Pengujian Ketangguhan Retak Bahan Polyvinyl Chloride (Pvc) Dengan Metoda Energi Esensial Patah

ABSTRAK The objective of this research is to investigate the effect of gauge length and strain rate on the specific essential work - offracture (we) according to the Essential Work of Fracture Method (EWFM). The Polyvinyl Chloride (PVC) plate was used in this experiment. Single Edge Notch Tension (SENT) specimens of varying ligament lengths were tested in tension to obtain load-displacement curves. It was obtained a linear relationship between the specific total work of fracture (Hit) and ligament length (1). Intersection of this line and wt axis (vertical) is identified as the specific essential work of fracture (we). The experimental result shows that the average of specific essential work of fracture (we) is 3.2089 kg.nuninun2, 2.0429 kg.mm/min2 and 1.88 kg.mm/mm2 for 80 mm, 100 and 120 mm gauge length, respectively. Strain rate of JO mm/minute,. 25 mm/minute and 50 mm/minute give a specific essential work of fracture (we) 2.0732 kg.nun/min2, 3.6932 kg.mm/mm2 and 1.7065 kg.mmirnin2, respectively. Key words : PVC, specific total work of fracture, specific essential work of fracture, strain rate, gauge lengt