Bending Strength Tests Research Articles

The Study of the Glass Fiber Surface Treatment Effect on the Base Strength Characteristics of the Composite Material

This article examines the impact of surface treatment of glass fibers on the strength of a composite material with an unsaturated polyester polymer matrix reinforced with glass fibers. The strength tests conducted include tensile, bending, and impact strength tests, as well as weight loss measurements. The research was conducted in two stages: in the first stage, the time was kept constant while the fibers were treated with varying concentrations of an alkaline NaOH solution; in the second stage, the concentration was fixed and the variable parameter was the treatment time. The results of the study indicate that surface treatment of glass fibers significantly improves their adhesion to the matrix materials, resulting in improved strength test results for the composite samples. The impact resistance, bending resistance, and tensile strength values all increased compared to the reference samples. However, certain changes in the individual parameters of fiber processing led to a slight decrease in tensile strength when it fell below the reference values. Additionally, it was observed that as the concentration of the solution and treatment time increased, the weight of the fibers decreased.

A study on GCCM (geosynthetic cementitious composite mat) performance improvement by structural composition of woven geotextiles

By applying ‘yarn inlay’ technology using reinforcing fibers, a double raschel GCCM that improved the structural elongation control and reinforcement ability of knitted fabrics was manufactured. In order to improve the cross-sectional reduction of GCCM due to curing shrinkage of concrete, the effects of blowing agent content and concrete filling rate were analysed as a result of the bending strength test, Double raschel GCCM showed the improved brittleness compared to that of general concrete. In addition, it was confirmed that the durability of Double Cell GCCM did not decrease significantly even after 10 days of concrete curing. Finally, the bending strength in special environments such as seawater, freeze-thaw, acidic and alkaline solutions was analysed, and the durability of double raschel GCCM in application environments was confirmed.

Gama-aminopropiltrietoksisilan ile Modifiye Edilmiş Kayın ve Göknarın Fiziksel, Mekanik ve Biyolojik Özellikleri

Silanes have potential for modifying wood materials to improving their properties. The aim of this study was to determine the physical and mechanical properties of beech (Fagus orientalis Lipsky) and fir (Abies bornmülleriana Mattf.) wood samples impregnated with gamma-aminopropyltriethoxysilane (APTES) as well as their performance against decay fungi. Beech and fir wood samples were impregnated with APTES at 20% and 40% concentrations. Control and treated samples were subjected to water uptake, bending strength and thermogravimetric analysis (TGA) tests as well as exposure to the white-rot fungus Trametes versicolor and the brown-rot fungus Coniophora puteana. Weight percentage gain (WPG) was higher in fir samples than in beech samples after APTES treatment. Water uptake was higher in fir samples than beech for control and impregnated samples. Water uptake decreased with higher APTES concentrations. APTES treatment slightly increased modulus of rupture (MOR) and modulus of elasticity (MOE). Mass loss caused by decay fungi was much lower in APTES treated timbers.

Effect of impregnation with diammonium phosphate and sodium silicate on some physical and mechanical properties of modified laminated veneer lumber made of jabon wood

Laminated veneer lumber (LVL) and laminated veneer board (LVB) panels from jabon wood (Neolamarckia cadamba) were impregnated with fire retardation substances, namely diammonium phosphate (DAP) and sodium silicate (SS). Prior to testing, the boards were conditioned in relative humidity (RH) of 65% and a temperature of 25 °C. The moisture content (MC), bending strength tests in flat wise position, and bonding tests were conducted in accordance with the Japanese Agricultural Standard (JAS:2008). Density tests and hardness tests were conducted in accordance with ASTM D143 standard (2003) in 50 mm x 50 mm. Thickness-swell shrinkage tests were conducted in accordance with the standard BS EN 317:1993, and fire resistance was tested under PS 1-19 standard. The use of 20% DAP and SS solution on jabon wood using impregnation methods affected some of the properties of the panels, especially the moisture content, density, and bonding strength of LVL and LVB compared to the control panels. Both DAP and SS impregnation increased the density. The treatments showed promise for resisting fire, as well as increasing the moisture content and increasing the density compared to the control.

