Int J Performability Eng ›› 2019, Vol. 15 ›› Issue (9): 2285-2293.

### Failure Analysis of Acrylonitrile Butadiene Styrene (ABS) Materials and Damage Modeling by Fracture

Fatima Sabaha,b,*, Achraf Wahida,b, Abdelkarim Kartounib, Hamid Chakirb, and Mohamed ELghorbaa

1. aLaboratory of Control and Mechanical Characterization of Materials and Structures, National Higher School of Electricity and Mechanics BP 8118 Oasis, Hassan II University, Casablanca, Morocco;
bCondensed Matter Physics Laboratory, Faculty of Sciences Ben M'Sik, University Hassan II of Casablanca, B.P. 7955, Casablanca, Morocco
• Submitted on  ;  Revised on  ; Accepted on
• Contact: *.E-mail address: sabah.fatima15@gmail.com

Abstract: Polymer materials are distinguished by their simple and economical for-matting, versatility, lightness, and chemical stability. Despite their widespread use both in everyday life and in advanced technologies, these materials are generally still very poorly understood in regards to its chemical, physical and environmental, rheological and mechanical properties. The purpose of this study is to determine the notch effect on the mechanical behavior of Acrylonitrile Butadiene Styrene (ABS), which we carried out tensile tests on ABS rectangular test pieces for different backgrounds. The notch ranges from 1 mm to 18 mm. Subsequently we have based an approach, which consists in following the evolution of static damage as a function of the fraction of life test pieces notched, to know the critical fraction of life and which corresponds to a critical notch radius, which can be authorized. Second, we calculated the stress concentration factor by two methods to determine the critical stress concentration that usually precedes the sudden failure of a component. Finally, we will relate the damage factor Ds to the stress concentration factor through the fraction of life by using a nonlinear correlation, which makes it possible to predict the instant of acceleration of damage for a preventive maintenance.