Suppose that the fatigue data shown in the Animated Figure: S-N Plot for Steel is for a steel alloy that was tested using bending-rotating tests. A rod of this alloy is to be used for an automobile axle that rotates at an average rotational velocity of 1000 revolutions per minute. Give the maximum lifetimes of continuous driving that are allowable for the following stress levels: (a) 450 MPa i hours (b) 380 MPa i hours (c) 310 MPa hours

Suppose that the fatigue data shown in the Animated Figure: S-N Plot for Steel is for a steel alloy that was tested using bending-rotating tests. A rod of this alloy is to be used for an automobile axle that rotates at an average rotational velocity of 1000 revolutions per minute. Give the maximum lifetimes of continuous driving that are allowable for the following stress levels: (a) 450 MPa i hours (b) 380 MPa i hours (c) 310 MPa hours

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

|Cycles to failure = 1E 3
Stress = 250 MPa
500
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250
103
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Cycles to failure
Stress amplitude (MPa)

Suppose that the fatigue data shown in the Animated Figure: S-N Plot for Steel is for a steel alloy that was tested using
bending-rotating tests. A rod of this alloy is to be used for an automobile axle that rotates at an average rotational velocity of
1000 revolutions per minute. Give the maximum lifetimes of continuous driving that are allowable for the following stress
levels:
(a) 450 МPа
i
hours
(b) 380 MPа
i
hours
(c) 310 МPа
hours

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