The synergistic flame retardant effect of biobased phytic acid arginine salt and hydroxylated montmorillonite in polybutylenes succinate

In this research, hydroxylated nano montmorillonite (DK2) was used as a synergistic agent in combination with phytic acid arginine salt (PaArg). The flame retardancy and mechanical properties of PBS with different amounts of PaArg and DK2 were studied. Furthermore, the synergistic effect and mechanism of PaArg and DK2 in PBS were explored. The results showed that adding 23.5 % PaArg and 1.5 % DK2 increased the limiting oxygen index value (LOI) of the composite to 31.4 %, passing the UL 94 V-0 rating. By adding 25 % PaArg alone, the LOI value of the composite is 26.2 %, and the vertical burning test result is only V-2 rating. The cone calorimetry test results show that the peak heat release rate, total heat release rate, and total smoke production of PBS/23.5 % PaArg/1.5 % DK2 composite are 55.8 %, 17.1 %, and 44.7 % lower than those of PBS/25 % PaArg composite, respectively. All the results showed that PaArg and DK2 exhibited good synergistic flame retardancy in PBS. In addition, the impact strength and bending strength test results show that the impact strength and bending strength of PBS/23.5 %PaArg/1.5 %DK2 composite are higher than those of PBS/25%PaArg composite. This work improved the flame retardant efficiency of biobased flame retardants in PBS.

Performance of fibre-reinforced landfill mined soil like fraction as an environment friendly fill material

Landfill mining is emerging as an effective strategy towards mitigation of the problems associated with legacy landfills. About 40–80% of the landfill mined waste is soil-like fraction (landfill mined soil like fraction, LMSF) that is obtained after removing the combustibles and recyclables. However, due to its lower calorific value and presence of organic content, LMSF has not found many applications except landfill cover material and filling of low-lying areas. In this context, the present study explores the strength properties of LMSF with and without fibres (coir and polypropylene fibres) through unconfined compression, direct shear, UU triaxial, cyclic UU triaxial, indirect tension and bending strength tests. Overall, the shear strength properties of LMSF are similar to sand with some cohesion. Further, the performance of LMSF with optimum fibre proportion (2% for coir fibres and 1.5% for polypropylene fibres) is quite superior under monotonic and cyclic compressive loading conditions, as well as indirect tension and flexural loading conditions. An assessment of 1 m replacement of soft soil with LMSF with/without fibre reinforcement infers substantial increase in the allowable bearing pressure of LMSF. Overall, though LMSF may need assessment/pre-treatment (as required) due to presence of organic content and any possible heavy metal concentration, utilization of LMSF would encourage the adoption of landfill mining process. The current research insights contribute in the direction of achieving sustainable infrastructure development by reduction in the landfill area that would reduce the depletion of conventionally utilized natural resources for fill applications such as sand and gravel, and contribute positively towards environment.

Effect of recycled additives on pure mode I fracture resistance and moisture susceptibility of hot mix asphalt (HMA): An experimental study using semicircular bending (SCB) and indirect tensile strength (ITS) tests

Moisture susceptibility and cracking are considered as two major causes of distress in asphalt pavement, which are developed and expanded under environmental factors such as Freeze-Thaw Cycles (FTC) and traffic loading. These causes of distress may be controlled by improving two factors of bituminous phase cohesion and adhesion between aggregates and bitumen. This article was aimed to study the rheological properties of bitumen, such as rotational viscosity, as well as the mechanical properties of asphalt mixture, such as moisture susceptibility, fracture resistance, and fracture brittleness, by using two additives, carbon black and hydrocarbon, which were obtained from the pyrolysis recycling of hospital waste caused by Covid-19. In this regard, a total of 8 mixtures were made, including a mix without any additive, three mixes of 1.25, 2, and 2.75 % hydrocarbon, three mixes of 6, 12, and 18 % carbon black, and a mix of 2.75 % hydrocarbon + 18 % carbon black. In order to determine the effect of FTC on the asphalt samples and to adapt the laboratory conditions to the road conditions, 1 and 3 cycles of Freeze-Thaw Damage (FTD) were applied, respectively, indicating 4 and 12 years of pavement distress. The results showed that the addition of different percentages of carbon black and hydrocarbons (separately and together) through improving bituminous phase cohesion and adhesion between aggregates and bitumen increased the samples resistance to the moisture susceptibility. It was also found that fracture energy (GF) and fracture toughness (KIC) of all mixes improved compared to the base sample. At last, the results of brittleness indicators revealed that all mixes containing 6, 12, and 18 % carbon black and 1.25, 2, and 2.75 % hydrocarbon had a more flexible behavior than the base mix under 1 cycle of FTD; while the mixes containing 18 % carbon black and 2.75 % hydrocarbon were just flexible under 3 cycles of FTD. Accordingly, it can be concluded that a mix containing 2.75 % hydrocarbon + 18 % carbon black had the best results in terms of viscosity, moisture susceptibility, and fracture resistance (under 1 and 3 FTD cycles).

