Issue 30

A. Martín-Meizoso et alii, Frattura ed Integrità Strutturale, 30 (2014) 14-22; DOI: 10.3221/IGF-ESIS.30.03

4‐25‐F‐M

4‐25‐F‐T

0,35

Fracturestrain Uniform strain Critical strain,eps_c (Voce's fitting)

0,20

0,30

0,25

0,15

0,20

Strain, 

Strain, 

0,10

0,15

0,10

0,05

Fracturestrain Uniform strain Critical strain,eps_c (Voce's fitting)

0,05

0,00

0,00

0

300

600

900

1200

1500

1800

2100

2400

0

300

600

900

1200

1500

1800

2100

2400

Mid‐distancefromOXYFUELcut (microns)

Mid‐distancefromOXYFUELcut (microns)

4‐25‐F‐B

Fracturestrain Uniformstrain Critical strain,eps_c (Voce's fitting)

0,20

0,15

Strain, 

0,10

0,05

0,00

0

300

600

900

1200

1500

1800

2100

2400

Mid‐distancefromOXYFUELcut (microns)

Figure 11 : Evolution of uniform strain (necking strain), fracture of maximum strain and critical strain (of Voce’s fitting), as a function of distance from oxy-fuel cut for the top, middle and bottom positions across the cut edge thickness.

4‐25‐F‐M

0,18

Top Middle Bottom

0,16

0,14

0,12

0,04 Hardeningexponent, n (Hollomon's) 0,06 0,08 0,10

0,02

0,00

0

300

600

900

1200

1500

1800

2100

2400

Mid‐distancefromOXYFUELcut (microns)

Figure 12 : Evolution of strain hardening index (Voce’s fitting) as a function of distance from oxy-fuel cut for the top, middle and bottom positions across the cut edge thickness.

21