{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:52:06Z","timestamp":1760143926487,"version":"build-2065373602"},"reference-count":18,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2024,3,8]],"date-time":"2024-03-08T00:00:00Z","timestamp":1709856000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The comfort and safety of a cyclist are directly influenced by the vibrational behavior of the handlebar. Hence, the objective of this article is to comparatively assess the vibrational characteristics of two bicycle handlebars: one made of steel and the other made of braided composite material. The transmissibility function represents the relationship between the excitation applied to both handlebars through their stems and the corresponding response in the handle area, which was experimentally obtained by applying a random vibrating signal (constant amplitude of 0.01 g2\/Hz) using a shaker. This signal was applied in a frequency range between 100 Hz and 1200 Hz, and the response was measured at one of the two cantilevered ends of the handlebar. Different sensors, including a laser vibrometer and a control accelerometer in the shaker, were utilized. The transmissibility, natural frequencies and damping functions were obtained. Subsequently, another experimental analysis was carried out with the instrumented handlebars mounted on a bicycle, placing three accelerometers and a GPS meter and traveling through a real test circuit, with a rough surface, speed bumps and areas with shaped warning bands. Power Spectral Density (PSD) curves were obtained for the steel and carbon-fiber-composite handlebars in order to quantify the signal intensity. Finally, a fatigue analysis was carried out in order to evaluate the expected life of both handlebars under the experimentally applied load, which is considered the reference cycle. This study offers a comparative analysis of the vibration behavior exhibited by steel and carbon-fiber-composite bicycle handlebars under experimentally applied load. In conclusion, data on natural frequencies, damping functions and fatigue life expectancy for both handlebar materials were obtained. Our study provides valuable insights into the vibrational behavior and performance characteristics of steel and carbon-fiber-composite bicycle handlebars, contributing to the understanding of their comfort and safety implications for cyclists.<\/jats:p>","DOI":"10.3390\/s24061767","type":"journal-article","created":{"date-parts":[[2024,3,8]],"date-time":"2024-03-08T11:47:30Z","timestamp":1709898450000},"page":"1767","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Comparative Study of Vibration Response in Steel and Braided-Carbon-Fiber Bicycle Handlebars: A Numerical-Experimental Approach with Various Sensors"],"prefix":"10.3390","volume":"24","author":[{"given":"Javier","family":"Abad","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, University of Zaragoza, C\/Mar\u00eda de Luna s\/n, 50018 Zaragoza, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9007-1560","authenticated-orcid":false,"given":"Luis","family":"Castejon","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, University of Zaragoza, C\/Mar\u00eda de Luna s\/n, 50018 Zaragoza, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6100-7412","authenticated-orcid":false,"given":"Jesus","family":"Cuartero","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, University of Zaragoza, C\/Mar\u00eda de Luna s\/n, 50018 Zaragoza, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roberto","family":"Palacin","sequence":"additional","affiliation":[{"name":"School of Engineering, Newcastle University, Room 4.17, Stephenson Building, Newcastle upon Tyne NE1 7RU, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,3,8]]},"reference":[{"key":"ref_1","first-page":"145","article-title":"Design and Analysis of Carbon\/epoxy Composite Bicycle Handlebar","volume":"51","author":"Bere","year":"2014","journal-title":"Mater. Plast."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"79","DOI":"10.1007\/s12283-014-0168-9","article-title":"The relative contribution of road bicycle components on vibration induced to the cyclist","volume":"18","author":"Champoux","year":"2015","journal-title":"Sports Eng."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"555","DOI":"10.1016\/j.compositesb.2019.02.016","article-title":"The fatigue of carbon fibre reinforced plastics\u2014A review","volume":"166","author":"Alam","year":"2019","journal-title":"Compos. Part B Eng."