Effect of the Impact Conditions on the Mechanical Properties of Injection-Molded Parts

This work focused on the study of the impact event on molded parts in the framework of automotive components. The influence of the impact conditions and processing parameters on the mechanical behavior of talc-filled polypropylene specimens was analyzed. The specimens were lateral-gate discs produced by injection molding, and the mechanical characterization was performed through instrumented falling weight impact tests concomitantly assisted with high-speed videography. Results analyzed using the analysis of variance (ANOVA) method have shown that from the considered parameters, only the dart diameter and test temperature have significant influence on the falling weight impact properties. Higher dart diameter leads to higher peak force and peak energy results. Conversely, higher levels of test temperatures lead to lower values of peak force and peak energy. By means of high-speed videography, a more brittle fracture was observed for experiments with higher levels of test velocity and dart diameter and lower levels of test temperature. The injection-molding process conditions assessed in this study have an influence on the impact response of moldings, mainly on the deformation capabilities of the moldings.

Há alternativas ao aumento de impostos? Sim, há.

“Procuradoria aconselha levar swaps a tribunal”. Referindo-se com maior especificidade: “A Procuradoria-Geral da República manteve contactos informais com o Ministério das Finanças para avaliar a possibilidade de o Estado levar a tribunal os contratos de alto risco assinados por empresas públicas de transporte. E deu indicações ao Governo de que há condições para conseguir a anulação dos swaps, se o Estado optar pela via litigiosa – o que ainda não aconteceu. Para isso, o Executivo tem de dar essa indicação ao Ministério Público”. Abstract: "Attorney advises swaps take the court." Referring with greater specificity: "The Attorney General's Office had informal contacts with the Ministry of Finance to evaluate the possibility of the state to prosecute high-risk contracts signed by public transport companies. And has directed the Government that there are conditions to achieve the cancellation of swaps if the state chooses the remedy litigation - which has not happened yet. For this, the Executive must provide that information to the prosecutor. "

Heróis Nacionais dos Contratos-swap no Minho!

A Procuradoria-Geral da República manteve contactos informais com o Ministério das Finanças para avaliar a possibilidade de o Estado levar a tribunal os contratos de alto risco assinados por empresas públicas de transporte. E deu indicações ao Governo de que há condições para conseguir a anulação dos swaps, se o Estado optar pela via litigiosa – o que ainda não aconteceu. Para isso, o Executivo tem de dar essa indicação ao Ministério Público” § The Attorney General's Office had informal contacts with the Ministry of Finance to evaluate the possibility of the state to prosecute high-risk contracts signed by public transport companies. And the Government has indicated that there are conditions to achieve the cancellation of swaps, if the state chooses the remedy litigation - which has not happened yet. For this, the Executive must provide that information to the prosecutor ";