eprintid: 14910 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/01/49/10 datestamp: 2023-11-10 03:29:30 lastmod: 2023-11-10 03:29:30 status_changed: 2023-11-10 01:58:08 type: article metadata_visibility: show creators_name: Isah, B.W. creators_name: Mohamad, H. creators_name: Ahmad, N.R. title: Rock stiffness measurements fibre Bragg grating sensor (FBGs) and the effect of cyanoacrylate and epoxy resin as adhesive materials ispublished: pub keywords: Adhesives; Cements; Elastic moduli; Epoxy resins; Lime; Rocks; Stiffness; Strain, Adhesive materials; Adhesive thickness; Cementitious materials; Elastic parameters; Fibre Bragg grating sensors; Finite element modelling; Stiffness measurements; Stiffness properties, Fiber Bragg gratings note: cited By 10 abstract: This study investigates the influence of adhesive type and its thickness performance when a highly sensitive Fibre Bragg grating (FBG) sensor is used to determine the stiffness properties of rock and cementitious material. Laboratory uniaxial tests were conducted on limestone and cement-paste specimens, equipped with strain gauges and FBGs attached locally using cyanoacrylate and epoxy-based adhesives. Differences were observed in the FBGs measured strains and the calculated elastic parameters between sensors attached with cyanoacrylate and epoxy-based on the same material (rock and cement). Smaller changes in strain are observed when FBG is attached with cyanoacrylate. Finite Element modelling indicated a reduction in peak strain and increase in Young's modulus from FBG compared to the rock when the adhesive thickness is increased. Also, the strain and stiffness determined vary with the adhesive type. Cyanoacrylate adhesive is relatively more suitable as it gives FBG strain values closer to that of the rock as opposed to Epoxy. © 2020 THE AUTHORS date: 2021 publisher: Ain Shams University official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096161543&doi=10.1016%2fj.asej.2020.09.007&partnerID=40&md5=4551c7884e5e3ba61e42d4fbfb5470f0 id_number: 10.1016/j.asej.2020.09.007 full_text_status: none publication: Ain Shams Engineering Journal volume: 12 number: 2 pagerange: 1677-1691 refereed: TRUE issn: 20904479 citation: Isah, B.W. and Mohamad, H. and Ahmad, N.R. (2021) Rock stiffness measurements fibre Bragg grating sensor (FBGs) and the effect of cyanoacrylate and epoxy resin as adhesive materials. Ain Shams Engineering Journal, 12 (2). pp. 1677-1691. ISSN 20904479