Distinguish between creep and fatigue.

1 Answer

Answer :

Creep is low and progressive deformation of a material with time under a constant stress at high
temperature applications. Fatigue is the reduced tendency of material to offer resistance to applied
stress under repeated or fluctuating loading condition.

Related questions

Description : Distinguish Between Creep And Fatigue?

Last Answer : Creep is low and progressive deformation of a material with time under a constant stress at high-temperature applications. Fatigue is the reduced tendency of material to offer resistance to applied stress under repeated or fluctuating loading condition.

Description : Slow plastic deformation of metals under a constant stress is termed as __________ failure. (A) Fatigue (B) Endurance (C) Creep (D) None of these

Last Answer : (C) Creep

Description : Reduction in the grain size reduces the __________ of the material. (A) Fatigue resistance (B) Tensile strength (C) Creep resistance (D) All (A), (B) & (C)

Last Answer : (C) Creep resistance

Description : Deformation that occurs due to stress over a period of time is known as ____________ a) Wear resistance b) Fatigue c) Creep d) Fracture

Last Answer : c) Creep

Description : On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is (A) Creep (B) Toughness (C) Tensile strength (D) Fatigue

Last Answer : (B) Toughnes

Description : A material is capable of resisting softening at high temperature, because of its property termed as (A) Hot temper (B) Hot hardness (C) Fatigue (D) Creep

Last Answer : (B) Hot hardness

Description : Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen. (A) Creep (B) Fatigue (C) Endurance (D) Tensile

Last Answer : (B) Fatigue

Description : The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed as the (A) Fatigue strength (B) Creep strength (C) Resilience (D) Endurance limit

Last Answer : D) Endurance limit

Description : Reduction in the grain size reduces the __________ of the material. (A) Fatigue resistance (B) Tensile strength (C) Creep resistance (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Description : The highest stress that a material can withstand for a specified length of time without excessive deformation is called the __________ strength. (A) Creep (B) Endurance (C) Fatigue (D) None of these

Last Answer : Option A

Description : Tumbling is the process of improving the __________ of the materials/parts. (A) Surface finish (B) Fatigue limit (C) Creep limit (D) Surface cleanliness

Last Answer : Option D

Description : Write Short Notes On Creep And Slip In Belt Drive?

Last Answer :  The movement of belt upon the face of rim or outer surface of driver and driven pulleys within the area of arc of contact is called creep in belt drive.  If the belt is loosely fitted on pulleys, it slips down which is called slip in belt drive.

Description : While normal carburising and nitriding surface treatments increase fatigue strength, excessive treatment may decrease the fatigue strength. Why ?

Last Answer : .Normal carburising/nitriding treatments increase volume due to phase transformation at Surface and introduce residual compressive surface stress and thus increase the fatigue strength. By excessive treatment the ... develop in the regions of high tensile stress and lead to early fatigue failure.

Description : Why fatigue strength decreases as size of a part increases beyond around 10 mm?

Last Answer : Perfection of material conditions is possible at lower sizes and as size increases, it is not possible to attain uniform structure of the material.

Description : What are some innocuous things that creep you out?

Last Answer : Strangers walking up to me. .. sometimes I just want to be left alone.

Description : Ever met a man or woman that gave you the creep vibe and it turned out that had done something (molestation, sexual assault)

Last Answer : Wow. Yes and another time I’ll just go with my instincts.

Description : Do Praying Mantis' creep you out?

Last Answer : I have more of a fascination with them. They are good for the garden,

Description : Is Twitter Basically Made So Ordinary People Can Creep Celebrities?

Last Answer : nah, i get free stuff from it too.

Description : Why do people creep halfway through the intersection at stoplights?

Last Answer : Impatience.

Description : Invasive slumlord, almost no heat, CO (Carbon Monoxide), broken entrance locks, squatters, some creep coming and going as they please from the apt. unit, and illegal, hidden CCTV spy cams in apt. People of Reddit what would you do?

Last Answer : Move lol

Description : What is your favorite thing to do to creep people out?

Last Answer : Walk around the street with a glass of water. Subtle, yet oddly creepy.

Description : What is your favorite thing to do to creep people out?

Last Answer : Walk around the street with a glass of water. Subtle, yet oddly creepy.

Description : which of the following is not true regarding scope creep? -General Knowledge

Last Answer : A. It is when the cost of the project is more than expected

Description : What is Creep ?

Last Answer : Creep means walking on the chest.

Description : Types of vertebrate animals which creep and crawl are called – (1) mammalians (2) amphibians (3) mollusks (4) reptilians

Last Answer : (4) reptilians Explanation: The types of vertebrate animals which creep and crawl are called reptilians.

