Issue 65

P. V. Patel et al., Frattura ed Integrità Strutturale, 65 (2023) 257-269; DOI: 10.3221/IGF-ESIS.65.17

and an elongation of 23.73 mm. Further, the average rupture strain at the point of failure for the test specimens is found as 75.33 µm/m . A summary of test results obtained from the tension test conducted on three SS rod specimens is presented in Tab. 3.

60

700

50

600

40

500

400

30

300

20 Load (kN)

Stress (MPa)

200

SS_1 SS_2 SS_3

SS_1 SS_2 SS_3

10

100

0

0 1020304050607080 0

0

5

10 15

20

25 30 35

Displacement (mm)

Strain (  m/m)

(a) Load vs displacement

(b) Stress vs strain

Figure 8: Load-displacement and stress-strain behaviour of SS rod.

Sr. No.

Stainless Steel Rod

Unit

1.

Diameter

10

mm

2.

c/s area of rod

78.50

mm 2

S1

50.14

kN

S2

52.74

kN

3.

Ultimate Load of individual specimens and average load

S3

51.68

kN

Avg.

51.52

kN

4.

Average Tensile strength

656.30

N/mm 2

5.

Average Elongation of rod

23.73

mm

6.

Average ultimate rupture strain

75.33

µm/m

7.

Average Young’s modulus

151

GPa

Table 3: Results of tensile test for SS rod

Tension Test of 32 and 34 Gauge Stainless Steel Wires To find the tensile strength of individual wire of 32 and 34 gauge used in manufacturing stainless-steel wire mesh, wires are taken out from both the SSWM 40×32 and SSWM 50×34 meshes. Tension tests on SS wires are carried out using the tensile testing machine having capacity of 5 kN. Three specimens are tested for each diameter of wire. For all the test specimens of wires, gauge length of 200 mm is kept. A placement of SS wire in tensile testing machine and typical failure observed are shown in Fig. 9. The load displacement curve for the three SS wire specimens of 32- and 34-gauge are presented in Fig. 10. A microscopic observation of failed stainless-steel wire as shown in Fig. 9 reveals cup-cone failure of wires. A ductile behavior of individual wire of SSWM, is also observed from the curve of load versus displacement as presented in Fig. 10. Average ultimate load of 35.26 N and 21.66 N are recorded, respectively, for the 32-gauge and 34-gauge SS wire. Based on average ultimate load, tensile strength is found as 721.416 N/mm 2 and 528.418 N/mm 2 , for the 32-gauge wire and 34-gauge wire, respectively. Tab. 4 presents the summary of results for the tension test carried out on individual SS wires.

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