Abstract

Weld lines in plastic components are usually mechanical weak points; they have reduced strength compared to the base material. There are many scientific studies on weld line strengths. However, there is a lack of structured processing in such a way that the practitioner can at least make a plausible estimate of the weld line strength with the material data usually available. This article addresses this problem and presents a procedure that makes this possible. First, the origin of weld lines is discussed. Then different types of weld lines are characterized. Furthermore, the plastic classes are grouped according to their sensitivity to weld lines. Finally, a practical procedure for estimating weld line strength is presented on the basis of a literature review and a statistical analysis derived from this.

Slide deck

Presenter Bio

Sascha Pazour studied at the Cologne University of Applied Sciences and graduated with a Diploma in Mechanical Engineering. He is working for PART Engineering in Bergisch Gladbach, Germany and is in charge of the PART Software customer and partner relations.