A Study on the Diesel Engine Crankshaft Fatigue Performance Optimization

Çevik, Gül; Tuncali, Zafer; Duran, Ertuğrul Tolga

doi:10.4271/2009-01-0261

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…As previously stated, several works have already been published in the literature on the effect of shot-peening and deep rolling on various materials, but they mainly deal with standard cylindrical notched/unnotched specimens [8][9][10][11][12][13] or with crankshafts [14][15][16][17]. Conversely, only few works have been done that specifically focused on the effect of surface treatments in fasteners.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Effect of Shot Peening and Deep Rolling on the Fatigue Response of High Strength Fasteners

Reggiani¹,

Olmi²

2019

Metals

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Shot-peening and deep rolling are mechanical surface treatments that are commonly applied to enhance the fatigue performances of components, owing to their capacity to generate compressive residual stresses and induce work hardening. However, literature is still poor of published data concerning the application of these treatments to high strength steels fasteners, although these represent a class of components among the most widespread. In the present work, the impact of deep rolling and shot-peening performed in the underhead radius of two set of fasteners made of 36NiCrMo and 42CrMoV for fatigue life enhancement has been investigated. The experimental tests consisted of six combinations of shot-peening and deep rolling, including the non-treated state. Two test campaigns have been sequentially carried out with different process parameters and treatment sequences. The results always showed a beneficial impact of the deep rolling on fatigue, especially for the 42CrMoV steel. Conversely, the effect of the shot-peening strongly depended on the selected set of parameters, alternatively leading to an improvement or a worsening of the fatigue life in relation to the level of induced surface roughness.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Effect of Shot Peening and Deep Rolling on the Fatigue Response of High Strength Fasteners

Reggiani¹,

Olmi²

2019

Metals

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“…A wide literature exists focused on the comparison of the various surface treatments, indicating deep rolling and shot peening as the most promising surface treatments, also considering the economic impact of the processes, as well as the readiness integration into manufacturing chains [3,[7][8][9]. Nevertheless, all the published works dealt with standard cylindrical notched/unnotched specimens or with crankshafts [10,11]. Conversely, few works are nowadays specifically focused on the effect of deep rolling in fasteners.…”

Section: Introductionmentioning

confidence: 99%

Effects of Surface Treatments on the Fatigue Response of High Strength Fasteners

Reggiani

Olmi

Orazi

et al. 2019

KEM

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The aim of the present work was the assessment of the impact of deep-rolling and shot-peening performed in the underhead and in the unthreaded shank of two high strength screws (36 NiCrMo and 42 CrMoV) for fatigue life enhancement. The experimental campaign consisted of six combinations, including the non-treated state. The aforementioned treatments were evaluated alone or with shot-peening performed after deep-rolling in the underhead fillet of the screws. Deep rolling was carried out at the optimal rolling force, whereas two shot diameters were considered for shot-peening (Z100 and UFS70). The results have been evaluated in terms of fatigue limits and factor effects have been assessed by marginal mean plots.

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Cranktrain Development

Gilbert¹

2014

Encyclopedia of Automotive Engineering

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The crankshaft is responsible for the conversion of the linear motion of the piston into rotation that can be usefully passed to the rest of the vehicle drivetrain. As such, it can be seen as the heart of the engine. Although simple in appearance, optimization of the design of the crankshaft is fundamental to achieve an engine design that is efficient and refined, compact with minimum weight, reliable, and with lowest cost. This chapter explains the function and design considerations of the individual features of the crankshaft. Manufacturing processes are described starting from material selection for the casting or forging, moving through machining and onto surface treatment for wear and fatigue resistance.

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A Study on the Diesel Engine Crankshaft Fatigue Performance Optimization

Cited by 7 publications

References 3 publications

Experimental Investigation on the Effect of Shot Peening and Deep Rolling on the Fatigue Response of High Strength Fasteners

Experimental Investigation on the Effect of Shot Peening and Deep Rolling on the Fatigue Response of High Strength Fasteners

Effects of Surface Treatments on the Fatigue Response of High Strength Fasteners

Cranktrain Development

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