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1
Content available Mechanical Properties of Carbon Fiber Reinforced Materials for 3D Printing of Ankle Foot Orthoses
Rybarczyk Justyna, Górski Filip, Kuczko Wiesław, Wichniarek Radosław, Siwiec Sabina, Vitkovic Nikola, Păcurar Răzvan
Advances in Science and Technology. Research Journal
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2024
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Vol. 18, no 4
191--21
EN
The article presents analysis of mechanical properties of specimens fabricated by fused deposition modeling (FDM). The four of considered materials are the well-known 3D printing filaments i.e., polylactide (PLA), Nylon 12 (PA12), acrylonitrile butadiene styrene (ABS), polyethylene terephthalate glycol (PET-G). The other four of the considered materials are composites with carbon i.e. polylactide with carbon fiber (PLA-CF), Nylon 12 with carbon fiber (PA12-CF), acrylonitrile butadiene styrene with carbon fiber (ABS-CF), polyethylene terephthalate glycol with carbon fiber (PETG-CF). The paper describes how the specimens were designed, printed, subjected to tensile testing, and examined using microscopy. The obtained data will be used to select the optimum material for the rapid manufacture of lower limb orthoses. Carbon composites were found to have better mechanical properties of their base material, but the fabrication of composite samples is much more time consuming, for the reason that the manufacturing process is not stable.
2
Content available Narzędzie informatyczne wspomagające zarządzanie danymi klientów
Tomczak Aleksander, Dostatni Ewa, Górski Filip
Zarządzanie Przedsiębiorstwem
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2023
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Vol. 26, nr 1
26--32
EN
The article describes an example of using a database application to manage customer data in an organization producing products to individual customer orders. The research were carried out in the department of production engineering at the Poznan University of Technology, who conducts research regarding the creation of individual prostheses and ortheses for patients with limb disfunctions. The developed database application with its functionality is included in the area of crm it solutions. The application is an extension of the automedprint system, which is used for fast, automatic designing and manufacturing of prostheses and orthetizes by 3d printing. In automedprint, data concerning clients, products and production orders are saved in different folders, which makes the management of these data very hard. Reason for this, a solution which enables accelerating editing, searching, sorting of data, and therefore providing in a short time information on the status of implementation of individual orders, has been developed.
3
Content available Manufacturing of thin-walled, complex polymer parts by DLP printing – the influence of process parameters on crosslinking density
Tomczak Dorota, Wichniarek Radosław, Kuczko Wiesław, Górski Filip
Bulletin of the Polish Academy of Sciences. Technical Sciences
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2023
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Vol. 71, nr 4
art. no. e145936
EN
This study investigated the relationship between the parameters of the DLP manufacturing process and the structure of photopolymerizable acrylic resins. Four different process parameters were established to produce different thin-walled acrylic sample series: exposure time, layer thickness, area offset, and number of transition layers. The structure and the surface of the obtained samples were examined with the use of the FTIR–ATR method and an optical microscope, respectively. It was proved that extension of the exposure time increases the density of crosslinking and sample thickness. A decreasing crosslinking density due to rising layer thickness is observed. The area offset affects only the dimensions of the sample, predictably reducing the dimensions of the sample as the compensation increases. The absence of transition layers proved unfavorable in many respects, both structurally and geometrically.
4
Content available Low cost avionics system for ultralight aircraft
Górski Filip, Inglot Dawid, Wojnar Rafał, Kopecki Grzegorz
Journal of KONBiN
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2022
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Vol. 52, iss. 1
1--10
EN
The article presents a low cost avionics system for ultralight aircraft and paraplanes. The system contains Attitude and Heading Reference System, Air Data Computer and Primary Flight Display. Communication between units is via Wi-Fi. In the article design description was presented, as well as laboratory tests results. They are promising and the system is ready for in flight testing.
