Bending and Compression Properties of ABS and PET Structural Materials Printed Using FDM Technology

Abstract

The bend and compression mechanical properties of 3D-printed polyethylene terephthalate (PET) and acrylonitrile butadiene styrene (ABS) rectangular and cylindrical specimens (fully-dense and with circular, hexagonal, and rectangular perforations) are presented. In three-point bending, fully-dense PET flexural strength was 69 MPa, yield stress was 48.9 MPa, and yield stress from compression was 31.4 MPa. For ABS, these values were 59, 41.7, and 51.2 MPa, respectively -not significantly different from those of polymers manufactured by common techniques. Whereas perforation reduced density, the strength values were significantly lower, decreased for the circular perforation to a value of 20% strength for the fully-dense specimen. Specific strengths dropped quite significantly for the specimens tested in bending, whereas they did not differ significantly when tested by compression.

Peningkatan Kekuatan Lentur Produk 3d Printing Berbahan Petg Dengan Optimasi Parameter Proses Menggunakan Metode Taguchi

“…Szczepanik, dkk [7] melakukan perbandingan kekuatan lentur dari berbagai infill patern yaitu solid, polygonal, square dan circular dengan bahan PET. Hasil yang didapat menunjukkan kekuatan lentur berturut-turut adalah 69 MPa, 33 MPa, 37 MPa dan 10,7 MPa.…”

Recent advances in the construction of sustainable asphalt roads with recycled plastic

“…One of the main challenges of incorporating PET and ABS particles in asphalt mixes remains the compaction of asphalt due to the natural viscoelastic properties of PET and ABS. The compressive strength and elastic deformation of ABS are typically higher than those of PET due to the presence of styrene groups in ABS, 36 which explains the tendency of ABS to expand after compaction in ABS‐modified asphalt and of PET to reduce the compactability of PET‐modified asphalt when used at high contents (>4 wt% per mass of the asphalt mix) 18 . The size and shape of these plastics must also be carefully considered because plastic particles can only replace aggregates of the same size range and shape to ensure that the void content of the asphalt mix is consistent with the required standards, the mixture is workable and the durability of the asphalt is maintained 37 .…”

Numerical and Experimental Investigation of the Effect of Delamination Defect at Materials of Polyethylene Terephthalate (Pet)produced by Additive Manufacturing on Flexural Resistance

“…The bending moment at the midpoint of the beam surface is equal to the maximum stress. When the force reaches the load at the breaking moment, it is calculated from equation (1). No bending moment can be found if the material is not broken or completely damaged.…”

“…The increase in the variety of materials used in additive manufacturing methods and the determination of the mechanical behaviour of the parts produced by this method ensure widespread use in creating final pieces. Additive manufacturing methods, which were previously used in the production of pre-trial parts, allow usage in many different fields thanks to the developments in equipment technologies and advances in materials science [1]. Additive manufacturing has an increasing share among the production methods of polymer materials.…”

“…These studies guide the parameters to be used in the production of PET/PETG products with FFF. Szczepanik et al [1], investigated the bending and compression mechanical properties of PET and Acrylonitrile Butadiene Styrene (ABS) specimens produced as circular and rectangular patterns with a 3D printer. Sepahi et al [16], compared the mechanical properties of PETG specimens produced by the FFF method with PLA and ABS specimens While PETG material has the similar tensile strength to PLA and ABS, it has been determined that its ductility is higher.…”