PSI - Issue 19

Bodai,M et al. / Structural Integrity Procedia 27 (2019) 000 – 000

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Masaru Bodai et al. / Procedia Structural Integrity 19 (2019) 64–72

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(Note) Solid marks: Mean strain testing

TP-A TP-B TP-C TP-D TP-E

5

4

3

2C/a

2 C

2

a

1

0

0,6

0,7

0,8

0,9

1

N/N Through-Wall

Fig. 6. Aspect ratio vs N / N Through-Wall .

Examples of the visible cracks by replica printing and beach marks are shown in Fig. 7 in TP - A ( Bodai et al ., 2018). Fig. 7 (a) shows the replica printing of 8,000 cycles with 1 crack observed on the surface. The number of times shown in Fig. 7 (b) and Fig.7 (c) correspond to the beach mark, and the crack observed in Fig. 7 (a) corresponds to the beach mark position of 1.

crack

1

2 3

3mm

1mm

10mm

(a) Crack in 8,000 cycles

(b) Beach marks (1-3)

3

C

4 5

6

7

a

8

(c) Beach marks (3-8) Fig.7. (a)Visible cracks by replica printing; (b) and (c) Observation of fracture surface of TP-A.