Table 8 - uploaded by Solomon Ezeiruaku
Content may be subject to copyright.
Source publication
![Table 2 . A list of common materials and laser used in LCVD. From [107]](profile/Solomon-Ezeiruaku/publication/289539150/figure/tbl1/AS:670715867054085@1536922532362/A-list-of-common-materials-and-laser-used-in-LCVD-From-107_Q320.jpg)
3D printing, more professionally called additive manufacturing (AM) is a manufacturing technology (process) revolutionizing the world manufacturing industry. AM is a standard term adopted by the ASTM International Committee to include comprehensively methods that build 3D objects layer-by-layer using computer driven technology. It is completely dif...
Context in source publication
Context 1
... test models contain samples of geometric shapes and sizes that are commonly available on plastics, and most of these models have features with decreasing dimensions as shown in Figures 7-11 and Table 7. The models were produced with different process parameters to quantify a particular limitation as shown in Table 8. More importantly, these parameters were chosen to make this machine produce the best it can. ...
Similar publications
Aim:
The aim of this technical note is to present a computer-aided design-computer-aided manufacturing (CAD-CAM) surgical guide to perform a computer-guided bone biopsy. Traditionally, to diagnose abnormal conditions affecting jawbone, a bone biopsy is performed with the use of a trephine bur. The positioning of the bur, during the biopsy, is base...
![Technical specifications of Prusa İ3 3D Printer [10].](profile/Pinar-Demircioglu/publication/340876015/figure/tbl1/AS:883609854566403@1587680414557/Technical-specifications-of-Prusa-I3-3D-Printer-10_Q320.jpg)
The aim of this study is to investigate the relationship between the fusion temperature and dimensional
accuracy of the 3D printed components. The Computer Aided Design (CAD) model of specimens were
prepared using Autodesk Inventor Software. Then the models were exported to STL file format for rapid
prototyping. Prusa İ3 desktop type 3D printer wit...
The 3D Printer is an additive manufacturing technology which is developing now a days as it has the potential to change the manufacturing industry. It takes few hours to develop a new product with this technology which was completed in day, months, and years with traditional technology. This is how it changing the world and so new and better machin...
![Technical specifications of Prusa İ3 3D Printer [12].](profile/Pinar-Demircioglu/publication/340875902/figure/tbl1/AS:11431281205049116@1700086083262/Technical-specifications-of-Prusa-I3-3D-Printer-12_Q320.jpg)
![Technical Specifications of EMCO-TEST DuraScan micro hardness machine [14].](profile/Pinar-Demircioglu/publication/340875902/figure/tbl2/AS:11431281205049117@1700086083386/Technical-Specifications-of-EMCO-TEST-DuraScan-micro-hardness-machine-14_Q320.jpg)
The aim of this study is to search out the effects of the infill type and density on hardness of themanufactured components with rapid prototyping technique. Computer Aided Design (CAD) models ofspecimens were prepared using Autodesk Inventor Software. Then the models were exported as STL fileformat for rapid prototyping. Disc shape specimens were...
Background:
Three-dimensional printed models are increasingly used in many fields including medicine and surgery, but their use in the planning and execution of complex chest wall reconstruction has not been adequately described. In cases of non-union or prior attempts at chest wall reconstruction which have failed, there can be substantial deviat...
Citations
Keywords • ABS (acrylonitrile butadiene styrene) • vibration • deposition direction • frequency response function • additive manufacturing Abstract This article compares the vibrational behaviour variability of acrylonitrile butadiene styrene (ABS) test specimens obtained by additive manufacturing (AM) with three different deposition directions. Test specimens are subjected to forced vibration on an electromechanical shaker, and the frequency response amplitude is measured using accelerometers. Natural frequency and Q-factors are discussed. The experiment shows that the direction of deposition generates a material damping variability of up to 30 %. The parameters identified during experiments could be further used to develop finite element numerical models to virtually validate 3D printed structures generated with the same process parameters as the test samples. Ključne reči • ABS (akrilonitril butadijen stiren) • vibracije • pravac depozicije • funkcija frekventnog odziva • aditivna proizvodnja Izvod U ovom radu je dato poređenje promenjivog ponašanja vibracija ispitnih epruveta od akrilonitril butadijen stirena (ABS), dobijenih aditivnom proizvodnjom (AM) u tri razli-čita pravca depozicije. Epruvete za ispitivanje su podvrgnute vibracijama na elektromehaničkom uređaju, zatim se meri amplituda frek-ventnog odziva primenom akcelerometara. Data je disku-sija o sopstvenim frekvencijama i Q-faktora. U eksperimentu se sa pravcem depozicije generiše pro-menljivo prigušenje u materijalu do 30 %. Parametri koji se određuju u eksperimentima se mogu dalje iskoristiti za razvoj numeričkih modela sa konačnim elementima kako bi se virtuelno ocenilo ponašanje 3D štampane konstrukcije generisane sa istim parametrima kao i ispitivane epruvete.
This study aimed to evaluate particle emission characteristics and to evaluate several control methods used to reduce particle emissions during three-dimensional (3D) printing. Experiments for particle characterization were conducted to measure particle number concentrations, emission rates, morphology, and chemical compositions under manufacturer-recommended and consistent-temperature conditions with seven different thermoplastic materials in an exposure chamber. Eight different combinations of the different control methods were tested, including an enclosure, an extruder suction fan, an enclosure ventilation fan, and several types of filter media. We classified the thermoplastic materials as high emitter (>10¹¹ #/min), medium emitters (10⁹ #/min −10¹¹ #/min), and low emitters (<10⁹ #/min) based on nanoparticle emissions. The nanoparticle emission rate was at least 1 order of magnitude higher for all seven filaments at the higher consistent extruder temperature than at the lower manufacturer-recommended temperature. Among the eight control methods tested, the enclosure with a high-efficiency particulate air (HEPA) filter had the highest removal effectiveness (99.95%) of nanoparticles. Our recommendations for reducing particle emissions include applying a low temperature, using low-emitting materials, and instituting control measures like using an enclosure around the printer in conjunction with an appropriate filter (e.g., HEPA filter) during 3D printing.
