Research on Vibration Test Scheme for Screw Anti-loosening Performance Detection

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Under vibration conditions, the main failure mode of threaded connections is loosening. This paper analyzes the mechanical properties and anti-loosening characteristics of a certain type of cross recessed pan head screw based on the needs of the enterprise and the loosening situation in practical applications, and studies the loosening law and influence of screws under different vibration conditions. More than 80 hours of vibration tests shows: (1) Under normal vibration conditions, the tightening torque attenuation of the screw is usually stable at 30%, and it should not be judged as failure at this time. (2) The vibration test of the whole machine of the enterprise has no effect on the loosening of the screws. (3) The influence of vibration displacement on screw loosening is more obvious than that of vibration frequency. (4) Compared with the steel internal thread, the aluminum internal thread has a large dispersion of the loosening of the screw, and is easy to wear during vibration.This paper provides a reference for the determination and detection of screw looseness and process improvement.

Original languageEnglish
Title of host publication2022 Global Reliability and Prognostics and Health Management Conference, PHM-Yantai 2022
EditorsWei Guo, Steven Li
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665496315
DOIs
StatePublished - 2022
Event2022 Global Reliability and Prognostics and Health Management Conference, PHM-Yantai 2022 - Yantai, China
Duration: 13 Oct 202216 Oct 2022

Publication series

Name2022 Global Reliability and Prognostics and Health Management Conference, PHM-Yantai 2022

Conference

Conference2022 Global Reliability and Prognostics and Health Management Conference, PHM-Yantai 2022
Country/TerritoryChina
CityYantai
Period13/10/2216/10/22

Keywords

  • accelerated vibration test
  • anti-loosening
  • screws
  • torque method

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