Quiz Chapter 9

1. How can self heating be considered when testing composites?

• •testing with adjusted frequencies

• •using short specimens

• •cooling

• •testing in water

2. Which failure mechanism occurs primary when testing composites in the range of pulsating stresses compression?

• •fiber splintering

• •fiber buckling

• •fiber squishing

• •fiber breakage

3. Which failure mechanism occurs primary when testing composites in the range of pulsating stresses tension?

• •fiber splintering

• •fiber buckling

• •fiber squishing

• •fiber breakage

what is the main reason for residual stresses in hybride materials?

• •different polarity of the materials

• •different conductivity of the materials

• •different thermal expansion coefficients of the materials

• •different density of the materials

what are advantages of z-pinning?

• •increases Young’s Modulus

• •increases bonding stability

• •increases bending strength

• •increases surface area

why are fiber-metal-laminates used?

• •low cost

• •combination of beneficial properties

• •immune to environmental influences

• •high lightweight potential