Fatigue test results of surface hardened components to evaluate a two layer approach for strength assessment

Dobberke, Dénes; Wiebesiek, J.; Fröschl, Jürgen; Leitner, Martin

doi:10.1016/j.proeng.2018.02.027

Cited by 6 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The article [11] considers an effective two-layer model for estimating the fatigue strength of surface hardening parts based on local stresses. The purpose of the developed method is a more reliable computational evaluation of the fatigue life of power unit components such as gears, axles or crankshafts in the automotive industry.…”

Section: Introductionmentioning

confidence: 99%

Effects of pulsed laser hardening of cylindrical surfaces on fatigue behavior

Alisin

2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The issues of the of laser hardening of the plain bearing effects on the fatigue strength of the crankshaft neck journal are discussed in this article. The crankshaft destruction of the crankshaft leads to catastrophic consequences, especially for heavy diesel engines. The article substantiates the assertion of a decrease in the fatigue strength of steels after pulsed laser hardening treatment of the friction surface to increase the wear resistance of a plain bearing. The process of formation of a surface hard layer of steel and the formation of dimple-shaped stress concentrators on it after interaction with a laser pulse is studied. Factors affecting the fatigue behavior of materials are analyzed. Particular attention is paid to the formation of a residual stress state in the surface layer and the role of surface defects on the fatigue behavior of steel. The assumption about the possibility of reducing the decrease in fatigue strength by optimizing the technological parameters of laser processing is substantiated. On the basis of the study, it is proposed to limit the energy of the laser pulse, preventing the surface from melting.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of pulsed laser hardening of cylindrical surfaces on fatigue behavior

Alisin

2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…One layer characterized the induction-hardened surface, while the second layer characterized the base material. Compared to the unhardened base material, the fatigue tests at different stress ratios for a martensitic material revealed a higher fatigue strength within the low-and high-cycle fatigue [27]. Zhang et al evaluated the fatigue crack non-propagation behavior of a gradient steel structure from induction-hardened railway axles.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Safety and Reliability of SCM440 Steel with Induction Hardening

Lee,

Park,

Nam

2023

KEM

View full text Add to dashboard Cite

In this study, structural SCM440 steel was used to investigate harmless crack size using compressive residual stresses by induction hardening (IH). The fatigue limits of base metal (BM), quenching–tempering (QT), and IH specimens were obtained. The harmless crack size (ahml) was evaluated using the fatigue limits, threshold stress intensity factor using the Ando equation, and the sum of the stress intensity factor using the Newman-Raju and API-RP579 equations. Because as the crack depth increases, the compressive residual stress rapidly decreases, the harmless crack was determined from the intersection of depth for all aspect ratios (As). However, the outermost surface crack did not intersect because the compressive residual stress (σr,s) on the surface is always present. The ahml values based on BM and QT are 1.04−1.45 and 1.02−1.39 mm, respectively. These values can be evaluated as the ∆Kth(l) of a long crack. ahml did not significantly depend on As. If the crack detected after nondestructive inspection (NDI) is not surface modified after repair, then NDI1 with a very high resolution must be performed.

show abstract

Failure on an Automobile Rear Axle Shaft

Perera

2022

J Fail. Anal. and Preven.

View full text Add to dashboard Cite

Fatigue test results of surface hardened components to evaluate a two layer approach for strength assessment

Cited by 6 publications

References 4 publications

Effects of pulsed laser hardening of cylindrical surfaces on fatigue behavior

Effects of pulsed laser hardening of cylindrical surfaces on fatigue behavior

Improvement of Safety and Reliability of SCM440 Steel with Induction Hardening

Failure on an Automobile Rear Axle Shaft

Contact Info

Product

Resources

About