PL
Artykuł przedstawia niskobudżetowy system awioniki dla samolotów ultralekkich i paraplanów. W jego skład wchodzą AHRS, centrala areometryczna oraz wyświetlacz parametrów lotu. Komunikacja pomiędzy modułami została zrealizowana z wykorzystaniem modułów Wi-Fi. W artykule przedstawiono rozwiązania konstrukcyjne oraz wyniki testów laboratoryjnych. Wyniki wstępnych badań są obiecujące i system jest gotowy do realizacji badań w locie.
5
Content available Risk Assessment of Individualized 3D Printed Prostheses Using Failure Mode and Effect Analysis
Górski Filip, Sahaj Natalia, Kuczko Wiesław, Żukowska Magdalena, Hamrol Adam
Advances in Science and Technology. Research Journal
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2022
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Vol. 16, no 4
189--200
EN
Risk analysis of personalized medical devices, such as prostheses, is a challenging task due to the complexity of technological and geometrical issues. The paper undertakes a process of risk analysis for upper limb prostheses for adult patients, individualized by 3D scanning and produced by additive manufacturing. The analysis was performed to systematize the process and its steps, as well as diagnose certain problems, in order to achieve future devices with correct fit and function, produced in as few iterations as possible. The Failure Mode and Effect Analysis of Process (PFMEA) method was used. In the results, main process risks were identified: the problems are mostly caused in stages, where operator’s decision or activity is to be performed, regarding socket length, offset and suitable lining. The main prevention activities were determined – human involvement in the decision process should be minimal and the intelligent models should be adjustable to as many patient cases as possible. In consequence, future steps for process optimization were determined – larger base of patient cases is necessary to acquire and study, to gather data for model and process improvement.
6
Content available Mechanical properties and geometric accuracy of angle-shaped parts manufactured using the FFF method
Kuczko Wiesław, Hamrol Adam, Wichniarek Radosław, Górski Filip, Rogalewicz Michał
Bulletin of the Polish Academy of Sciences. Technical Sciences
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2021
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Vol. 69, nr 3
art. no. e137387
EN
The paper presents the results of research on the influence of the parameters of Fused Deposition Modelling (FDM) on the mechanical properties and geometric accuracy of angle-shaped parts. The samples were manufactured from acrylonitrile butadiene styrene (ABS) on a universal machine. A complete factorial experiment was conducted. The results indicated that the critical technological parameter was the angular orientation of the sample in the working chamber of the machine. The results were compared with the results of research performed on simple rectangular samples. A significant similarity was found in the relationships between the FDM parameters and properties for both sample types.
7
Content available Rapid Manufacturing of Individualized Prosthetic Sockets
Górski Filip, Suszek Ewa, Wichniarek Radosław, Kuczko Wiesław, Żukowska Magdalena
Advances in Science and Technology. Research Journal
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2020
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Vol. 14, no 1
42--49
EN
The paper presents the experimental process of manufacturing individualized prosthetic sockets out of thermoplas‑ tic material, using an additive manufacturing technology of Fused Deposition Modelling. The patient was an adult male with an amputated forearm. His stump was 3D scanned using a low‑cost 3D scanner in a semi‑automated manner. Then, the anthropometric data was used for the creation of a model of a prosthetic socket, which was subsequently manufactured. Three different 3D printers were used, with three different materials (ABS, nylon and PC) and three different sets of process parameters. The paper contains the descriptions of the process, its results and opinions by the patient, leading to the selection of an optimal process course variant.
