Analysis of Weld Line Influence on Strength of Nylon Parts

Raz, Karel; Zahalka, Martin; Chval, Zdenek; Kučerová, Ludmila

doi:10.21062/ujep/x.2017/a/1213-2489/mt/17/4/561

Cited by 6 publications

(2 citation statements)

References 9 publications

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“…The paper [11], which was created in our department, deals with the determination of basic material parameters of PA6+SCF [11], [12]. This material is manufactured by Markforged company for the Mark Two printers with the trade name ONYX [10].…”

Section: Fig 1 Geometry Of Basic Crash Elementsmentioning

confidence: 99%

Experimental testing of basic crash elements made of CFRP by additive technologies

Kalina¹,

Špirk²,

Sedlacek³

2020

Manufacturing Technology

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This paper deals with the experimental testing of the basic crash elements which are made of PA6 with short carbon fiber reinforcement by additive technology. Additive technologies allow the production of very complex, thin-walled and hollow shapes, which can be used to tune the desired characteristics of the deformation member. The variable size of the deceleration, the length of the deformed part and the total amount of energy absorbed can be controlled by suitable geometry. The initial impact peaks can be reduced by gradually changing the geometry. Experimental testing of the basic crash elements was performed on several specimens and average values are used in this paper. The maximal and the average deceleration and total energy absorbed are primarily monitored. The obtained data will be used for validation of material properties in Crash-Pam software. Usage of a validated material model, larger and more complex deformation members will be proposed, e.g. for the racing car Formula SAE.

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Section: Fig 1 Geometry Of Basic Crash Elementsmentioning

confidence: 99%

Experimental testing of basic crash elements made of CFRP by additive technologies

Kalina¹,

Špirk²,

Sedlacek³

2020

Manufacturing Technology

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“…A large number of plastic products means a considerable problem with its recycling and accumulation of plastic waste. Accumulation of packing waste has an impact on the environment (Bulatovic et al, 2019;Raz et al, 2017;Pacana et al, 2016;Urban, 2019;Benaissa and Benabdelhafid, 2010).…”

Section: Introductionmentioning

confidence: 99%

The changes of LD-PE films after exposure in different media

Kojnoková

Markovičová

Nový

2020

Production Engineering Archives

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This work deals with the study of polymers, and, in particular, polyethylene; its production, types, properties, and usage. The experimental part evaluates the changes of properties of the polyethylene film to be reused under various exposure conditions and selection of the most suitable medium for its application. The film made of low-density polyethylene (LD-PE) was influenced by aggressive media with different pH, specifically Savo for the disinfection, Savo as a Saponate for dish washing and Coca-Cola. On LD-PE films the water absorption and melting temperature evaluation tests were performed. Carried out tests show that the most aggressive medium for LD-PE film from used media is Coca-Cola. The most effective application of LD-PE film like wrapping on container transported is the Savo used as a Saponate for dish washing.

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Advantages of Additive Technologies Usage in Design of Cooling Channels

Raz¹

2019

Manufacturing Technology

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Main aim of this paper is to analyze the thermal behavior of different cooling channels and to describe advantages of manufacturing of a mold with these channels using a 3D printer instead of drilling machines. This work was primarily done by the usage of virtual simulation. Validation of thermal simulations was performed by usage of simple analytical solution. A simple model of molded brick was designed to analyze the cooling time and the temperature distribution in the mold when changing the cross section of the cooling channels. Three types of different rectangular cross-sections and one circular were chosen. All of them have the same area. The cooling channel with circular cross section was positioned closer to the part in next design and influence of this change was analyzed. Last tested configuration is conformal cooling channel with a channel path twice longer. It is obvious, that most suitable configuration of cooling channels is combination of conformal design with rectangular shape as close as possible to plastic part.

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Analysis of Weld Line Influence on Strength of Nylon Parts

Cited by 6 publications

References 9 publications

Experimental testing of basic crash elements made of CFRP by additive technologies

Experimental testing of basic crash elements made of CFRP by additive technologies

The changes of LD-PE films after exposure in different media

Advantages of Additive Technologies Usage in Design of Cooling Channels

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