Description : The formation of oxide film on a metal due to atmospheric exposure reduces its (A) Toughness (B) Stiffness (C) Creep limit (D) All (A), (B) & (C)

Last Answer : (C) Creep limit

Description : Slow and progressive deformation of a material with time under constant stress is called (A) Creep (B) Erosion (C) Resilience (D) None of these

Last Answer : (A) Creep

Description : Lead alone is not used in storing equipment, because it (A) Is very costly (B) Corrodes easily (C) Is having low creep strength (D) None of these

Last Answer : (C) Is having low creep strength

Description : Ability of a material to absorb energy in deformation in the plastic range is characterised as its (A) Ductility (B) Toughness (C) Creep (D) Resilience

Last Answer : (B) Toughness

Description : Creep is not exhibited at low temperature by (A) Rubber (B) Acrylics (C) Lead (D) Plastics

Last Answer : (C) Lead

Description : Presence of manganese in alloy steel improves its (A) Corrosion resistance (B) Cutting ability (C) Abrasion resistance & toughness (D) Elasticity & creep resistance

Last Answer : (C) Abrasion resistance & toughness

Description : Fill in the blank. Crashing refers to when the task duration’s are __ along the  critical path to meet the project completion date. Select one: a. scope creep b. floated c. slack d. compressed e. expedited

Last Answer : d. compressed

Description : Fill in the blank. Risk represents the likelihood that an event will happen during  the life of the project that will negatively affect the ________________ of project goals. Select one: a. scope creep b. achievement c. float d. rough order of magnitude e. slack

Last Answer : b. achievement

Description : The most common reason for schedule and cost overruns that surface after the project  is underway is scope creep.

Last Answer : Ans: True

Description : The underlying cause of many missed project deadlines is scope creep.

Last Answer : Ans: True

Description : As 'Fly' is related to 'Parrot' in the same way 'Creep' is related to what? (A) Snake(B) Rabbit(C) Fish(D) Crocodile(E) Sparrow

Last Answer : (A) Word

Description : Scope creep is only a minor factor in projects running over schedule, and every effort  should be made to incorporate any changes into the present system if they would truly be  beneficial.

Last Answer : Ans: False

Description : In wind erosion floating of less than 0.1 mm soil particle is observed in — stage a. Saltation b. Surface creep c. Suspension d. None of these

Last Answer : c. Suspension

Description : __________ flow means the flow of incompressible fluid with no shear. (A) Potential (B) Streamline (C) Creep (D) Boundary layer

Last Answer : (A) Potential

Description : With decrease in the grain size of a material, its creep resistance (A) Increases (B) Decreases (C) Remain constant (D) Either (A) or (B); depends on the material

Last Answer : (C) Remain constant

Description : Pick out the wrong statement. (A) Lead can creep under its own weight at room temperature (B) The electrical conductivity of gold is considerably reduced by alloying additions due to ... metal (D) With increase in temperature, the electrical conductivity of intrinsic semi-conductor will increase

Last Answer : (C) Recrystallisation temperature decreases with decrease in strain in a cold worked metal

Description : Consideration of the creep is the most important in case of the (A) Blades of gas turbine (B) Piston of an I. C. engine (C) Flywheel of steam engine (D) Cycle chain

Last Answer : (A) Blades of gas turbine

Description : After pre-stressing process is completed, a loss of stress is due to (A) Shrinkage of concrete (B) Elastic shortening of concrete (C) Creep of concrete (D) All the above

Last Answer : Answer: Option D

Description : If C is creep coefficient, f is original pre-stress in concrete, m is modular ratio, E is Young's modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is: (A) (1 - C)mf - eE B) (C - 1)mf + eE (C) (C - 1)mf - eE (D) (1 - C)mf + eE

Last Answer : Answer: Option B

Description : Young's modulus of a material is the measure of its (A) Stiffness (B) Malleability (C) Creep resistance (D) Tensile strength

Last Answer : Option A

Description : Yield strength of a material is determined by the __________ test. (A) Creep (B) Tension (C) Compression (D) Endurance

Last Answer : Option B

Description : Which of the following losses of pre-stress occurs only in pre-tensioning and not in posttensioning? (A) Elastic shortening of concrete (B) Shrinkage of concrete (C) Creep of concrete (D) Loss due to friction

Last Answer : Answer: Option A

Description : The effect of creep on modular ratio is (A) To decrease it (B) To increase it (C) Either to decrease or to increase it (D) To keep it unchanged

Last Answer : Answer: Option B

Description : The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called (A) Segregation (B) Bleeding (C) Bulking (D) Creep

Last Answer : Answer: Option B