8
Content available Modern Reverse Engineering Methods Used to Modification of Jewelry
Kroma Arkadiusz, Adamczak Oliwia, Sika Robert, Górski Filip, Kuczko Wiesław, Grześkowiak Krzysztof
Advances in Science and Technology. Research Journal
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2020
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Vol. 14, no 4
298--306
EN
The article presents the results of research aimed at redesigning a jewelry product with the use of modern reverse engineering methods. A detailed review of the literature was conducted and the essence of the application of this technology in the era of Industry 4.0 was presented. The 3D digitization of the research object was performed with the use of Aicon SmartSCAN-HE R8 and DAVID-SLS3 scanners. The obtained better quality file was edited in Autodesk Meshmixer 3.5 software. On the basis of the created model, a 3D print was made using FDM (Fused Deposition Modeling) and DPP (Daylight Polymer Printing) technology with two different materials – HIPS (High Impact Polystyrene) and photopolymer casting resin. The final stage of the work was the measurement of the surface roughness of the B101 (CuSn10P) tin-phosphorus alloy castings made using the method of investment casting.
9
Content available Accuracy and Repeatability of Limb Scans Obtained on the Semi-Automatic Measuring Station
Wichniarek Radosław, Górski Filip, Kuczko Wiesław, Żukowska Magdalena
Advances in Science and Technology. Research Journal
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2020
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Vol. 14, no 4
220--228
EN
Designing individualized medical devices requires the collection of anthropometric data from the patient. This can be done by using the 3D scanning process. Despite many advantages, it has significant drawbacks, limiting the suitability of its use for many types of medical devices. This paper presents the design of measuring station that allows increasing the quality of the anthropometric data obtained in the scanning process of human limbs. The accuracy and repeatability of the data obtained on the station was presented and compared to reference scans. Moreover, owing to the automation of certain activities in the scanning process, operating the device requires the operator to have much lower competencies and workload.
10
Content available Prototyping of an Individualized Multi-Material Wrist Orthosis Using Fused Deposition Modelling
Górski Filip, Kuczko Wiesław, Weiss Weronika, Wichniarek Radosław, Żukowska Magdalena
Advances in Science and Technology. Research Journal
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2019
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Vol. 13, no 4
39--47
EN
The paper presents the design and manufacturing process of an individualized wrist orthosis. The patient’s upper limb was 3D scanned and the orthosis was designed using a CAD system. Each part of the orthosis consists of two different materials that fulfill different functions. By using the double-head Fused Deposition Modelling machine it was possible to produce these parts in a single process without the need for additional assembly operations. The orthosis has been tested for mutual fit of parts, strength and comfort of use.
11
Content available Methodology of Low Cost Rapid Manufacturing of Anatomical Models with Material Imitation of Soft Tissues
Żukowska Magdalena, Górski Filip, Wichniarek Radosław, Kuczko Wiesław
Advances in Science and Technology. Research Journal
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2019
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Vol. 13, no 4
120--128
EN
The pre-operative preparation of a surgeon is increasingly often extended to individual patient’s anatomical models depicting the affected organ and the existing lesion in relation to the surrounding structures (e.g. blood vessels). Among the models, there are models of the skeletal system, in which the FFF technology is used. The models of parenchymal organs are more difficult to reproduce due to the material limitations in the FFF technology, which is why alternative technologies such as PolyJet and SLA are used. Due to the high price of models, they are employed less frequently, especially in the Polish hospitals. The research presented in the article deals with the modification of the existing methodology of rapid pre-operative models production with the use of various low-budget rapid manufacturing techniques, which use materials of low hardness, similar to the human soft tissues. The aim was to create a methodology and determine the parameters of materials that allow for the cheap production of functional pre-operational aids.
12
Content available Influence of sterilization of a product manufactured using fdm technology on its dimensional accuracy
Kuczko Wiesław, Wichniarek Radosław, Górski Filip, Banaszewski Jacek
Advances in Science and Technology. Research Journal
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2018
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Vol. 12, no 1
74--79
EN
Inter-operational surgery supplies manufactured additively using the FDM (Fused Deposition Modelling) technology are required to be sterilized before use. After manufacturing, the part should be sterilized using one of commonly used processes, without losing its dimensions and shape. The paper presents studies on manufacturing and sterilizing samples made out of ABS material and influence of the sterilization process on the dimensional accuracy of these samples.
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