Measuring J<sup>IC</sup> and J-R Curve of 15MnVN Materal Under Low Temperature by a Single Specimen Method

Zhang Yiliang; et al

Zhang Yiliang, et al, . Measuring JIC and J-R Curve of 15MnVN Materal Under Low Temperature by a Single Specimen Method[J]. Journal of Beijing University of Technology, 1987, 13(4): 81-90.

Citation:

Zhang Yiliang, et al, . Measuring JIC and J-R Curve of 15MnVN Materal Under Low Temperature by a Single Specimen Method[J]. Journal of Beijing University of Technology, 1987, 13(4): 81-90.

Citation:

Zhang Yiliang, et al, . Measuring JIC and J-R Curve of 15MnVN Materal Under Low Temperature by a Single Specimen Method[J]. Journal of Beijing University of Technology, 1987, 13(4): 81-90.

Measuring J^IC and J-R Curve of 15MnVN Materal Under Low Temperature by a Single Specimen Method

Zhang Yiliang,
et al,

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The TPB specimen was used in the experiment. The Δa_i of every unloading points was were determined by means of the unloadingcompliance curve LEBC=f((△a)/(ω-a₀)) of a post-yeild spedimen. Meanwhie, the J-R curve was determined. A new approach to get the crack initiation point has been introduced by using the second of inflexion on the V_g-△ curve. The new results were obtined from the new approach. As compared with the multispecimen methnd, this method is much betler withe erors being less than 10 per cent.

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Measuring JIC and J-R Curve of 15MnVN Materal Under Low Temperature by a Single Specimen Method

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Measuring J^IC and J-R Curve of 15MnVN Materal Under Low Temperature by a Single Specimen Method