Investigation on fracture and fatigue performance of cold recycling emulsified asphalt mixture based on acoustic emission parameters

Cold recycling technique of asphalt reduces the demand for building materials, saves resources and costs, and meets the requirements of low-carbon and high-quality development. The purpose of this study is to improve the fracture and fatigue performance of cold recycling emulsified asphalt mixture. In this paper, cold recycling ordinary, basalt fiber (BF) emulsified asphalt mixture and cold recycling styrene butadiene rubber (SBR) modified emulsified asphalt mixture were taken as the research objects. Four-point bending strength and fatigue tests of specimens with and without prefabricated cracks were carried out respectively, and acoustic emission (AE) was used for real-time monitoring during these tests. The fracture mechanics method was used to study the fracture strength of cold recycling ordinary, BF and SBR modified emulsified asphalt mixtures. The phenomenological theory and energy analysis method were adopted to research their fatigue performance. The characterization parameter analysis method was employed to analyze the AE parameters. Furthermore, the effect of BF and SBR on the performance of the mixture was compared and analyzed. The test results show a significant improvement in the fracture energy and stress intensity factor of cold recycling BF and SBR modified emulsified asphalt mixtures, indicating that both BF and SBR can reduce the cracking risk of cold recycling emulsified asphalt mixture, of which BF is more effective compared with SBR. The dynamic modulus and cumulative dissipation energy attenuation law of cold recycling emulsified asphalt mixture during the fatigue process were revealed. Based on AE technique, a nondestructive test method for the fatigue damage of cold recycling emulsified asphalt mixture was established. This study expands the application scope of cold recycling emulsified asphalt mixture, which has good energy-saving, economic and environmentally friendly benefits.

Mineralogical and Physico-Chemical Characterization of Arslanlar Clay for Potential Industrial Applications

This paper is a study from mineralogical and physico-chemical points of view about the possibility of using Arslanlar clay in tile and brick industry. Firstly, chemical analysis, X-ray diffraction (XRD), differential thermal analysis/thermogravimetry and plasticity measurements were performed to determine the unfired characterization of the clay sample. It was observed that illite, smectite, kaolinite, calcite, hematite, orthoclase and quartz were the main minerals. Plasticity tests revealed that Arslanlar clay was very high plastic clay. Then the clay test samples were prepared by pressing and firing separately at temperatures between 850° and 1100°C to evaluate physicochemical characteristics. Water absorption, linear shrinkage, bulk density, bending strength tests and colour measurement were performed. Also the fired samples were analyzed by XRD and scanning electron microscopy. It was observed that the porosity decreased and the densification increased with increasing temperature, especially above 1050°C. Evaluations concluded that this clay can be used in production of structural ceramics and also pottery.

“Generating a eco friendly reinforced composite using human hair and analyzing it for commercial use”

This paper delves into the development and characterization of natural hair fiber-reinforced polymer composites, with a focus on their physical and mechanical attributes. Composite materials encompass ceramic matrix composites (CMC), metal matrix composites (MMC), and polymer matrix composites (PMC), with PMC being favored for its cost-efficiency and ease of production, notably employing thermoplastic polymers for recyclability. Natural fibers are gaining traction, especially in the automotive industry across Asia and Europe, due to their low density and environmental friendliness. Human hair stands out as a reinforcing material owing to its impressive tensile strength, sustainability, abundance, and keratin content. The paper addresses challenges linked to natural fibers in composites, including moisture resistance and dimensional availability. The research involves creating composites using human hair fibers, epoxy resin (polypropylene), and specific molds, varying hair fiber percentages. Detailed methodology covers materials, equipment, mold prep, specimen prep, and mathematical modeling. Tensile, flexural bending, and impact strength tests reveal insights into composite mechanics. Hair fiber additions strengthen the polymer matrix, particularly at 5 to 15 weight percentages, though flexural strength diminishes compared to non-reinforced composites. Higher hair fiber percentages enhance hardness. In conclusion, this study showcases human hair fiber's potential as a reinforcement in polymer composites, emphasizing the need for further exploration of matrix-fiber adhesion to boost composite performance. These findings contribute to the growing interest in natural fiber composites for sustainable and economical applications.

