Sheet Metal and Non-Metallic Structures

Question 1

What is bonded honeycomb (sandwich) construction?

Answer 1

a combination of alternating dissimilar materials
(a laminar construction with honeycomb in the middle)

Question 2

What materials are used in honeycomb construction?

Answer 2

Stainless steel, titanium, magnesium, plywood, resin impregnated paper, E-glass, nylon

Question 3

What factors are used to determine setback?

Answer 3

Setback = Radius and thickness

Question 4

What are several methods used in forming sheet material?

Answer 4

Folding, bumping, crimping, shrinking and stretching

Question 5

What kind of metal forming is done by forming?

Answer 5

Compound curves

Question 6

Briefly describe the anodizing process

Answer 6

Aluminium alloys placed in a electrolyte bath which causes a thin film of hydroxide to form on the surface on the aluminum

Question 7

What causes honeycomb structure to delaminate?

Answer 7

Moisture

Question 8

What are the acceptable repair methods for bonded honeycomb structure that has been damaged?

Answer 8

potted compound method
laminated fabric overlay

Question 9

What size drill should be used for the common shank rivet diameters 3/32, 4/32 and 5/32?

Answer 9

3/32 No. 40
4/32 No. 30
5/32 No. 21

Question 10

What is a warp line?

Answer 10

Highlighted strand in fabric showing orientation