,2019 Notch effect on fatigue strength reduction of bearing#0183;Static and fatigue tests were conducted to understand the notch effect on strength and fatigue life of composite laminates. Experiments show that the notch effect is dependent on fibre type,notch-depth,load type and load-sequence. A modified model was proposed to consider the effects of the notch and the stress-ratio.

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