PSI - Issue 14

K. Vijayan et al. / Procedia Structural Integrity 14 (2019) 642–648 Author name / Structural Integrity Procedia 00 (2018) 000 – 000

644

3

a

b

Fig. 2. (a) Variation in young's modulus across the samples. (b) Variation in tensile strength at yeild across the sample.

Table 1 indicates the value for various parameters for different tool combination which produced maximum tensile strength. For a given combination of Feed rate and rotation speed two samples were tested

Table 1. The parameters for the sample which produced maximum tensile strength.

Tool type

Feed rate

Rotation speed

Plunge

MaximumTemperature Tensile stress atyeild

Young's Modulus

Tapered cylindrical pin

28

2000

4.07

370.8

104.88 107.85 103.52 105.66

7.003 4.942

Trapezoidal pin

28

1400

4.285

365.88

7.46 8.68 7.56 6.26

Straight cylindrical pin

40

1400

4.46

354.2

110.4 108.1

The influence of rotational speed on the tensile strength of the weld were analyzed for trapezoidal pin welded plates. It can be observed from Fig.3 that as the rotational speed increased the Young's modulus and tensile strength increased. This could be because the frictional heating increases with the rotational speed.

Fig. 3 Stress strain curve for the case with maximum tensile strength for trapezoidal pin tool