Comparative study of the service life of specimens in ABS with single-notch and double-notch

The advancement of polymers continues to expand relentlessly, becoming increasingly crucial to our daily existence. From high-performance sectors to mass-market industries, polymers permeate every facet of our lives. Consequently, it is imperative that we fully comprehend their properties, characteristics, and behavior. In this context, tensile testing are conducted, out on smooth and notched specimens machined from ABS plates to highlight the presence of residual stresses in the material. This study’s objective is to describe how single and double-notched acrylonitrile butadiene styrene polymer specimens behave mechanically when in use. Additionally, to forecast the development of their harm and their immediate dependability. To do this static tensile tests on samples that have been, intentionally damaged by changing the defect length are used to compare the service lives of the damaged specimens. Additionally, the stages of damage were defined using a damage model known as the “unified theory,” from which we can determine the critical life fraction β c and determine whether a single or double notch defect is more harmful. In order to identify the element with the lowest service life, we additionally calculated the specimens’ dependability. Based on this research, we discovered that the life fraction for specimens with a single notch is lower than that for specimens with a double notch (for single notched and for double notched). As a result, single notched specimens have a shorter lifespan than double-notched specimens. To the conclusion, we also came that a single notch is less reliable than a double notch.