Enhancement of Fatigue Life of Thick-Walled Cylinders Through Thermal Autofrettage Combined with Shrink-Fit

  • S. M. KamalEmail author
  • Uday Shanker Dixit
Conference paper
Part of the Lecture Notes on Multidisciplinary Industrial Engineering book series (LNMUINEN)


Thick-walled cylindrical components are used in many industries, e.g. oil and chemical industries, artillery industries and nuclear power plants for withstanding high pressure or thermal gradient. Such components are subjected to autofrettage prior to their use in service, which increases their load carrying capacity as well as fatigue life. The fatigue life of the cylinder is important when the cylinder is subjected to a fluctuating or repeated pressure. Thermal autofrettage is a potential process capable of increasing the pressure carrying capacity as well as the thermal gradient capacity of thick-walled cylinders. This is achieved by employing a radial thermal gradient across the wall thickness of the cylinder. Due to the beneficial compressive residual stresses generated at and around the inner wall of the cylinder as a result of unloading of the thermal gradient, the thermally autofrettaged cylinder enhances the load carrying capacity as well as the fatigue life. Further enhancement in the fatigue life can be achieved by combining thermal autofrettage with shrink-fit. In this work, the fatigue life analysis of the thermally autofrettaged cylinder with shrink-fit is carried out. The analysis of thermal autofrettage is based on the assumptions of a generalized plane  strain condition and Tresca yield criterion.


Thermal autofrettage Thick-walled cylinder Shrink-fit Stress intensity factor Fatigue life Paris law 


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© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of Mechanical Engineering, School of EngineeringTezpur UniversityTezpurIndia
  2. 2.Department of Mechanical EngineeringIndian Institute of Technology GuwahatiGuwahatiIndia

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