Advanced Placement (AP) College

¿Cuál de los enunciados no pertenecen a la
fabricación de cascos de seguridad?
A)
Fibras de vidrio impregnadas de resinas
B)
Fibras de vidrio impregnadas de plástico
C)
Materiales plásticos de alta resistencia al
paso de la corriente eléctrica
(policarbonatos poliamidas)
D)
Plásticos laminados moldeados bajo altas
presiones
E)
aleación de aluminio

Answers

Answer 1
D have a good day!!!!!!!
Answer 2

La aleación de aluminio no forma parte de la fabricación de cascos de seguridad. (Opción correcta: E)

En esta pregunta debemos determinar que materiales son apropiados para la producción masiva de cascos de seguridad para luego determinar la opción inapropiada. El material de casco de seguridad debe cumplir las siguientes características:

DuctilidadMaleabilidadFabricabilidadElevada resistenciaResilienciaElevada razón de resistencia a pesoPoca conductividad térmicaPoca conductividad eléctrica

Esto se cumple con materiales poliméricos o materiales compuestos de sustrato cerámico y refuerzo polimérico de tipo termoplástico. Estos materiales tienen la ventaja frente al aluminio de tener menor peso, mayor resistencia mecánica y mayores razones de resistencia a peso. Pese a tener mayores costes de manufactura, tienen similar fabricabilidad y satisfacen los requisitos de seguridad.

Otro factor crucial es el hecho de que el aluminio es un conductor térmico y eléctrico, mientras los materiales poliméricos y compuestos de sustrato cerámico y refuerzo polimérico no lo son.

En consecuencia, la aleación de aluminio no forma parte de la fabricación de cascos de seguridad. (Opción correcta: E)

Para aprender más sobre materiales, invitamos cordialmente a ver esta pregunta verificada: https://brainly.com/question/9390600

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