Komparasi sifat mekanik antara komposit epoksi berpenguat abu dan sekam padi

Indonesia is an agricultural country because most of the population works in the agricultural sector. One of them is from agricultural products, namely rice. The milled rice produces rice and rice husks. Rice is used by the people of Indonesia as a staple food. Meanwhile, rice husks and ashes have not been utilized optimally. Seeing the great potential of rice husk and ash, efforts have been made to optimize the use of rice husk and ash as composite materials. The research aimed to obtain tensile strength, bending strength and porosity analysis of each composite using 230 mesh size rice husk particles or rice husk ash. The different volume fraction variations are 25% rice husk particles or its ashes and 75% epoxy matrix for the first variation, while for the second variation, it is 40% rice husk particles or its ashes and 55% epoxy matrix. The process of making composite materials was carried out using the hand lay-up and vacuum bag method with the test sample size according to the test standards used, namely ASTM D3039 for tensile strength testing and ASTM D790-61 for bending strength testing. The results of the mechanical properties test obtained the greatest tensile strength value in the epoxy composite reinforced with rice husk ash (40% wt) of 12.73 MPa and the greatest bending strength was in the epoxy composite reinforced with rice husk (40% wt) of 63.87 MPa. Preliminary characterization of rice husk and ash-reinforced epoxy composites met SNI standards.

Predicting fatigue damage growth in cement-treated base layer built with construction and demolition waste

Fatigue damages of cement-treated construction and demolition waste (CDW) aggregate base materials were predicted using a nonlinear elastic-damage model coupled with a finite element (FE) program. CDW with two different gradations (BC1 and BC2) and one control cement-treated base material using quarried aggregate (N1) were tested. Three-point bending strength and fatigue tests were conducted to obtain the fracture property of the three base materials and inputs of the proposed nonlinear elastic-damage model. Pavement structures with the three base layers were modelled by FE simulations, to evaluate the mechanical and cracking performance under three different vehicle load levels of 700 kPa, 840 kPa and 1050 kPa, respectively. The result of experiments shows that the BC1 with a skeleton-dense gradation has the highest fracture strength, which was followed by the N1, and is much higher than the BC2. In the FE simulations, the proposed nonlinear elastic-damage model can well reflect the damage evolution and modulus distribution of cement-treated base layers under vehicle loading. With the accumulation of vehicle loading cycles, the damage of base layers increases, and pavement structure with the BC2 base layer shows the fastest damage evolution. Besides, the stress-dependent modulus shows a non-uniform distribution in the base layers, presenting very high values at the surface and bottom of the base layer due to the high compressive stress and tensile stresses.

Hygrothermal and strength properties of cement mortars containing cenospheres

This study characterizes the hygrothermal and microstructural properties of cement composites containing aluminosilicate cenospheres. It involved the preparation of six mortar mixtures based on CEM I 42.5R cement, in which cenospheres accounted for 0 to 100 % of the aggregate content. The research included measurements of thermal properties, compressive and bending strength tests, density tests on the cured mortars, determination of pore distribution and total porosity, and qualitative assessment of the cenosphere-cement matrix contact zone. However, the main emphasis was on moisture-related parameters. The publication discusses the effect of using cenospheres as a substitute for natural sand on water absorption, capillary absorption, and the sorption and desorption of water by the tested composites, along with the influence of individual microstructural properties on moisture properties. The results showed that increasing the amount of cenospheres added as a sand substitute contributed to an increase in the water absorption of the composite and in parallel reduction in the capillary rise coefficient. The increase in the content of cenospheres caused also a clear increase in the sorption capacity of mortars. Moreover as the statistically average distances between the pores decreased, the thermal conductivity of the composites also decreased. Both when considering the porosity and the spacing factor, the conductivity decrease with wet composites was faster than with dry ones. With decreasing distances between the pores, the compressive strength also decreased significantly. Higher content of cenospheres also reduced the density of the composite and at the same time, increased the specific surface area, which contributed to the reduction in the capillary absorption coefficient and the increase in the durability of the entire composite. In addition, relatively good insulating properties of these composites (λ as low as 0.25 W/mK) in comparison to ordinary cement-based mortars make them interesting alternative to traditional solutions, while the appropriate mechanical strength (compressive strength in the range of 37.68 to 17.74 MPa) makes them suitable even for use as structural elements.

