Dual-Notch Void Model to Explain the Anisotropic Strengths of 3D Printed Polymers

Abstract

Based on the unique additive manufacturing process, a dual-notch void model is proposed to explain three tensile strengths of a 3D printed polymer along three major directions. This model incorporates the strength/notch angle relation and provides a relative magnitude of three tensile strengths, i.e., Sx (axial strength) > Sy (transverse strength) ≥ Sz (inter-layer strength).

Assessment of Interfacial Adhesion of Adhesively Bonded 3D-Printed Thermoplastics

“…The technology of Additive Manufacturing was developed as a rapid prototyping tool for both design and fabrication of intricate and flexible designs that were considered difficult to produce [1, 7 -12]. Developments in AM technology have set a new standard and way of production such as Fused Deposition Modelling (FDM), effectively establishing its use from a mere rapid prototyping tool to be one of the main mechanisms for rapid manufacturing [2]. FDM is one of the AM technologies wherein it produces print -outs by adding materials layer by layer [3].…”