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"095002","DOI":"10.1088\/0957-0233\/24\/9\/095002","article-title":"Sensor design for outdoor racing bicycle field testing for human vibration comfort evaluation","volume":"24","author":"Vanwalleghem","year":"2013","journal-title":"Meas. Sci. Technol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"219","DOI":"10.1016\/j.proeng.2015.07.203","article-title":"Dynamic calibration of a strain gauge based handlebar force sensor for cycling purposes","volume":"112","author":"Vanwalleghem","year":"2015","journal-title":"Procedia Eng."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"2266","DOI":"10.1177\/0954406220904101","article-title":"Design improvement and fatigue analysis for a bicycle handlebar stem system using uniform design method and genetic algorithm","volume":"234","author":"Jiang","year":"2020","journal-title":"Proc. Inst. Mech. Eng. Part C J. Mech. Eng. Sci."},{"key":"ref_7","unstructured":"(2023). Cycles-Safety requirements for bicycles\u2014Part 2: Requirements for city and trekking, young adult, mountain and racing bicycles (ISO 4210-2:2023) (Standard No. ISO 4210-2:2023)."},{"key":"ref_8","unstructured":"(2024, March 07). Available online: https:\/\/www.decathlon.es\/es\/p\/manillar-bicicleta-trekking-diametro-25-4-mm-longitud-640-mm-acero-negro\/_\/R-p-339493?mc=8739576."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"235","DOI":"10.1016\/0024-3795(80)90167-6","article-title":"Accuracy and effectiveness of the Lanczos algorithm for the symmetric eigenproblem","volume":"34","author":"Paige","year":"1980","journal-title":"Linear Algebra Its Appl."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1671","DOI":"10.1002\/eqe.1010","article-title":"Evaluation of the half-power bandwidth method to estimate damping in systems without real modes","volume":"39","author":"Olmos","year":"2010","journal-title":"Earthq. Eng. Struct. Dyn."},{"key":"ref_11","unstructured":"(2001). Mechanical vibration\u2014Measurement and evaluation of human exposure to hand-transmitted vibration\u2014Part 1: General requirements (Standard No. ISO 5349-1:2001)."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"392","DOI":"10.1002\/mawe.201700193","article-title":"Deriving fatigue equivalent power spectral density spectra for the vibration testing of engine components","volume":"49","author":"Decker","year":"2018","journal-title":"Mater. und Werkst."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"287","DOI":"10.1016\/0142-1123(94)90343-3","article-title":"Standardization of the rainflow counting method for fatigue analysis","volume":"16","author":"Amzallag","year":"1994","journal-title":"Int. J. Fatigue"},{"key":"ref_14","unstructured":"Rao, S.S. (1993). Mechanical Vibrations, Addison-Wesley."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Schijve, S. (2008). Fatigue of Structures and Materials, Springer. [2nd ed.].","DOI":"10.1007\/978-1-4020-6808-9"},{"key":"ref_16","unstructured":"Malvern, L. (1969). Introduction to the Mechanics of a Continuous Medium, Prentice Hall."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"104268","DOI":"10.1016\/j.engfailanal.2019.104268","article-title":"Development of a fatigue life prediction methodology for welded steel semi-trailer components based on a new criterion","volume":"108","author":"Tello","year":"2020","journal-title":"Eng. Fail. Anal."},{"key":"ref_18","unstructured":"Carvelli, V., Pazmino, J., Lomov, S.V., Bogdanovich, A.E., Mungalov, D.D., and Verpoest, I. (2015, January 15\u201318). Fatigue Behavior of a 3D Braided Carbon\/Epoxy Composite. Proceedings of the 18th International Conference on Composite Materials, Lisbon, Portugal."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/24\/6\/1767\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T14:11:12Z","timestamp":1760105472000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/24\/6\/1767"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,3,8]]},"references-count":18,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2024,3]]}},"alternative-id":["s24061767"],"URL":"https:\/\/doi.org\/10.3390\/s24061767","relation":{},"ISSN":["1424-8220"],"issn-type":[{"type":"electronic","value":"1424-8220"}],"subject":[],"published":{"date-parts":[[2024,3,8]]}}}