Parameters identification and validation of plastic-damage model of 304 stainless steel by small punch test at ambient temperature

Lotfolahpour, Amirreza; Soltani, Nasser; Ganjiani, Mehdi; Baharlouei, Davoud

doi:10.1016/j.engfracmech.2018.07.007

Cited by 14 publications

(4 citation statements)

References 16 publications

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“…In their work, BPNNs was trained by the predicted load-displacement curves of 457 groups of different hypothetical materials through FE method based on the GTN model. Similar methods were applied in pre-cracked SPCT specimen (Shikalgar et al ., 2020; Lotfolahpour et al ., 2018) to numerically predict crack growth at peak load for P91. The results indicate that ANN was a useful tool to identify creep parameters.…”

Section: Inverse Methods Used For Determining High Temperature Proper...mentioning

confidence: 99%

Analytical and inverse method for determining high temperature properties of materials using small punch creep: a review

Liu

et al. 2023

MMMS

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PurposeThis paper presents a review concerning the analytical and inverse methods of small punch creep test (SPCT) in order to evaluate the mechanical property of component material at elevated temperature.Design/methodology/approachIn this work, the effects of temperature, specimen size and shape on material properties are mainly discussed using the finite element (FE) method. The analytical approaches including membrane stretching, empirical or semi-empirical solutions that are currently used for data interpretation have been presented.FindingsThe state-of-the-art research progress on the inverse method, such as non-linear optimization program and neutral network, is critically reviewed. The capabilities of the inverse technique, the uniqueness of the solution and future development are discussed.Originality/valueThe state-of-the-art research progress on the inverse method such as non-linear optimization program and neutral network is critically reviewed. The capabilities of the inverse technique, the uniqueness of the solution and future development are discussed.

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Section: Inverse Methods Used For Determining High Temperature Proper...mentioning

confidence: 99%

Analytical and inverse method for determining high temperature properties of materials using small punch creep: a review

Liu

et al. 2023

MMMS

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“…Depending on the punch movement, the results of the tests are different. The constant force method provides displacement-time curve for creep behaviour, and the application of constant displacement provides force-displacement curve for elastic and plastic properties (Lotfolahpour et al, 2018). The force-displacement curve can be divided into five sections: (I) elastic bending, (II) plastic bending, (III) membrane stretching and (IV) plastic instability (Simonovski et al, 2017).…”

Section: Figure 1 Configuration Of Sp Testmentioning

confidence: 99%

“…The following articles represent studies from these main groups. First, a research by A. Lotfolahpour et al stated that the dies of the test setup are not completely rigid, which may cause errors in the FEM simulations (Lotfolahpour et al, 2018). The study used connected GA and NN methods.…”

Section: Computer Analysis and Sp Testmentioning

confidence: 99%

The small punch test: An overview of previous research

Kulcsár,

Spisák

2023

MDT

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The knowledge of material properties is a key factor in designing structures which withstand the challenges of their lifetime. Small Punch (SP) test is a material testing method which has the advantage of lean material usage. In this study, an overview is presented on the SP testing method. The aim of this paper is to help researchers by collecting articles about different research fields of SP testing. With the experiences from previous research a promising theme is proposed for future analysis in connection with SP testing.

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“…The detailed description of parameter optimization based on the genetic algorithm can be referred to references. 47,48 The fitness value is the reciprocal of the sum of the mean square deviation of the experimental and simulated values. The population size and generations are 8000 and 100, respectively.…”

Section: Determination Of Materials Constants and Comparative Analysismentioning

confidence: 99%

Numerical analysis of fatigue crack growth using a plastically dissipated energy factor based model

Wang

Jiang

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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The investigation of fatigue crack growth (FCG) behavior may contribute to the assessment of damage tolerance of components. To study the FCG behavior considering the elastic–plastic behavior at the crack tip, a numerical simulation scheme based on compact tension (CT) specimen is developed. Also, an effective plastically dissipated energy (PDE) factor composed of maximum PDE ([Formula: see text]) and PDE range ([Formula: see text]) is proposed to establish the expression for evaluating the FCG rate. The simulation results show good agreement with the results of test under same load conditions. Also, the mesh sensitivity analysis and the comparison with test results confirm the validation of proposed model. Based on the proposed numerical simulation scheme, the FCG behavior is studied by analyzing the influence of plastic wake, mean load, load range, overload, underload, load sequence, and cyclic compression load on FCG from the perspective of crack driving force, FCG rate, and crack opening displacement (COD). It is found from the analysis results that the developed numerical simulation scheme can consider the load history effect and crack closure effect. The mechanisms of these factors on the influence of FCG rate are analyzed in detail.

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Parameters identification and validation of plastic-damage model of 304 stainless steel by small punch test at ambient temperature

Cited by 14 publications

References 16 publications

Analytical and inverse method for determining high temperature properties of materials using small punch creep: a review

Analytical and inverse method for determining high temperature properties of materials using small punch creep: a review

The small punch test: An overview of previous research

Numerical analysis of fatigue crack growth using a plastically dissipated energy factor based model

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