Resumen de Quasi-static and dynamic analysis of single-layer sandwich structures of APM foam spheroid elements in-situ foamed with marble

J.M. Ruiz-Román, Alejandro Sánchez de la Muela, L. E. G. Cambronero, Íñigo Eloy Ruiz Bustinza

• español

  En el presente trabajo se estudia el comportamiento mecánico de las espumas de aluminio mediante la realización de pruebas estáticas y dinámicas de compresión. Una vez que se haya analizado su comportamiento, se debe poder decidir si este material es el adecuado para diferentes tipos de aplicaciones. Se comienza empleando piezas esferoidales de aleación de aluminio AlSi7, espumadas con mármol como agente de soplado, situadas entre dos placas de aluminio fijadas a las bolas con una mezcla formada por resina y un endurecedor. Por otro lado, se preparan otros paneles sándwiches con espumas de aluminio convencionales, adheridos con la misma mezcla a dos placas de aluminio. Estos dos tipos de mate­riales serán caracterizados mecánicamente.

• English

  In the present investigation, an experimental design of hybrid structures based on advanced pore morphology (APM) Al foam spheroid elements is studied. The energy absorption capacities of three configura­tions is assessed for both quasi-static and dynamic compressive loads. To this end experimental tests were per­formed by means of a universal testing machine using a 100 kN load cell (accuracy of 0.1%) and a drop weigh tower in a range of impactor masses varying from 2.2 to 23.12 Kg. The three types of samples explored are the following: foam spheroid elements, sandwich panel filled with a single-layer of APM and thin-wall Al hollow structure filled with free-bonded APM. The compressive testing assessment of hybrid structures based on APM Al foam spheroid elements showed excellent improvements on energy absorption capacity against to Al foam conventional structures. This capacity is led by both the bonding agent and friction effects. The foaming agent applied in this study, white marble, is presented as a functional and low-cost alternative to titanium hydride.