2021
DOI: 10.1103/physrevmaterials.5.083602
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Direct detection of plasticity onset through total-strain profile evolution

Abstract: Plasticity in solids is dependent on microstructural history, temperature, and loading rate, and sampledependent knowledge of yield points in structural materials adds reliability to mechanical behavior. Yielding is commonly measured through controlled mechanical testing, in ways that either distinguish elastic (stress) from total deformation measurements or identify plastic slip contributions. In this paper, we show that yielding can be unraveled through statistical analysis of total-strain fluctuations durin… Show more

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Cited by 5 publications
(13 citation statements)
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“…A schematic of the method can be seen in Fig. 1(b), and the method has previously been shown to work well with simulated strain fields [8] mimicking the fields obtained using DIC. In this paper, the method is used in detecting the yielding of two commercial metal alloys during monotonic tensile loading of the sample.…”
Section: Introductionmentioning
confidence: 81%
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“…A schematic of the method can be seen in Fig. 1(b), and the method has previously been shown to work well with simulated strain fields [8] mimicking the fields obtained using DIC. In this paper, the method is used in detecting the yielding of two commercial metal alloys during monotonic tensile loading of the sample.…”
Section: Introductionmentioning
confidence: 81%
“…These observations on the locations of the peaks in the second PCA component motivate the following definition [8] for the PCA-based prediction of yielding. We define the yield strain prediction as the position of the peak PCA y = arg maxPCA 2 , (9) and this clearly is close to the yield strain defined from the stress-strain curves using Eq.…”
Section: B Detection Of Yieldingmentioning
confidence: 94%
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