PT  - JOURNAL ARTICLE
AU  - Raz, Karel
AU  - Zahalka, Martin
AU  - Chval, Zdenek
AU  - Kucerova, Ludmila
TI  - Analysis of Weld Line Influence on Strength of Nylon Parts
DP  - 2017 Sep 1
TA  - Manufacturing Technology Journal
PG  - 561--565
VI  - 17
IP  - 4
AID - 10.21062/ujep/x.2017/a/1213-2489/MT/17/4/561
IS  - 12132489
AB  - Main aim of this article is description of weld line influence on mechanical properties of plastic parts. Special design of mold was created for this research. This mold is able to create specimens with and without weld lines. These specimens undergone tensile test according standard ASTM D638 with different results. Strength and strain results were compared for both types of specimens. Nylon PA6 without any internal reinforcement was used as reference material during testing. Both specimens were investigated also by microscope in order to see composition of weld line and plastic material. Microstructure showed geometry of weld line and also fracture surfaces indicated presence of plastic deformation