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The absence of residual stresses on the chemically machined surfaces can produce __________ strength.

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The absence of residual stresses on the chemically machined surfaces can produce __________ strength.

(a) Favorable fatigue

(b) Unfavorable fatigue

(c) Constructive fatigue

(d) None of the mentioned

The question was posed to me by my college director while I was bunking the class.

This interesting question is from CHM-Limitations topic in division Chemical Processes of Advanced Machining

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The correct option is (b) Unfavorable fatigue

Easy explanation: Absence of residual stresses produce unfavorable fatigue strength, unlike to the processes that induce compressive residual stresses.

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