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Fatigue Strength

Machine Design

Previous Years Questions

Marks 1

A machine component made of a ductile material is subjected to a variable loading with $${\sigma _{\min }} = - 50MPa$$ ...
GATE ME 2017 Set 2
For the given fluctuating fatigue load, the values of stress amplitude and stress ratio are respectively. ...
GATE ME 2015 Set 3
Which one of the following is the most conservative fatigue failure criterion?
GATE ME 2015 Set 1
In a structure subjected to fatigue loading, the minimum and maximum stresses developed in a cycle are $$200$$$$MPa$$ an...
GATE ME 2014 Set 2
A rotating steel shaft is supported at the ends. It is subjected to a point load at the center. The maximum bending stre...
GATE ME 2014 Set 3
The $$S$$-$$N$$ curve for steel becomes asymptotic nearly at
GATE ME 2003
In terms of theoretical stress concentration factor $$\left( {{k_t}} \right)$$ and fatigue stress concentration factor ...
GATE ME 2003
A static load is mounted at the center of a shaft rotating at uniform angular velocity. This shaft will be designed for
GATE ME 2002
The yield strength of a steel shaft is twice its endurance limit. Which of the following torque fluctuations represent t...
GATE ME 1993
Fatigue strength of a rod subjected to cyclic axial force is less than that of a rotating beam of the same dimensions su...
GATE ME 1992
In a shaft with a transverse hole, as the hole to the shaft diameter ratio ___________ (increases / decreases), the tors...
GATE ME 1991
The process of shot peening increases the fatigue life of steel springs mainly because it results in
GATE ME 1990
Stress concentration in a machine component of a ductile material is not so harmful as it is in a brittle material becau...
GATE ME 1989

Marks 2

A machine element has an ultimate strength $$\left( {{\sigma _u}} \right)$$ of $$600\,\,N/m{m^2},$$ and endurance limit...
GATE ME 2017 Set 1
In a structural member under fatigue loading, the minimum and maximum stresses developed at the critical point are $$50$...
GATE ME 2016 Set 2
A bar is subjected to fluctuating tensile load from $$20$$ $$kN$$ to $$100$$ $$kN.$$ The material has yield strength of ...
GATE ME 2013
A forged steel link with uniform diameter of $$30mm$$ at the centre is subjected to an axial force that varies from $$40...
GATE ME 2009
A thin spherical pressure vessel of $$200mm$$ diameter and $$1mm$$ thickness is subjected to an internal pressure varyin...
GATE ME 2007
A cylindrical shafts is subjected to an alternating stress of $$100MPa.$$ Fatigue strength to sustain $$1000$$ cycles is...
GATE ME 2006
A ductile material having an endurance limit of $$196$$ $$N/m{m^2}$$ and the yield point at $$294$$ $$N/m{m^2}$$ is stre...
GATE ME 1987

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Class 12