PSI - Issue 37

Available online at www.sciencedirect.com Av ilable o line at w.sciencedire t.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000

www.elsevier.com/locate/procedia

ScienceDirect ScienceDirect

Procedia Structural Integrity 37 (2022) 956–963 Structural Integrity Procedia 00 (2019) 000 – 000

www.elsevier.com/locate/procedia

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira In this paper damage detection and damage localization of imperfect bolted joints is studied numerically using three dimensional explicit finite element simulations. The study is focused on using contact acoustic nonlinearity (CAN) due to interaction of asymmetric guide waves (A 0 ) with imperfect joint surfaces for detecting and locating imperfect joints. Numerically obtained data are processed and it is shown that the CAN can detect and locate defects. The finite element model is used to study several case studies. It is demonstrated that finite element can predict propagation of guided waves in bolted joints. CAN is used for locating the loose bolt. It is demonstrated that FE model followed by signal processing approach used in this study can successfully and accurately detect and locate the imperfect joints. Overall, the findings of this study provide improved physical insights into using CAN for detecting and locating imperfect joints, which can be used to further advance damage detection techniques using nonlinear guided waves Keywords: Structural health monitoring, Nonlinear guided wave, Bolted joint, Contact acoustic nonlinearity 1 Introduction Bolts are widely used in most structures such as pipelines, aircrafts, buildings, bridges and cars due to their several favorable features such as low cost, high bearing capacity, easy installation and implementation and reliability. However, bolted joints are subject to flaws, which can result in connection failure and can have disastrous consequences for the reliability and safety of the structure. Bolted joints failure has always been a significant source In this paper damage detection and damage localization of imperfect bolted joints is studied numerically using three dimensional explicit finite element simulations. The study is focused on using contact acoustic nonlinearity (CAN) due to interaction of asymmetric guide waves (A 0 ) with imperfect joint surfaces for detecting and locating imperfect joints. Numerically obtained data are processed and it is shown that the CAN can detect and locate defects. The finite element model is us to s udy sever l cas stud es. It is de onstra ed that finite element ca pr di t propagation of guid d waves in bolted joints. CAN s sed for locating the loose bolt. It is demons rated that FE model followed by signal process ng approach used in this study can successfully and accurately detect and locate the imperfect joints. Overall, the f ndings of this study provid improved physical insig ts into using CAN for de cting and locating imperfect j ints, which can be u d to further a vance damage detection tech qu s using no lin ar guided w ves Keywords: Structural health m nitoring, Nonlinear guided wave, Bolted joint, Contact acoustic nonlinearity 1 Introduction Bolts are widely used in most structures such as pipelines, aircrafts, buildings, bridges and cars due to their several favorable features such as low cost, high bearing capacity, easy installation and implementation and reliability. However, bolted joints are subject to flaws, which can result in connection failure and can have disastrous consequences for the reliability and safety of the structure. Bolted joints failure has always been a significant source ICSI 2021 The 4th International Conference on Structural Integrity Damage detection and localization in loose bolted joints Reza Soleimanpour a *, Sayed Mohamad Soleimani a , Naser Khaled Mohammad a “ a Department of civil engineering Australian College of Kuwait, Safat 1305, P.O.Box 1411, Kuwait ICSI 2021 The 4th International Conference on Structural Integrity Damage detection and localization in loose bolted joints Reza Soleimanpour a *, Sayed Mohamad Soleimani a , Naser Khaled Mohammad a “ a Department of civil engineeri g Australian College of Kuwait, Safat 1305, P.O.Box 1411, Kuwait Abstract Abstract

* Corresponding author. Tel.: +965-1828225; fax: +96525376222. E-mail address: r.soleimanpour@ack.edu.kw

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira 10.1016/j.prostr.2022.02.031 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira * Corresponding author. Tel.: +965-1828225; fax: +96525376222. E-mail address: r.soleimanpour@ack.edu.kw