Adhesives
25 grams
If no technical data is present, how much resin is required for each square foot of
dry fabric?
REFRENCE: TM 1-1500-204-23-11, page 6-48, paragraph 6-17. c. (2).
1 OHM or less
How much resistance is required to verify continuity in an EMI repair.
REFERENCE: TM 1-1520-280-23&P, EMI Shielding / Lightning Strike Protection
(Copper Mesh), step 7.
20 inches Hg
What is the minimum permissible vacuum for composite repairs?
REFERENCE: TM 1-1500-280-23&P Vacuum Bag and Cure Procedure
The harmful effect of a material after a single or short-term exposure.
What is acute toxicity?
REFERENCE: TM 1-1500-204-23-11, page 2-2, paragraph 2-3. a. (1).
Bond line voids, laminate blistering, and skin to core disbond.
What are the three types of moisture damage?
REFERENCE: TM 1-1500-204-23-11, page 6-12, para. 6-6. b.
100:58.
What is the mix ratio for EA 956?
REFERENCE: TM 1-1500-204-23-11, page 6-49, Figure 6-29, Example 2.
Cleaned up damage of removed core NTE 3 inches diameter.
What is the maximum cleaned up diameter of removed core in Zone H?
REFERENCE: TM 1-1520-280-23&P AIRFRAME MAINTENANCE PROCEDURES
/MAINTENANCE PROCEDURES/AIRFRAME/STABILATOR/Stabilator Inspections,
Table 1. General Repair Criteria - Composite Stabilator Repair.
Opposite ends of the 4 ounce non-woven breather cloth
Where are vacuum pucks placed?
TM 1-1500-280-23&P Vacuum Bag and Bleeder Schedule
The area within 2 inches of the edge of any heat blanket which is unreliable for achieving and maintaining the proper cure temperature.
What is a cold zone?
REFERENCE: EM 0284, TM 1-1520-280-23&P AIRFRAME MAINTENANCE
PROCEDURES/MAINTENANCE PROCEDURES/AIRFRAME/AIRFRAME REPAIR
PROCEDURES/Outboard Stabilator Composite Structure Repair - Vacuum Bag and
OR 1-1500-204-23-11 CH6 par6-18c(2)
Cure Procedure CAUTION #1.
Creates eccentric load path caused by offset of the neutral axes of the part and the patch which can cause interlaminar failure of the part or the patch and premature failure of the adhesive.
What are the disadvantages of the external bond patch?
REFERENCE: TM 1-1500-204-23-11, page 6-28, paragraph 6-15. c. (1).
Using incorrect mix ratios will reduce the strength of adhesive and may result in loss of structural integrity.
Why is it important to properly mix 2-part adhesives?
REFERENCE: TM 1-1520-280-23&P, Airframe Maint Procedures/Maint Procedures
/Airframe/Airframe Repair Procedures/Outboard Stabilator Composite Structure
Up to Full Skin Depth Zone B, C, D - 6 inch diameter or less. NTE 0.015 inches deep
What is the repair limit for Partial Thickness damage, Deep Scratches, Gouges and Cracks?
TM 1-1500-280-23&P Stabilator Inspections Table 1
Steel Screen, 4oz Non-Woven Breather, Heat Blanket, 4oz Non-Woven Breather, Vacuum Bagging Film
What is the bleeder schedule for Liquid Removal?
REFERENCE: TM 1-1500-280-23&P Vacuum Bagging and Cure Procedures
A process in which dry woven cloth is impregnated with a liquid adhesive and then cured to form a laminate.
What is “Wet Lay-up”?
REFERENCE: TM 1-1500-204-23-11, Pg. 6-39, PARA 6-16, PDF 157.
A chemical reaction which bonds the molecules of two-part resins together.
What is cross-linking?
REFERENCE: TM 1-1500-204-23-11, page 4-12, paragraph 4-4. c.
Gel at room temperature for 1 hour followed by an elevated temperature cure at 150°F for 2-3 hours.
What is the cure cycle for 1652 using an elevated temperature cure?
REFERENCE: TM 1-1520-280-23&P AIRFRAME MAINTENANCE PROCEDURES
/MAINTENANCE PROCEDURES/AIRFRAME/AIRFRAME REPAIR PROCEDURES
/Outboard Stabilator Composite Structure Repair - Core Repair/CORE POTTING
PROCEDURE, Step 4.b.(2)(a) and Table 1
2 Plies oriented at ±45 IML*
How many repair plies are used to repair the far-side laminate and in which
direction are they oriented?
REFERENCE: TM 1-1520-280-23&P AIRFRAME MAINTENANCE PROCEDURES
/MAINTENANCE PROCEDURES/AIRFRAME/AIRFRAME REPAIR PROCEDURES
/Outboard Stabilator Composite Structure Repair - Composite Skin Repair/FARSIDE
LAMINATE REPAIRS, Table 2.
1 inch from the edge of the repair area
Where should thermocouples be placed?
REFERENCE: TM 1-1500-280-23&P Composite Skin Repair
Non-hole filling, large footprint, limited torque, limited or adjustable
clamping force.
What features should a composite fastener have?
REFERENCE: TM 1-1500-204-23-11, PG, PG 3-14, para 3-46, PDF 48.
A circle
What is the most practical cutout shape for damage removal?
REFERENCE: TM 1-1500-204-23-11, page 6-3, para. 6-4.
32 grams of Part A and 18 grams of Part B. 53
To mix a total of 50 grams of EA 956, how much of Part A and Part B is required?
REFERENCE: TM 1-1500-204-23-11, page 6-49, Figure 6-29, Example 2.
0.25 inch larger than the largest repair ply using scouring pad.
How will wire mesh material be removed when repairing near side laminate?
TM 1-1500-280-23&P Remove Paint and Electromagnetic Interference (EMI) Protection
5 days
What is the cure cycle for EA 9396 at room temperature?
TM 1-1500-280-23&P Vacuum Bag and Cure Procedures
R = V2 ÷ W, where V is voltage and W is watts.
What is the formula for calculating the resistance of a heat blanket?
REFERENCE: TM 1-1500-204-23-11, page 3-4, paragraph 3-3 h. (3).
Counterclockwise
The warp clock measures positive angles in what direction?
REFERENCE: TM 1-1500-204-23-11, PDF 114.