{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:06:58Z","timestamp":1760234818471,"version":"build-2065373602"},"reference-count":50,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2021,6,15]],"date-time":"2021-06-15T00:00:00Z","timestamp":1623715200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","award":["Projektnummer 57157498\u2013SFB 805"],"award-info":[{"award-number":["Projektnummer 57157498\u2013SFB 805"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this paper we present a novel, cost-effective camera-based multi-axis force\/torque sensor concept for integration into metallic load-bearing structures. A two-part pattern consisting of a directly incident and mirrored light beam is projected onto the imaging sensor surface. This allows the capturing of 3D displacements, occurring due to structure deformation under load in a single image. The displacement of defined features in size and position can be accurately analyzed and determined through digital image correlation (DIC). Validation on a prototype shows good accuracy of the measurement and a unique identification of all in- and out-of-plane displacement components under multiaxial load. Measurements show a maximum deviation related to the maximum measured values between 2.5% and 4.8% for uniaxial loads (Fx,\u00a0Fy,Fz,Mz) and between 2.5% and 10.43% for combined bending, torsion and axial load. In the course of the investigations, the measurement inaccuracy was partly attributed to the joint used between the sensor parts and the structure as well as to eccentric load.<\/jats:p>","DOI":"10.3390\/s21124104","type":"journal-article","created":{"date-parts":[[2021,6,15]],"date-time":"2021-06-15T21:24:29Z","timestamp":1623792269000},"page":"4104","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Sensor Integrated Load-Bearing Structures: Measuring Axis Extension with DIC-Based Transducers"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6213-2944","authenticated-orcid":false,"given":"Nassr","family":"Al-Baradoni","sequence":"first","affiliation":[{"name":"Institute for Production Engineering and Forming Machines, Technical University of Darmstadt, 64287 Darmstadt, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7927-9523","authenticated-orcid":false,"given":"Peter","family":"Groche","sequence":"additional","affiliation":[{"name":"Institute for Production Engineering and Forming Machines, Technical University of Darmstadt, 64287 Darmstadt, Germany"}]}],"member":"1968","published-online":{"date-parts":[[2021,6,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"3632","DOI":"10.1109\/JSEN.2018.2812820","article-title":"A Three-Dimensional Fiber Bragg Grating Force Sensor for Robot","volume":"18","author":"Xiong","year":"2018","journal-title":"IEEE Sens. 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