Analysis of the Stress Field in Photoelasticity Used to Evaluate the Residual Stresses of a Plastic Injection-Molded Part.

The degree of quality of thermoplastic injection-molded parts can be established based on their weight, appearance, and defects. However, the conditions of the injection process may induce effects on the mechanical performance of the injected parts, and the residual stresses can cause cracks or early failures when an external load or force is applied. To evaluate these mechanical behaviors, different experimental techniques have been reported in the literature, where digital photoelasticity has stood out both for being a non-contact technique and for achieving quantitative results through sophisticated computational algorithms. Against this background, our proposal consists of analyzing the overall residual stress distribution of parts injected under different molding conditions by using digital photoelasticity. In this case, the specimens are subjected to bending strength tests to identify possible effects of the injection process conditions. The findings show that, at mold temperatures of 80 °C, flow-induced residual stresses increase with packing pressure. However, these internal stress levels do not affect the external load applied by the mechanical bending test, while the mass injected at higher levels of packing pressure helps to increase the bending strength of the injected part. At lower mold temperatures (50 °C), the mechanical strength of the injected part is slightly reduced, possibly due to a lower effect of the packing pressure.

Aluminium Matrix Composite Materials Reinforced by 3D-Printed Ceramic Preforms.

This article employed the fused deposition modelling (FDM) method and gas-pressure infiltration to manufacture alumina/AlSi12 composites. Porous ceramic skeletons were prepared by FDM 3D printing of two different alumina powder-filed filaments. The organic component was removed using a combination of solvent and heat debinding, and the materials were then sintered at 1500 °C to complete the process. Thermogravimetric tests and DTA analysis were performed to develop an appropriate degradation and sintering program. Manufactured skeletons were subjected to microstructure analysis, porosity analysis, and bending test. The sintering process produced porous alumina ceramic samples with no residual carbon content. Open porosity could occur due to the binder's degradation. Liquid metal was infiltrated into the ceramic, efficiently filling any open pores and forming a three-dimensional network of the aluminium phase. The microstructure and characteristics of the fabricated materials were investigated using high-resolution scanning electron microscopy, computer tomography, hardness testing, and bending strength testing. The developed composite materials are characterized by the required structure-low porosity and homogenous distribution of the reinforcing phase, better mechanical properties than their matrix and more than twice as high hardness. Hence, the developed innovative technology of their manufacturing can be used in practice.

Kajian Penggunaan Fly Ash Sebagai Pengganti Sebagian Semen Pada Beton Struktural

This study aims tofind out the effect of the use of fly ash as a substitute for part of cement onthe compressive strength and bending strength of structural concrete, as well as to find out the optimal composition of the use of fly ash so that maximum structural concrete strength is produced. The method used in this study is an experimental method. The study was designed with 5 treatments for concrete compressive strength test and 5 treatment for concrete bending strength test, each repeated 3 times. The treatment tested by beton with the use of fly ash as a substitute for cement as a substitute for cement 0%, 5%, 10%, 15% and 20%. The results showed that the use of fly ash as a substitute for part of cement affects thecompressive strength and bending strength of structural concrete, where there is an increase in compressive strength and bending strength in the use of fly ash 5% by producing a compressive strength of 5% 31.23Mpa and bending strength of 4.03 Mpa, there was also a decrease in compressive strength and bending strength in the use of fly ash of 10%, 15% and 20% by producing compressive strength of 29.74 Mpa, 28.15 Mpa and 26.78 Mpa, as well as producing concrete bending strength of 3.49 Mpa, 3.21 Mpa and 2.94 Mpa. The use of an optimum fly ash of 1.835% results in a maximum concrete compressive strength of 30.75 Mpa and a maximum concrete bending strength of 3.89 Mpa

Influence of Multiple Used Implant Drills on Their Cutting Performance and Fracture Resistance.

