WA2_COMPOSITE SANDWICH CORE FABRICATION

Types of honeycomb cell configurations.

I. OXE core

II. Flexiable core

III. Hexagonal core

IV. Over expanded core

• I, II and III

• II, III and IV

• I, II, III and IV

Types of core as below, EXCEPT?

• 
• 
• 

Personal Protective Equipment (PPE) that used when conduct core chamfering.

I. Gloves

II. Respiratory

III. Safety shoes

IV. Cloth protection

• I, II and III

• II, III and IV

• I, II, III and IV

Select types of additives used for sandwich core fabrication.

I. Resin

II. Activator

III. Catalyst

IV. Promoter

• I, II and III

• II, III and IV

Which statement is TRUE about honeycomb cell configurations?

I. Honeycomb core cells for aerospace applications are usually octagonal.

II. Honeycomb core is available with different cell sizes.

III. Small sizes provide better support for sandwich face sheets.

IV. Higher density honeycomb core is stronger and stiffer than lower density core.

• I, II and III

• II, III and IV

What is sandwich structure?

• Bonded between facesheet and high density core.

• Consists of high strength facings or skins, being adhesively bonded to the low density core.

• Combination of metal core and fibre skins.

How long is core exposed to the environment that need to re-drying process?

• Less than 20 minutes

• More than 20 minutes

• More than 30 minutes

Which statement is FALSE about honeycomb core advantages?

• Increase the thickness in the composite panel

• Reduce weight in the composite panel

• Honeycomb is lightweight and hard material

Methyl ethyl ketone peroxide (MEKP) is an organic peroxide, a high explosive similar to acetone peroxide is not catalyst.

• TRUE

• FALSE

Styrofoam can be used for thermal insulation and craft applications.

• TRUE

• FALSE