PSI - Issue 6

Author name / Structural Integrity Procedia 00 (2017) 000–000

3

A.A. Chevrychkina et al. / Procedia Structural Integrity 6 (2017) 283–285

285

120

1 2 3

100

80

60

Tensile strength, MPa

40

20

10 -5

10 -4

10 -3

10 -2

10 -1

10 0

10 1

10 2

10 3

Strain rate, 1/s

Fig. 2. Dependence of the dynamic tensile stress for ABS plastic on the strain rate s − 1 . Symbols 1 correspond to experimental data for specimens 1, symbols 2 – specimens 2, symbols 3 correspond to experimental data obtained in Yin and Wang (2010) for raw materials and the curves correspond to calculations based on criterion (1)

4. Conclusions

Strength properties of ABS material were determined under conditions of tensile loads on a Shimadzu AG-50kNX and Instron CEAST 9350 with an accelerator. The conducted experimental studies on the measurement of the tensile strength of an additive material made of ABS plastic on a 3D printer in quasi-static and dynamic modes showed that the static strength and the Young’s modulus of the printed samples correspond to the values of the raw material. The experiments data showed the possibility of testing small samples to achieve higher strain rates. The resulting rate dependence of strength was described using the criterion of incubation time. The value of the characteristic incubation time τ = 57 µ s was determined, which can also be used to predict the destruction of the printed material in the case of dynamic shock pulses of arbitrary shape.

Acknowledgements

This work was supported by the Russian Science Foundation (17-11-01053). Scientific research were performed at the Research park of St.Petersburg State University The study of extreme states of materials and constructions.

References

Petrov YV, Utkin AA., 1989. Mater Sci. . 25, 153-160. Petrov, Yu.V., 1991. On quantum nature of dynamic fracture in brittle solids. Sov. Phys. Dokl. 36, 802 – 804. Yin Z.N., Wang T. J., 2010. Materials Science and Engineering 527, 1461 –1468 .