BOHR Journal of Material Sciences and Engineering https://journals.bohrpub.com/index.php/bjmse <p><strong>ISSN: 2584-1467 (Online)</strong></p> <p><strong>BOHR Journal of Material Sciences and Engineering (BJMSE)</strong> is an open access peer-reviewed journal that publishes articles which contribute new results in all the areas of Material Sciences and Engineering. Authors are solicited to contribute to the journal by submitting articles that illustrate research results, projects, surveying works and industrial experiences that describe significant advances in this area.</p> en-US BOHR Journal of Material Sciences and Engineering <p>Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a <a href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a> that allows others to share the work with an acknowledgment of the work’s authorship and initial publication in this journal.</p> Failure analysis of SMS-1 EOT crane hoist C-hook https://journals.bohrpub.com/index.php/bjmse/article/view/1009 <p>A 40-ton capacity electric overhead traveling (EOT) crane hook failure was investigated for the root cause analysis. The analysis involves examination of drawing, visual inspection, chemical composition, microstructure, hardness, inclusion analysis, and fractography. From the drawing it was found that the hook failed at a thread groove where the stress concentration is maximum. The hook is a plain carbon steel grade. Visual inspection revealed fatigue striations on both sides on the diameter of the hook shaft, with the final fracture at the center. The chemical composition of the hook revealed lower carbon than the specification with lower hardness. The microstructure of the hook revealed a ferrite pearlite microstructure with no heat treatment, as there is no variation of microstructure from the surface to the core. A lot of large-sized manganese sulfide and silicate inclusions are found on the hook, revealing the steel is not a clean one. The fractography of the hook revealed fatigue striations with the final fracture in a rapid brittle mode with the cleavages seen through the scanning electron microscopy. Hence, it is suggested to use an alloy steel cleaned shaft with proper normalizing or Q&amp;T heat treatment for a better life. Additionally, use of ultrasonic non-destructive testing (NDT) for the detection of cracks by periodic monitoring will help in preventing the accidental failures.</p> J.N. Mohapatra Sujata Panda G. Praveen Kumar D. Satish Kumar Copyright (c) 2026 J.N. Mohapatra, Sujata Panda, G. Praveen Kumar, D. Satish Kumar https://creativecommons.org/licenses/by/4.0 2026-01-12 2026-01-12 3 1 1 10 10.54646/bjmse.2025.11