Date of Completion

2021

Document Type

Thesis

Degree Name

Bachelor of Science in Occupational Therapy

Keywords

Splint fabrication.

Abstract

The study aimed to determine whether Nylon and Polycarbonate have comparable tensile properties with 3.2mm non-perforated LTT. A descriptivecomparative research design was utilized to provide information regarding the tensile properties of the materials and to determine whether the tensile properties of the 3D printing materials are significantly higher than those of 3.2mm non-perforated LTT. Seven type I specimens were produced for each material following ASTM D638 Standard and requirements of the testing facility. All specimens underwent testing using ASTM D638 Adapted test method by ITDI-DOST to determine its tensile properties. The researchers utilized one-tailed t-test to determine if the tensile properties (tensile stress at yield, tensile strain at yield, and modulus of elasticity) of the 3D printing materials were significantly higher than that of LTT. Results showed that Nylon and Polycarbonate have significantly higher tensile stress at yield and modulus of elasticity than 3.2mm non-perforated LTT, however, 3.2mm non-perforated LTT has significantly higher tensile strain at yield than Nylon and Polycarbonate. The tensile properties of the 3D printing materials may have been influenced by the printing parameters set on Ultimaker Cura for 3D printing. Nylon’s tensile properties showed that it is strong and rigid which is ideal for orthotics application. Nylon can also be a 3D material of choice when fabricating splints that aim to provide stabilization, immobilization, and support to larger body structures. Meanwhile, the tensile properties of Polycarbonate also made it applicable when fabricating splints wherein additional rigidity is needed to immobilize structures and prevent further injury.

First Advisor

Alma M. Flores

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