**Acknowledgements**

The authors are grateful for the help of the SKG staff during the materialization of this study.

**161**

**Author details**

Fatma Hentati1

\* and Neila Masmoudi<sup>2</sup>

\*Address all correspondence to: fatma.hentati1@gmail.com

Engineers of Tunis, Tunis, Tunisia

Engineers of Sfax, Sfax, Tunisia

provided the original work is properly cited.

1 Laboratory of Applied Mechanics and Engineering (MAI), National School of

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium,

2 Laboratory of Electromechanical Systems (LASEM), National School of

*Influence of Injection Molding Parameters on the Mechanical Properties of Injected PC/ABS Parts*

*DOI: http://dx.doi.org/10.5772/intechopen.95089*

OA The Orthogonal Array Tma The material temperature Tmo The mold temperature Pinj The injection pressure th The holding time MPa Mega Pascal

°C Celsius temperature scale

bar Bar pression scale sec second time scale

### **Acronyms and abbreviations**


*Influence of Injection Molding Parameters on the Mechanical Properties of Injected PC/ABS Parts DOI: http://dx.doi.org/10.5772/intechopen.95089*


*Quality Control - Intelligent Manufacturing, Robust Design and Charts*

ture, 60°C and *E* is the mean of elasticity module obtained from **Table 4**.

the best mechanical properties (σ, E) of the PC/ABS blend (**Table 9**).

is the average elasticity module at the third level of mold tempera-

Three confirmation experiments were conducted at the optimum settings of the process parameters recommended by the investigation. The average tensile strength and the elasticity module obtained at the optimal level of the process parameters

Obviously, there was a difference between the computed and the experimental results. However, this difference can be considered not significant. Therefore, the confirmation tests indicate that the optimal conditions obtained above produced

Tensile Strength (σ) 56.06 MPa 56.28 MPa 0.39% Elasticity module (E) 2040 MPa 1983 MPa 2.28%

**Experimental value Measured value Error**

This work focused on Taguchi experimental method for investigating the influence of the injection parameters on the mechanical properties of PC/ABS during injection molding. Taguchi's results proposed two sets of optimal injection parameters conditions to achieve the best mechanical characteristics (σ, E). A first series: a material temperature of 260°C, an injection pressure of 50 bars, a holding time of 8 sec and a mold temperature of 60°C. A second series: a material temperature of 260°C, an injection pressure of 40 bar, a holding time of 8 seconds and a mold temperature of 60°C. All mechanical properties measurements matched very well with the experimental data. The most important parameter affecting the maximum tensile strength was the injection pressure. However, the material temperature was considered the most important parameter affecting the elasticity module. Consequently, it is shown clearly the above performance characteristics in the injection molding process are greatly significant through this study. So, we recommend that future works involve the impact of injection processing on the surface quality

The authors are grateful for the help of the SKG staff during the materialization

time, 8 sec, *D*<sup>3</sup>

**4. Conclusion**

*Confirmation test results.*

**Table 9.**

of the PC/ABS parts.

**Acknowledgements**

**Acronyms and abbreviations**

IM Injection Molding DOE Design of Experiment S/N Signal-to-Noise ratio

of this study.

*3.2.3 Confirmation tests*

were 56.28 MPa and 1983 MPa.

**160**
