Mühendislik Ödevi Yardımı
Sahada çalışan ön saflardaki yapı mühendisleri için tasarlanan Mühendislik ödevi, tüm alanlardaki mühendislere çalışmalarında yardımcı olmayı umuyor.
Hesaplama sürecinin günlük işleyişinde hızlı bir şekilde veri üretebilmek için etkili olan çeşitli hesaplama yardımcılarını, hesaplama süreçlerini ve işletim yöntemlerini içerir. Kapsamlı hesaplama ve sorgulama fonksiyonlarıyla kullanıcılar, gerçek ihtiyaçlara göre ilgili operasyonel gereksinimleri arayabilir ve değerli mühendislik verileri üretebilir.
- 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
- 8. Compared to brittle fracture, ductile fracture: a) Occurs more rapidly at lower stress levels b) Occurs without yielding of the material c) Occurs after the material reaches its yield stress d) Has no visible deformation before failure 9. Why is ductile fracture considered better than brittle fracture? a) Because it occurs at lower stress levels b) Because it gives warnings before final failure c) Because it happens suddenly, preventing further damage d) Because it does not require yielding 10. What is the first step in the ductile fracture process? a) Formation of microvoids b) Crack propagation by shear deformation c) Necking d) Fracture 11. What occurs after the microvoids form during the ductile fracture process? a) Crack propagation by shear deformation b) Necking c) Coalescence of microvoids to form a crack d) Fracture 12. What is fatigue in engineering materials? a) Sudden failure due to high impact stress b) Gradual failure due to cyclic tensile stress c) Instant failure due to thermal expansion d) Deformation due to compressive loading 13. What happens to the microcrack during fatigue failure? a) It remains static b) It grows progressively through the material c) It heals over time d) It turns into necking 14. Which of the following is NOT a common source of cyclic stress? a) Vibrations in the system b) Stress cycling c) Thermal cycling d) Compressive stress at static load
- 1. How can temper embrittlement occur in alloy steels? a) By quenching the material rapidly b) By exposure to low temperatures c) By isothermal exposure in the range of 400^circ C to 600^circ C d) By applying a tensile load 2. Which test is used to determine temper embrittlement in alloy steels? a) Hardness test b) Notched bar impact test c) Tensile test d) Compression test 3. Does temper embrittlement affect the hardness and tensile properties of the material: a) Yes, it significantly reduces them b) Yes, it increases them c) No, it has no effect on them d) No, but it reduces the elongation 4. What is stress corrosion cracking (SCC)? a) The growth of cracks due to thermal expansion b) The growth of cracks due to tensile stress and a reactive environment c) The weakening of a material due to fatigue loading d) The erosion of material due to high-speed flow of fluids 5. Which factors influence the initiation and propagation of SCC? a) Material hardness and density b) Material type, types of loading, and environment c) Temperature and pressure only d) Surface roughness and coating thickness 6. How does material chemistry and microstructure affect SCC? a) They do not affect SCC b) They affect SCC due to alloy compositions and fabrication processes c) They affect SCC only during high-temperature exposure d) They only affect SCC if the material is not heat-treated 7. How do protective coatings help prevent SCC? a) It exhibits little or no plastic deformation before fracture b) It occurs suddenly without warning c) It shows substantial plastic deformation before fracture d) It occurs at very low stress levels
- Fina Exam of AER463 Student's Name: 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? b) Visual examination a) Description of the failure situation d) Chemical design analysis c) Testing for radiation damage 27. Metallographic sections are typically taken through which areas? b) Fracture surfaces and other locations a) Contaminated regions only d) Areas with the most corrosion c) Clean and polished surfaces 28. Which process is commonly abbreviated as SCC? b) Stress Corrosion Cracking a) Stress Concentration Cracking d) Stress Carbonation Cracking c) Stress Controlled Creep 29. How does absorbed hydrogen affect metals? a) It strengthens the grain structure. b) It increases the stress required for crack initiation. c) It lowers the stress required for cracks to initiate and propagate. d) It reduces thermal conductivity. 30. Where does hydrogen diffuse to in carbon steel alloys over time? b) The metal grain boundaries d) The outer oxide layer a) The metal surface c) The metal core Student ID: Fall 2024-2025 Time: 30 min
- Times 30 min 1. First Principle of Failure Analysis is: a) Polishing surface c) Macroscopic examination b) Observing without touching d) Microscopic examination 2. Which one is not a fallure analysis tool? a) Transmission electron microscopy b) Optical microscopy c) Inductively Coupled Plasma (ICP) analysis d) Scanning electron microscopy 3. Chromatic and spherical aberration in optical microscopy are known as: a) Resolution modifier b) Contrast maker c) Light scatterer d) Lens errors 4. 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 5. What type of failure can result from improper maintenance or repair? a) Cavitation b) Chemical attack c) Welding d) Stress corrosion 6. What causes disintegration at elevated temperatures? a) Sonic vibrations b) Thermal shock c) Attack by liquid metals or platings d) Severe vibration 7. Which option is the most common cause of failure in aircraft parts? a) Stress corrosion b) Fatigue c) High-temperature oxidation d) Overload 8. 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 9. 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