This study aimed to analyze the influence of multiple uses of zirconia implant drills on their cutting performance and bending strength. The hypothesis was that drill usage and sterilization cycles would not affect drilling time or flexural strength. Sixty zirconia twist drills from Z-Systems were used to drill in the angulus mandibulae region of fresh porcine jaws. The drills were divided into four groups based on the cycle count, and the drilling time was measured. Bending strength tests were conducted using a universal testing machine, and statistical analysis was performed using ANOVA tests. The results showed that drilling times followed a normal distribution, and significant differences were observed in drilling times between group 1 and the other groups for the pilot drill. However, no significant differences were found for ø3.75 mm and ø4.25 mm drills, and drilling times also varied significantly among different drill diameters, regardless of the cycle count. Flexural strength did not significantly differ among drill diameters or sterilization cycles. Overall, using and sterilizing zirconia implant drills had no significant impact on drilling time or flexural strength. Nevertheless, drilling times did vary depending on the diameter of the drill. These findings provide valuable insights into the performance and durability of zirconia implant drills, contributing to the optimization of dental implant procedures.

Delignified wood biocomposites as sustainable and transparent materials for passive cooling applications

ABSTRACT Wood possesses unique structural and functional properties that make it a promising material for the development of windows. In this study, the potential use of wood biocomposites as a window materials was explored by delignification of local Indonesian woods, such as mahogany (Swietenia macrophylla), sungkai (Peronema canescens), mindi (Melia azedarach), and maple (Acer laurinum), using NaOH and H2O2 followed by epoxy resin impregnation. Macroscopic observations, optical transmittance (τ), tensile and bending strength tests were performed to evaluate their optical and mechanical properties. An infrared exposure simulation was also conducted to assess the material passive cooling capabilities in a room model. The results revealed that mahogany and maple had the highest τ values (86.03% and 81.43%, respectively). Transparent mahogany wood exhibited haze due to optical scattering but showed strong mechanical properties with an ultimate tensile strength (UTS) of 78.83 MPa and a strain (ϵ) of 2.67%. Transparent maple wood had UTS of 84.67 MPa and ϵ of 2.32%. The use of transparent mahogany and maple in room model reduced the temperature difference between indoor and outdoor environments by up to 11.5°C and 10.5°C, respectively, which suggests that transparent wood can be used as a window material for sustainable passive cooling applications.

The Effect of SiC and MgO Ceramic Reinforcements on the Mechanical Behavior and Electrical Properties of the Composite Structure in Al7075/SiC/MgO Hybrid Composites

In this study, certain technical properties of new generation aluminum-based composites, obtained by combining the Al7075 alloy widely used in the industrial field with two different ceramics, were investigated. For this purpose, SiC and MgO ceramics in particle form were reinforced into the Al7075 matrix material using powder metallurgy technique and composite structures were produced in three different reinforcement ratios. Measurements to determine electrical resistance and conductivity and bending and compression strength tests were performed on the obtained composite structures. The density and porosity amounts of the composite structures were also determined, and their microstructures were examined with a digital microscope. With the increase of SiC/MgO amount in the aluminum composite structure, the electrical resistance increased, and the conductivity value decreased. With the effect of SiC/MgO reinforcing materials, the density value of the composite structures decreased while the amount of porosity increased. The hardness values increased due to the effect of SiC and MgO ceramics in the structure. The bending and compression strength values initially increased and then started to decrease with the increase of reinforcement ratios. It has been determined that the formation of porosity in the composite structure negatively affects the mechanical behavior. The second important factor was evaluated to be the amount and shape of ceramic-based reinforcement particles in the structure. Due to the effect of SiC, which has very high electrical resistance, and MgO, which has dielectric properties, the electrical conductivity values of the composite structures decreased. The increase in electrical resistance and the decrease in electrical conductivity were directly proportional to the amount of ceramic-based reinforcement particles in the composite structure.

Material Characteristic of an Innovative Stent for the Treatment of Urethral Stenosis

Abstract The appropriate development and customisation of the stent to the urethral tissues requires the determination of many factors such as strength and degradation. Given the distinctive conditions of urethral tissues, it is important that the design of the stent be properly developed. The selection of a stent material requires knowing its material characteristics and verifying that they are suitable for the future implantation site. In the present study, the development of a polydioxanone (PDO)-based stent was undertaken. The PDO material was fabricated using an additive technique – 3D printing. Then, in vitro tests were performed to determine the degradation time of the material under conditions simulating an aggressive urinary environment. The changes in the parameters of mechanical properties before and after the degradation period were determined, and the changes in the structure of the material before and after degradation were observed. Numerical analysis was performed for the proposed stent design. The results showed that PDO has good mechanical properties, but its degradation time is too short to be used in a urethral stent. Among the innovations of the studies conducted are bending strength tests, which is not a frequently considered aspect so far.