PSI - Issue 43

Yoshikazu Nakai et al. / Procedia Structural Integrity 43 (2023) 221–227

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Nakai et al./ Structural Integrity Procedia 00 (2022) 000 – 000

Fig. 7. Side-view of specimen of MM series at (a) 1, (b) 3, (c) 4, (d) 5, ( e) 6, (f) 7, (g) 8, (h) 9, (i) 10, (j) 11, (k) 12, (l) 13 in Fig. 5 (b).

Fig. 8. RCT images for MM series at (a) 5, (b) 6, (c) 7, (d) 8, (e) , (f) 9 in Fig. 5 (b). Glass beads was glued on the surface of the specimen as markers for displacement measurement and to identify the axial position of crosssection.

Acknowledgments This experiment was conducted at BL46XU of Japan Synchrotron Radiation Research Institute (JASRI) under the project numbers 2018B1597, 2019A1643, 2019B1728, and 2021B1887. The authors would like to express their gratitude to Dr. K. Kajiwara of JASRI for his cooperation in conducting this research. Financial supports of this work through JSPS KAKENHI Grant (No. 19H02024, 18H05256, and 18K03837) are gratefully acknowledged. The authors also thank to graduate students of Kobe University, Mr. K. Nonaka, Mr. T. Hase, and Mr. Y. Nakagawa for their technical support.

Fig. 9. Change in crosssectional area in tensile test of MM series.