How can you improve fatigue life of a steel EXCEPT? by removing stress concentra

Question

How can you improve fatigue life of a steel EXCEPT? by removing stress concentrators by imposing a tensile surface stress by carburizing the surface by applying the shot peening on the surface What is K_IC? fracture toughness that depends on specimen size toughness under plane stress condition critical value of stress intensity factor ductility parameter Hot working takes place at a temperature above a metal's: melting temperature recrystallization temperature eutectoid temperature glass transition temperature Which glass are the most resistant to thermal shock? soda lime glass borosilicate glass 96% silica glass fused silica The atoms surrounding a screw dislocation experience which kinds of strains: tensile strains shear strains compressive strains both (b) and (c) What is the newest member of the nanocarbon materials, which is made of a single-atomic-layer of graphite sheet that are extremely strong, yet flexible? diamond fullerene carbon black grapheme Shape memory alloys have the following characteristics EXCEPT: martensite transformation original shape can he restored when heated above A_f (austenite finish temperature) deformation must occur above M_s (martensite start temperature) deformation occurs by migration of twin boundaries

Explanation / Answer

Multiple choice

6.12. Fatigue life of steel can be impoved by all except,

(b)

6.13. Term Kic stands for,

(a)

6.14. Hot working takes place at a temperature above metal's,

(b)

6.15. The glass with maxium resistant to thermal shock,

(b)

6.16. The atoms surrounding the srew dislocations, experince strain of type,

(b)

6.17. Newest mamber of nanocarbon which are strogn yet flexible,

(d) graphere

6.18. Sharp memory alloys have all except,

(b)

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