Experimental Method for Plotting S-N Curve with a Small Number of Specimens

Strzelecki, Przemysław; Sempruch, J.

doi:10.1515/pomr-2016-0079

Cited by 14 publications

(9 citation statements)

References 8 publications

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“…The increment d has a large influence on the accuracy of the standard deviation of distribution of FSL estimated from the staircase method. Zhao and Yang [17] and Strzelecki and Sempruch [25] proposed the stress steps of 5 and 6 MPa for a low‐carbon steel material. In accordance with this work, we chose a strain step of 20 μm/m.…”

Section: Staircase Methods For Fsl Estimationmentioning

confidence: 99%

Experimental strain‐based vibration control to obtain the fatigue strain limit by the staircase method

Shi

Khalij

Gautrelet

2022

Strain

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This study is a combination of constant amplitude fatigue experimental tests with strain control technique and staircase method to assess the fatigue strain limit (FSL). The strain control provides a dwell‐fatigue test to the failure by a strain gauge bonded to the reduced section center of the specimen. A staircase test procedure with a vibration bending bench is detailed in this work, including parameters selection. The result analysis is based on kernel density estimation, used to access the FSL on non‐parameter distribution. Low‐carbon steel specimens with fatigue zone were selected to evaluate the FSL statistical features. The results highlight the efficiency of the strain‐controlled staircase method to reach the FSL.

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Section: Staircase Methods For Fsl Estimationmentioning

confidence: 99%

Experimental strain‐based vibration control to obtain the fatigue strain limit by the staircase method

Shi

Khalij

Gautrelet

2022

Strain

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“…However, it should be noted that the traditional group test approach is a large sample-based test program, which is usually considered as a time-consuming and expensive test technique. 5,6 In engineering applications, it is always hard or infeasible to carry out large-scale fatigue test for determining P-S-N curves due to the constraints of test time and test cost, especially for these expensive, high-reliability, and long-lifetime mechanical components. 7,8 In such circumstances, the applications of traditional group test approach are severely limited by sample size, test time, and test cost.…”

Section: Introductionmentioning

confidence: 99%

Small sample test approach for obtaining P-S-N curves based on a unified mathematical model

Gao

Yuan

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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[Formula: see text] curves provide the essential reference data for fatigue life prediction and reliability evaluation of mechanical component. In practical applications, [Formula: see text] curves can be transformed as a group of straight lines in the dual-logarithm coordinates system. Based on such a characteristic and according to the basic principle that two points that do not coincide can uniquely determine a straight line, a small sample test approach for determining [Formula: see text] curves from the viewpoint of geometry is proposed. The proposed approach can derive the [Formula: see text] curves of mechanical component from a unified mathematical model, which can significantly reduce the fatigue test time and the number of specimens. The fatigue test data of engine connecting rod under four stress levels are applied to verify the proposed approach. Compared with traditional group test approach, both the number of specimens and fatigue test time are decreased by 42.11%, but the average relative error of the proposed approach is less than 7%. Furthermore, the proposed approach has the advantages of mathematically being simple and easy to be used in engineering.

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“…The oldest aqueduct in China was built in the Western Han Dynasty for more than 2000 years, but there was no complete reservation. The early construction of the aqueduct are almost wood structures (Trivedi et al 2018, Yang et al 2017, Wang et al 2018, Strzelecki and Sempruch 2016. In 1930s, a reinforced concrete aqueduct -appeared.…”

Section: Introductionsmentioning

confidence: 99%

The Finite Element Analysis of en Zi Tan Aqueduct in Operation Period

Sun

Wang

2019

Rev. Int. Contam. Ambie.

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As the water resources distribution in China is extremely uneven, inter-basin water transfer project has become an important part of China's water conservancy construction. As part of the the major hydraulic structure in water delivery network across rivers and transportation routes, the design and analysis on aqueduct is important. En Zi Tan Aqueduct is located in Shimen County of Hunan in China. Main content of this paper is about the finite element analysis of the aqueduct on operation period. En Zi Tan Aqueduct is designed flow is of 5.0m 3 /s, longitudinal slope of 1/650, a total length of 1001m. The aqueduct is simple supported beam type, main body is reinforced concrete structure, the cross section is U-shaped and groove in each section length 13m. Top of the tank unilateral laying the bridge deck and railings in order to facilitate pedestrians. The study is using general finite element software to analize, stress and deformation changes on aqueduct body in the operation process; the water load and the earthquake influence on stress and deformation of aqueduct.

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Experimental Method for Plotting S-N Curve with a Small Number of Specimens

Cited by 14 publications

References 8 publications

Experimental strain‐based vibration control to obtain the fatigue strain limit by the staircase method

Experimental strain‐based vibration control to obtain the fatigue strain limit by the staircase method

Small sample test approach for obtaining P-S-N curves based on a unified mathematical model

The Finite Element Analysis of en Zi Tan Aqueduct in Operation Period

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