Mode I critical energy release rate of additively manufactured polyamide samples

One accepted cause that generates low mechanical strength and/or fracture properties is the presence of defects in structure material. Additive Manufacturing does not except this rule, especially powder bed fusion technologies relays on spreading through a blade or roller followed by laser sintering melting. The paper presents experimental investigations polyamide PA2200 samples obtained selective sintering. mode I critical energy release rate and toughness were determined accordance to ASTM D 5528 – 01 for four sets samples: one set without induced geometrical defects, three other having interlayer intralayer defects. results consist evaluation error computing one-hand hand. In addition, study absorbed defect section was conducted, leading direct correlation between percentages (0.0%, 0.1%, 0.3% 0.5%) energy.