{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T18:58:02Z","timestamp":1777402682443,"version":"3.51.4"},"reference-count":23,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2025,1,20]],"date-time":"2025-01-20T00:00:00Z","timestamp":1737331200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Bolted joints, prevalent in industrial applications for component fastening, are susceptible to self-loosening\u2014a critical issue resulting in a gradual reduction in clamping force. Gaining insight into the underlying mechanisms of self-loosening is crucial. While prior research has largely focused on evaluating component stiffness, limited attention has been given to its impact on the self-loosening behavior of bolted joints under transverse cyclic loading. This study investigates how component stiffness influences self-loosening in bolted joints by varying the material and thickness of clamped members. An experimental setup replicating real-world conditions is devised to simulate loosening caused by cyclic lateral displacement. Tests are conducted using steel and high-density polyethylene (HDPE) clamped members of different grip lengths to explore the relationship between stiffness and self-loosening. Key parameters measured include bolt axial load, transverse force on clamped members, relative displacement, and rotation between the bolt and nut. The findings provide valuable insights into the effects of stiffness across various clamped member materials and grip length combinations, which can enhance the understanding of conditions that promote loosening resistance. Moreover, by highlighting stage-II or rotational loosening, with each test resulting in complete preload loss, the study provides a comparative analysis of the influencing factors. This enables the identification of distinct loosening patterns and supports the development of improved bolted joint designs to reduce loosening.<\/jats:p>","DOI":"10.3390\/ma18020462","type":"journal-article","created":{"date-parts":[[2025,1,20]],"date-time":"2025-01-20T10:32:15Z","timestamp":1737369135000},"page":"462","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Effect of Clamped Member Material and Thickness on Bolt Self-Loosening Under Transverse Loads"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9740-8456","authenticated-orcid":false,"given":"Rashique Iftekhar","family":"Rousseau","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, \u00c9cole de Technologie Sup\u00e9rieure, 1100 Notre-Dame Ouest, Montreal, QC H3C 1K3, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4817-0709","authenticated-orcid":false,"given":"Abdel-Hakim","family":"Bouzid","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, \u00c9cole de Technologie Sup\u00e9rieure, 1100 Notre-Dame Ouest, Montreal, QC H3C 1K3, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,1,20]]},"reference":[{"key":"ref_1","unstructured":"Bickford, J.H. 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Anal."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"586","DOI":"10.1115\/1.2717227","article-title":"Study of the effect of hole clearance and thread fit on the self-loosening of threaded fasteners","volume":"129","author":"Nassar","year":"2007","journal-title":"J. Mech. Des."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Zaki, A.M., Nassar, S.A., and Yang, X. (2010, January 18\u201322). Vibration Loosening Model for Preloaded Countersunk-Head Bolts. Proceedings of the ASME Pressure Vessels and Piping Conference, New York, NY, USA. Paper No. PVP2010-25069.","DOI":"10.1115\/PVP2010-25069"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"021210","DOI":"10.1115\/1.4005058","article-title":"Effect of conical angle and thread pitch on the self-loosening performance of preloaded countersunk-head bolts","volume":"134","author":"Zaki","year":"2012","journal-title":"J. Press. 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CSME"}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/18\/2\/462\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,8]],"date-time":"2025-10-08T10:32:13Z","timestamp":1759919533000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/18\/2\/462"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,1,20]]},"references-count":23,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2025,1]]}},"alternative-id":["ma18020462"],"URL":"https:\/\/doi.org\/10.3390\/ma18020462","relation":{},"ISSN":["1996-1944"],"issn-type":[{"value":"1996-1944","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,1,20]]}}}