Ultrasonic nodal point, a new configuration for ultrasonic moulding technology
| Autor: | Toni López, Marcel Janer, Dolores Riera, Xavier Plantà |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Doctorat en Ciència i Enginyeria dels Materials, Universitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC, Universitat Politècnica de Catalunya. GREMS - Grup de Recerca en Mineria Sostenible |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Acoustics and Ultrasonics Polyoxymethylene Injection moulding Polymers Process (computing) Mechanical engineering Enginyeria dels materials::Materials plàstics i polímers [Àrees temàtiques de la UPC] 01 natural sciences Polímers chemistry.chemical_compound Nodal point Cardinal point chemistry 0103 physical sciences Ultrasonic sensor Polymer processing Ultrasonic moulding 010301 acoustics Thermoplastic polymer Energy (signal processing) High power ultrasound |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| DOI: | 10.1016/j.ultras.2021.106418 |
| Popis: | Ultrasonic moulding is a new technology that uses high power ultrasounds to melt and mould thermoplastic polymers to produce samples with mini and micro features. The main feature of this technology is the use of ultrasonic energy as the heating source instead of a conventional injection screw. Even if ultrasonic moulding overcomes some of the drawbacks of conventional mini and micro-injection moulding, it still presents two main limitations that are hindering its widespread applicability: the lack of stability of the process and the difficulty to obtain samples with good mechanical properties for some materials. This article presents a new configuration, called nodal point ultrasonic moulding (NPUSM), to surmount such limitations. This configuration improves the stability of ultrasonic moulding technology and it is capable of processing materials with good mechanical properties. To prove its efficacy, the nodal point ultrasonic moulding configuration is used to obtain the processing window of a polyoxymethylene material and these results are compared with standard ultrasonic injection and conventional injection moulding. The results obtained show that NPSUM configuration improves the capabilities of ultrasonic moulding technologies. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|