Answer is option a) Stress.
Stress corrosion is caused by crack tips.
Ductile material subjected to a tensile stress, sudden unexpected failure occur due to the growth of crack formation in a corrosive environment.
Which corrosion is caused by crack tips a. Stress b. Cavitation c. Pitting d. Uniform
6) Plastic deformation in a ductile machine ch question 10 points element causing separation into multiple pieces a. Ductile rupture b. Buckling c. Brittle fracture d. Fatigue 1) Plastic deformation amplified by high temperature operation over time a. Fretting b. Cavitation corrosion c. Creep d. Thermal shock stress e. Surface erosion Plastic deformation in a ductile machine element causing separation due to crack propagation a. Ductile rupture b. Fatigue c. Fretting d. Spalling 7) Static normal loads between two curved...
2. A long specimen is experiencing a normal stress at the ends. a) b) c) d) Find out the safety factor for fracture, if KIc-24 MPa mo5 Find out the safety factor for yielding, if 0200 MPa. Point A is 2 mm from the crack tip O. Determine σχ, Ơy,G, and τ, at point A (v:0.2). Determine whether Point A is in the plastic zone ahead of the crack tip Normal stress 40 MPa 10 mm 50 mm
2. A...
What is a sign of overhydration? a. Tenting, b. Dry tongue, c. pitting edema, d. decreased blood pressure Who is more likely to get MRSA? a. Someone who works in a factory b. An active IV drug user c. an active smoker who smokes a pack per day d. active marathon runner
3. Write the electrochemical half-cell reactions for oxidation and reduction during uniform corrosion in the following: (Also indicate if corrosion is possible) a. Corrosion of Aluminum in air free sulfuric acid (i.e., No oxygen in the solution) b. Iron in air free acid ferric sulfate solution (assume no O2 in the solution) Hint Fe3+ to Fe reaction is possible due to the presence of the ferric ions c. Carbon steel in aerated seawater (With O2 in the solution) d. Zinc...
4. Consider 4 materials A, B, C, D that all have edge cracks of width a = plane-strain fracture toughness (i.e, Kic) of A, B, C and D are, respectively, 1 MPa mo5 5 MPa m0.5, 10 MPa mo5, and 20 MPa mo.5. If each of these materials A, B, C and D, is subjected to fatigue loading where the stresses vary from a minimum of 0 MPa to a maximum of 100 MPa, and the crack sizes increase due...
5 a)
b)
c)
d)
The size of an internal crack that can be tolerated in alloy steel 4340 tempered at 425C for a stress of 100 MPa is (use any needed data from Chapter 8): 487 mm 80.5 mm O 246 mm 40.25 mm 161 mm 287 mm 492 mm 368 mm 122 mm 413 mm The fatigue strength after 100 million cycles in 2014-T6 aluminum alloy is (see the figure shown below): 700 600 Ti-5Al-2.5Sn titanium alloy 4340...
Which stress comes when there is an eccentric load applied? a) Shear stress b) Bending stress c) Tensile stress d) compressive stress e) Both c and d
For a body undergoing plane strain conditions, which of the following is true? The out-of-plane normal stress is zero a. b. The in-plane strain is zero c. The in-plane stress is zero d. The out-of-plane stress is zero e. The out-of-plane shear stress is zero
For a body undergoing plane strain conditions, which of the following is true? The out-of-plane normal stress is zero a. b. The in-plane strain is zero c. The in-plane stress is zero d. The out-of-plane...
JUTTU TUJUH TEUIL. TIPS CULUI Luuy lurperature a. all of QUESTION 4 Which type of muscle is found in the digestive tract? a. voluntary b. smooth C. cardiac d. skeletal QUESTION 5 A calorie is the measurement of a. the weight of food b. the volume of food c. the energy value of food d. the temperature of food QUESTION 6 A group of similar looking cells with a common function is called a tissue. True False QUESTION 7 Malnutrition...
7. Which of the following disease is caused by a virus a) Herpes b) AIDS c) Gonorrhea d) Chlamydia (e) Both a and b 8. All the following are true about cystitis, except a. a bladder infection b. It is common among otherwise healthy women c. It is caused in 80-90 % cases by Serratia species d. It is common nosocomial infection 9. Which of the following is true about HIV? a. The virus can attack a variety of cells,...