Deformation Mechanism in Mechanically Coupled Polymer–Metal Hybrid Joints

Bula, Karol; Sterzyński, Tomasz; Piasecka, Maria; Różański, Leszek

doi:10.3390/ma13112512

Cited by 15 publications

(12 citation statements)

References 30 publications

(33 reference statements)

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“…As it can be concluded from the description of the injection process issues, the most important parameter is the temperature of the forming surfaces. It was also confirmed by the studies [ 10 , 11 , 12 ]. Rapid Temperature Cycling (RTC) technology can be used to solve these problems.…”

Section: Introductionsupporting

confidence: 72%

Design and Simulation Study of the Induction Heated Injection Mold with Sliders

et al. 2021

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In order to increase the quality of the products manufactured by injection molding, RTC technology can be used to achieve higher mold temperatures. As a result, the path of the injected melt can be extended, allowing the production of parts with more complex shapes and greater length. Induction heating allows heating only selected forming surfaces of the mold which increases the speed and efficiency of the process. This paper presents the concept of a detachable inductor integrated with sliders to enable the application of this technology in an injection mold with sliders, along with the theoretical model used to perform the tests. First, the effect of the magnetic concentrator shape on the process was analyzed. This was followed by a simulation study of the influence of process parameters: heating time, frequency, and electric current. An extensive analysis of the test results of the temperature distribution on the insert allowed for the selection of parameter sets that would enable obtaining the desired surface temperature without a major increase in process time. The results of simulation studies confirm the possible applications and present the range of parameters for obtaining the optimal process.

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Section: Introductionsupporting

confidence: 72%

Design and Simulation Study of the Induction Heated Injection Mold with Sliders

et al. 2021

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“…Regarding the mechanical properties very promising results were achieved particularly by using rivet-like coupling in polymer-metal connections. In this kind of joints, the number of rivets and relative position of every single rivet, regarding the boundary between both materials, plays a significant role [17,18].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of metal-polymer riveted joints

Roszak¹,

Bula²,

Sagradov³

et al. 2022

Mater. Res. Express

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This paper presents the modeling and analysis of the joints of metal inserts with polyamide 6 using the injection technique. Based on the conducted experiments, modeling and numerical calculations of joints were carried out for various joint configurations. Metal parts, made of steel grade DC 04, are mechanically locked with polyamide 6 (PA6) with rivets. The mechanical connection with rivets of both elements was achieved by filling the holes in the metal parts in the injection process. As part of the work, mechanical-clamp connections made of steel / PA6 were mechanically tested in a single-axis joint tensile test using appropriate tabs. The main goal was to study and numerically analyze the number of rivets and their location on the metal plate for the strength of the connector. An important element of the work was the modeling process of both the PA6 material behavior and the joint itself. As part of the experimental research, the rivet deformation was also observed using computer thermography with the use of an IR camera. The tests and simulation showed that for the sample, the polymer-metal connected with less than three rivets was destroyed by shear. On the other hand, when the polymer-metal junction was made of three rivets, the jamming mechanism was mainly related to damage to the polymer part. For these joints, the maximum values of the breaking force of the joint were obtained in uniaxial tensile and shear tests where three rivets were used. Similar values were obtained during the numerical calculations performed with the use of Abaqus software.

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“…Of all the parameters, the key parameter is the temperature of the molding surfaces during the filling of the cavity by a flowing plastic melt, as many studies show [ 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Selective Induction Heating for Improvement of Mechanical Properties of Elastic Hinges

et al. 2021

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Injection molding is a polymer processing technology used for manufacturing parts with elastic hinges. Elastic hinges are widely used in FMCG (Fast Moving Consumer Goods) packaging (e.g., bottle closures of shampoos, sauces) and in the electrical engineering industry. Elastic hinge is a thin film that connect two regions of the injection molded part, where significant shear rates are present, which can lead to the degradation of polymers and the decrease in mechanical properties. Selective induction heating is the method that improves the flow of the polymer melt through thin regions by the local increase in mold temperature. In this study, selective induction heating was used to improve mechanical properties of elastic hinges by the reduction of material degradation due to high shear rates. To verify the change of shear rates, selective induction heating simulation and injection molding simulations were performed. The linear relation between mold temperature and maximum shear rate in the cross-section was identified and the mechanical tests showed significant differences in hinge stiffness, tensile strength and elongation at break.

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Deformation Mechanism in Mechanically Coupled Polymer–Metal Hybrid Joints

Cited by 15 publications

References 30 publications

Design and Simulation Study of the Induction Heated Injection Mold with Sliders

Design and Simulation Study of the Induction Heated Injection Mold with Sliders

Experimental and numerical investigation of metal-polymer riveted joints

Application of Selective Induction Heating for Improvement of Mechanical Properties of Elastic Hinges

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