22. Which conditions are typically represented in a phase diagram? a) Pressure, volume, and atomic weight b) Temperature and time c) Temperature, pressure, or chemical composition d) Pressure and volume 23. What type of failure can result from improper maintenance or repair? a) Cavitation b) Chemical attack c) Welding d) Stress corrosion 24. What causes disintegration at elevated temperatures? a) Sonic vibrations b) Thermal shock c) Attack by liquid metals or platings d) Severe vibration 25. Which option is the most common cause of failure in aircraft parts? a) Stress corrosion b) Fatigue c) High-temperature oxidation d) Overload 26. Which of the following is NOT explicitly mentioned as a step in failure analysis? a) Description of the failure situation b) Visual examination c) Testing for radiation damage d) Chemical design analysis 27. Metallographic sections are typically taken through which areas? a) Contaminated regions only b) Fracture surfaces and other locations c) Clean and polished surfaces d) Areas with the most corrosion 28. Which process is commonly abbreviated as SCC? a) Stress Concentration Cracking b) Stress Corrosion Cracking c) Stress Controlled Creep d) Stress Carbonation Cracking