Day 4 Progress Check Flashcards
Which NDI method uses temperature variations to detect flaws in composite materials?
Thermography
In the context of layup techniques, what is the bleedout technique?
A technique where excess resin is controlled by multiple plies
What is the primary purpose of a heat bonder in composite repairs?
To automatically control heating based on repair area temperature feedback
What is the main function of thermocouples in composite curing processes?
To measure temperatures accurately
What is the primary disadvantage of using the audible (coin tapping) inspection method?
It cannot detect delamination deep in the structure
What does single side vacuum bagging involve?
Taping the bag in place and creating suction through a vacuum port
In ultrasonic inspection, what is the main advantage of the pulse echo “C scan” technique?
It is better for picking up multiple defects
Which heat source is commonly used for on-aircraft heating methods?
Heat blankets
What tool is commonly used to impregnate dry fibers with resin for wet layup?
Squeegee and brush
What is the main disadvantage of using a heat lamp for curing composites?
It is ineffective for curing temperatures above 150°F
Which material is typically used for caul plates during the cure cycle?
Aluminum
Which of the following is the most widely used method to detect delamination in composite materials?
Visual inspection
What is the purpose of a bleeder ply in vacuum bagging?
To create a path for air and volatiles to escape
Which of the following is an advantage of using autoclaves for curing composite materials?
They allow for complex chemical reactions under controlled conditions
What is the primary reason for mixing epoxy resins thoroughly?
To ensure proper curing
