One of the advantages provided by fused deposition modelling (FDM) 3D printing technology is the manufacturing of product materials with infill structure, which provides advantages such as reduced production time, product weight and even the final price. In this paper, the tensile mechanical properties, tensile strength and elastic modulus, of PLA, Tough PLA and PC FDM 3D printed materials with the infill structure were analysed and compared. Also, the influence of infill pattern on tensile properties was analysed. Material testing were performed according to ISO 527-2 standard. All results are statistically analysed and results showed that infill pattern have influence on tensile mechanical properties for all three materials.

One of the advantages of FDM technology is the production of product materials with infill structure. In order to make the most of this advantage, the behaviour of FDM printed material with infill structure under different loads has to be analyzed and understood. Therefore, the goal of this experimental research is to analyze influence of infill density (100%, 80%, 60% and 20%) on tensile mechanical properties (tensile strength and elastic modulus) of PLA antibacterial nanocomposite, tough PLA and ABS-X 3D printed materials.

<p style="text-align: justify;">The aim of this paper is to present a sufficiently adequate and accurate mathematical model of the breaking force of a solid wood panel. For that purpose, an experiment with thirteen repetitions was designed and done. The input sizes that varied on three levels are the density of the wood and the thickness of the solid wood panel. Since the central composite plan with thirteen repetitions of the experiment also includes four repetitions in the marginal areas, two more wood densities and two solid wood panel thicknesses were taken. The force was measured in such a way that the plate fibers were parallel to the bending direction of the plate. The measurements were made in the laboratory of the Technical Faculty in Bihać. The significance of the model coefficients was determined using the R software and the results were presented using the Design Expert software.</p>

Widely used additive manufacturing technique for plastic materials is Fused Deposition Modelling (FDM). The FDM technology has gained interest in industry for a wide range of applications, especially today when large number of different materials on the market are available. There are many different manufacturers for the same FDM material where the difference in price goes up to 50%. This experimental study investigates possible difference in strength of the 3D printed PLA material of five different manufacturers. All specimens are 3D printed on Ultimaker S5 printer with the same printing parameters, and they are all the same colour.

Objective/Purpose: The purpose of this work was the assessment of the clinical efficacy and safety of Bioapigyn® vaginal ointment for pelvic muscle tonus compared to pelvic floor muscle training in alleviating the symptoms of stress, urge and mixed urinary incontinence and vulvo-vaginal disorders in child-bearing and menopausal & postmenopausal women. Materials and Methods: The experimental group consisted of 66 women was treated 28 days with Bioapigyn® ointment for pelvic muscle tonus (2.5 mL/day). The control group also consisted of 66  participants was subjected to pelvic floor muscle training during 28 days (five times a day). ICIQ-UI SF score, the residual urine volume, perineometry, the total score of vulvo-vaginal symptoms and vaginal pH were determined before and after the treatment or training. Results: Following the treatment with Bioapigyn® ointment ICIQ-UI-SF score decreased 54.9%, perineometry parameters  increased  between  31.5  and  34.3%,  residual  urine  decreased  for 76.9%  and  vaginal  pH  for 14.2%. All the symptoms of vulvo-vaginal disorders disappeared completely in all participants. The control group showed no changes in vaginal pH or the improvement concerning the vulvo-vaginal complaints. ICIQ- UI-SF score decreased for 4.3%, residual urine volume for 9.1% while perineometry parameters increased between 4.3 and 8.3%. Conclusion/Discussion: Bioapigyn® vaginal ointment for pelvic muscle tonus alleviate the symptoms of incontinence by tightening and firming of the smooth muscles of the pelvic floor thanks to the ingredients with smooth muscles contraction/relaxation and astringent properties. Low pH, high osmolarity, viscosity, greasiness and coating effect of the ointment eradicated vulvo-vaginal complaints.

<p style="text-align: justify;">The paper analyzes the behavior of the plastic container during the buckling, ie during the load effect on the containers. The analysis was experimentally performed on several different types of containers. The container material is polypropylene. Experimental determination of pressure force and corresponding deformation was performed in the<br />laboratory at the Faculty of Technical Engineering Bihać. The analysis includes experimental testing on assembled containers and on container side. Places where deformation occurs on the container sides are shown.</p>