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A method to estimate P-S-N curve of welded joints under general stress ratio
, 2002 Guan Deqing, Yi Weijian, Wang Qi
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A New Method to Determine the Fatigue Limit and the p-S-N Curve
Applied Mechanics and Materials, 2012The performances of material fatigue can be illustrated by the S-N curve, the p-S-N curve and the fatigue limit, which are very important to engineering and the mechanical design. Recently, the author proposed a new method to determine a conditional probability density distribution surface(CPDDS) of the material, and the surface can reflects most ...
Jian Ming Zhai, Xiao Yang Li
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P–S–N curves fitting method of small samples obeying Weibull distribution
Fatigue & Fracture of Engineering Materials & StructuresAbstractA three‐parameter Weibull small sample aggregation method is proposed to address the problem of small sample fatigue data in practical engineering. First, based on the empirical assumption that the shape parameter is a constant and data equivalent conversion and aggregation, the small sample fatigue life data are converted into “equivalent ...
Jiaxin Song +5 more
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International Journal of Fatigue, 2020
Abstract To increase the prediction accuracy of small-number sample life data, improved backward statistical inference approach (ISIA) was formulated using the modified distribution coefficients while fitting the fatigue probabilistic S-N (P-S-N) curve.
Cunhai Li +4 more
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Abstract To increase the prediction accuracy of small-number sample life data, improved backward statistical inference approach (ISIA) was formulated using the modified distribution coefficients while fitting the fatigue probabilistic S-N (P-S-N) curve.
Cunhai Li +4 more
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A study on modified P‐S‐N curve of notched specimens based on small sample under multiaxial loading
Fatigue & Fracture of Engineering Materials & Structures, 2022AbstractThe small sample data under the highest stress level are augmented based on the improved Bootstrap method, and then the augmented data are converted to sample data under the lower stress levels with the Principle of Fatigue Life Probability Percentiles Consistency.
Xuemei Pan +4 more
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A Method for Estimating Parameters of P-S-N Curves Based on Weibull Distribution
Volume 7: 5th International Conference on Micro- and Nanosystems; 8th International Conference on Design and Design Education; 21st Reliability, Stress Analysis, and Failure Prevention Conference, 2011An S-N curve is a traditional tool for design against fatigue. Because there is often a considerable amount of scatter in fatigue performance of specimens, The P-S-N curves capturing the probability of failure should be employed instead of S-N curves. In order to minimize the time and the number of specimens required for fatigue test, many researches ...
Dan Ling +4 more
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Applied Mechanics and Materials, 2013
The p-S-N curve (p = 50%) of die casting magnesium alloy AZ91D with 1% mischmetal was determined and the fatigue strength corresponding to 3.8 × 105 cycles with 50% probability was 70 MPa. The fatigue fracture surfaces were observed using scanning electron microscopy. The fatigue factures varied with the applied stress and their own defects.
Yu Lei Xu +3 more
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The p-S-N curve (p = 50%) of die casting magnesium alloy AZ91D with 1% mischmetal was determined and the fatigue strength corresponding to 3.8 × 105 cycles with 50% probability was 70 MPa. The fatigue fracture surfaces were observed using scanning electron microscopy. The fatigue factures varied with the applied stress and their own defects.
Yu Lei Xu +3 more
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Sulla stima delle curve P-S-N mediante inferenza bayesiana
2008Si riportano i risultati di uno studio pseudo-sperimentale condotto con il metodo Montecarlo al fine di quantificare gli effetti prodotti dall’inclusione dell’informazione a priori in un procedimento inferenziale bayesiano per la definizione delle curve P-S-N e della design curve di un dato acciaio. Le ipotesi di partenza della procedura di analisi dei
DE IORIO, ANTONIO +3 more
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International Journal of Fatigue, 2010
Abstract Conventional S – N fatigue curves, the so-called Wohler curves are generally considered as the experimental fatigue life plots for several stress amplitudes. The curves are usually expressed as median ranks and each life distribution is supposed to follow the log-normal distributions.
Shigeo Shimizu +2 more
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Abstract Conventional S – N fatigue curves, the so-called Wohler curves are generally considered as the experimental fatigue life plots for several stress amplitudes. The curves are usually expressed as median ranks and each life distribution is supposed to follow the log-normal distributions.
Shigeo Shimizu +2 more
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Applied Mechanics and Materials, 2014
The tensile fatigue tests and S-N curve fitting results of the coupling bolt material 25CrMo were given in this paper. It has been proved that the high-cycle fatigue properties of the bolt material can be accurately described by the three-parameter exponential S-N curve model by comparing the fitting results based on different S-N curve models.
Yu Jiong Gu +4 more
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The tensile fatigue tests and S-N curve fitting results of the coupling bolt material 25CrMo were given in this paper. It has been proved that the high-cycle fatigue properties of the bolt material can be accurately described by the three-parameter exponential S-N curve model by comparing the fitting results based on different S-N curve models.
Yu Jiong Gu +4 more
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