PSI - Issue 36

V.V. Kharchenko et al. / Procedia Structural Integrity 36 (2022) 59–65 V. V. Kharchenko et al. / Structural Integrity Procedia 00 (2021) 000 – 000

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indentation specified in Fig. 5 indicates that none of the investigated methods allows one to determine them with a deviation of less than 10%.

а

b

Fig. 5. Comparison of the methods for determining the mechanical properties from the results of indentation: (а) yield strength; (b) tensile strength (MPa). 6. Conclusion From the results of experimental investigations, the analysis of techniques and normative documents regulating the determination of mechanical characteristics by measuring hardness and indentation, the need to develop a new normative document was shown in order to improve the accuracy of determining the strength characteristics by non destructive methods. References Ahn, J., Kwon, D., 2001. Derivation of plastic stress - strain relationship from ball indentations: Examination of strain definition and pileup effect. Journal of Materials Research 16(11), 3170 - 3178. Arai, M., 2017. High - temperature creep property of high Cr ferritic heat - resisting steel identified by indentation test. ASME Journal of Pressure Vessel Technology 139, 021403. Bakirov, M. B. Potapov, V. V., 2000. Phenomenological method for determining the mechanical properties of VVER vessel steels from the indentation diagram of a ball indenter. Zavodskaya laboratoriya 66(12), 35 - 44. Beghini, M., Bertini, L., Fontanari, V., 2006. Evaluation of the stress - strain curve of metallic materials by spherical indentation. International Journal of Solids and Structures 43(7 - 8), 2441 - 2459. Beghini, M., Bertini, L., Fontanari, V. Monelli B. D., 2011. Analysis of the Elastic - plastic Properties of Metallic Materials by Instrumented Spherical Indentation Testing. Procedia Engineering 10, 1679 - 1684. Bolzon, G., Rivolta, B., Nykyforchyn, H., Zvirko, O., 2018. Mechanical analysis at different scales of gas pipelines. Engineering Failure Analysis 90, 434 - 439. Das, G., Das, M., Ghosh, S., Dubey, P., Ray, A. K., 2010. Effect of aging on mechanical properties of 6063 Al - alloy using instrumented ball indentation technique. Materials Science and Engineering: A 527(6), 1590 - 1594. DSTU EN 10002 - 1:2006, 2006. Metallic materials. Tensile testing. Part 1. Method of testing at ambient temperature (EN 10002 - 1:2004, IDT). Kyiv, Ukraine. DSTU ISO 6506 - 1:2019, 2019. Metallic Materials. Brinell Hardness Test. Part 1: Test Method (EN ISO 6506 - 1:2014, IDT; ISO 6506 - 1:2014, IDT). Kyiv, Ukraine. DSTU ISO 6506 - 2:2019, 2019. Metallic Materials. Brinell Hardness Test. Part 2: Verification and calibration of testing machines (EN ISO 6506 2:2018, IDT; ISO 6506 - 2:2017, IDT). Kyiv, Ukraine. Fu, K., Chang, L., Zheng, B., Tang, Y., Wang, H., 2015. On the determination of representative stress - strain relation of metallic materials using instrumented indentation. Materials & Design 65, 989 - 994. George, R. A., Dinda, S., Kasper, A, S., 1976. Estimating Yield Strength from Hardness Data. Metal Progress 30 - 35. Ghosh, S., Tarafder, M., Sivaprasad, S., Tarafder, S., 2010. Experimental and numerical study of ball indentation for evaluat ion of mechanical properties and fracture toughness of structural steel. Transactions of the Indian Institute of Metals 63(2 - 3), 617 - 622. Haggag, F. M., 1989. Indentation Microprobe for Structural Integrity Evaluation (U.S. Patent No. 4852397). U.S. Patent and Tradement Office.