The present study focuses on maximum compressive force of honeycomb structures produced from polylactic acid (PLA) and acrylonitrile butadiene styrene filament using an Ultimaker hot plate 3D printer. A honeycomb structure with an equal surface area and three different cell sizes and wall thickness was designed. The samples were produced with a cell width (d) of 6 mm, 9 mm, 12 mm, a cell wall thickness (t) of 0.8 mm, 1.2 mm, 1.6 mm and a cell height (h) of 10 mm, 20 mm and 30 mm for each cell width, respectively. The produced samples were weighed in order to calculate their porosity percentages. During the compression test, the highest compressive force was obtained from the samples produced from PLA filament with a cell height of 10 mm, a width of 12 mm and a wall thickness of 1.6 mm. Similarly, a detailed finite elements analysis of three structures with different cell widths and thicknesses using ANSYS® software yielded results similar to the experimental study. ANSYS® results were reliable in the range of approximately 81–98%. Thus, although the cell width in honeycomb structures with an equal surface area was increased using both experimental and finite elements method, it was observed that the wall thickness was directly proportional to a higher maximum compressive force.

Honeycomb structures are frequently used in many constructions today. For this reason, the investigation of the mechanical properties of products produced from honeycomb structures is a current issue. In this study, the bending strengths of sandwich structures with honeycomb core produced with a three-dimensional printer using ABS and PLA materials were experimentally investigated. In the experiments, the effect of the cell diameter change of the honeycomb core on the bending strength was investigated experimentally in the sandwich structures. For this purpose, experiments were carried out for three different cell diameters. A total of eighteen three-point bending tests were applied, with each experiment repeated three times. In addition, positioning equipment has been specially designed and produced to increase the reliability of the experiments. As a result of the experiments carried out, force-elongation curves were obtained. It has been determined that the samples produced from PLA material are more durable than ABS samples. In addition, it was determined that the samples with a cell diameter of 9 mm had the highest strength, while the samples with a cell diameter of 12 mm had the lowest strength for both materials.

Honeycomb structures are frequently used in many constructions today. For this reason, the investigation of the mechanical properties of products produced from honeycomb structures is a current issue. In this study, the bending strengths of sandwich structures with honeycomb core produced with a three-dimensional printer using ABS and PLA materials were experimentally investigated. In the experiments, the effect of the cell diameter change of the honeycomb core on the bending strength was investigated experimentally in the sandwich structures. For this purpose, experiments were carried out for three different cell diameters. A total of eighteen three-point bending tests were applied, with each experiment repeated three times. In addition, positioning equipment has been specially designed and produced to increase the reliability of the experiments. As a result of the experiments carried out, force-elongation curves were obtained. It has been determined that the samples produced from PLA material are more durable than ABS samples. In addition, it was determined that the samples with a cell diameter of 9 mm had the highest strength, while the samples with a cell diameter of 12 mm had the lowest strength for both materials.

Bal peteği sandviç kompozitler birçok sektörde yaygın olarak kullanılmaktadır. Sandviç kompozitlerin kullanım amaçlarına uygun karşılaşabileceği düşük hızdaki darbelerden kaynaklanan darbe dayanımlarının tespit edilmesi önem arz etmektedir. Bu çalışmada üç farklı hücre genişliği ve hücre duvar kalınlığındaki bal peteği geometrileri kullanılarak 3 boyutlu yazıcıda polilaktik asit (PLA) filamentten üretilen çekirdeklerin alt ve üst yüzeyleri karbon fiber takviyeli kompozit plakalarla (CFRP) yapıştırıcı ile birleştirilen sandviç kompozitlerin düşük hızda darbe performansları araştırılmıştır. Çalışmada üç farklı hücre genişliği ve hücre duvar kalınlığı sırasıyla 6_0,8mm, 9_1,2mm ve 12_1,6mm ölçülerindeki bal peteği geometrileri kullanılmıştır. Düşük hızda darbeye maruz bırakılan numunelerde eşit yüzey alanı elde etmek amacıyla hem hücre genişliği hem de hücre duvar kalınlıkları artırılarak bu ölçüler tercih edilmiştir. Her bir geometrideki ölçülerde üretilen bal peteği sandviç kompozit numunelere beş farklı enerji seviyelerinde (30J, 40J, 60J, 80J ve 100J) düşük hızda darbe testleri uygulanmış, 100J darbe enerjisinde sandviç kompozitler tamamen delinmiştir. Birbirine yakın yüzey alanına sahip üç farklı hücre genişliği ve hücre duvar kalınlığındaki sandviç kompozitlerin darbeye karşı benzer performans gösterdiği tespit edilmiştir.