INFLUENCE OF DEFECTS ON FATIGUE LIFE OF HELICAL COIL SPRING

Authors

  • Harshal Anant Patil Department of Mechanical Engineering / Indira College of Engineering and management, Pune, India
  • Puspendra Upadhyay Department of Mechanical Engineering / Indira College of Engineering and management, Pune, India

Keywords:

Major imperfections in coil manufacturing

Abstract

A mechanical spring is defined as an elastic body whose primary function is to deflect or distort under load and which recovers its original shape when released after being distorted. Due to frequent failure of helical coil springs in various applications, analysis of fatigue life of the spring is required. In this study, Optical microscopy is performed to reveal the basic microstructure of the fractured surface and possible inclusions are also distinguished. Scanning electron microscopy (SEM) is used to characterize fine microstructure of the fractured surface and to reveal flaws that serve as crack initiation points. SEM images were taken of the defected spring and then sizes of defects were calculated from the images. These defects will be implemented in the cad model of helical coil spring and then fatigue analysis will be done to determine effect on fatigue life because of defects in helical coil springs.

Downloads

Published

2021-03-27

Issue

2019: IME

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0 DEED).

You are free to:

  1. Share — copy and redistribute the material in any medium or format
  2. The licensor cannot revoke these freedoms as long as you follow the license terms.

Under the following terms:

  1. Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  2. NonCommercial — You may not use the material for commercial purposes .
  3. NoDerivatives — If you remix, transform, or build upon the material, you may not distribute the modified material.
  4. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Notices:

You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation .

No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.

 

Rights of Authors

Authors retain the following rights:
1. Copyright and other proprietary rights relating to the article, such as patent rights,
2. the right to use the substance of the article in future works, including lectures and books,
3. the right to reproduce the article for own purposes, provided the copies are not offered for sale,
4. the right to self-archive the article.