PSI - Issue 16

Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000

www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 16 (2019) 192–197

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” organizers. © 2019 The Author(s). Published by Elsevier B.V. Peer- review under responsibility of the 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” organizers Abstract Nondestructiv testing (NDT) methods are widely used for inspection of long erm exploi ed structures as important part of maintenance strategy. NDT methods can create the background for ma erial optimization u er the ngineering pro edures (e.g., welding) influence also. Principal attention aken i to consideration is the investigation of the c rrelations between measured nondestructively material properties (e.g., specific lectrical conductivity, coercive for e) and paramet r of fatigue crack growth resistance (FCGR n ed d for residual life estimation. In this study th evaluation of aluminum alloys (AA) degradatio in aging a rcraft and AA welded joints characterization based on the specific lectrical conductivity (SEC) measurements are res nted. Eddy current (EC) device for local noncontact SEC with lift off suppres io was developed. For ferrous steel components (steam pipelines, ship bearing elements) the NDT method based on coercive force (CF) measurements by attachable type probes are applied. he EC method based on the magnetic anisotropy (MA) changes under mechanical stress was proposed. © 2019 The Author(s). Published by Elsevier B.V. Peer- review under responsibility of the 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” organizers 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” Development of electromagnetic NDT methods for structural integrity assessment Valentyn Uchanin *, Orest Ostash Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine, 5, Naukova St., Lviv, 79060, Ukraine Abstract Nondestructive testing (NDT) methods are widely used for inspection of long term exploited structures as important part of maintenance strategy. NDT methods can create the background for material optimization under the engineering procedures (e.g., welding) influence also. Principal attention taken into consideration is the investigation of the correlations between measured nondestructively material properties (e.g., specific electrical conductivity, coercive force) and parameters of fatigue crack growth resistance (FCGR) needed for residual life estimation. In this study the evaluation of aluminum alloys (AA) degradation in aging aircraft and AA welded joints characterization based on the specific electrical conductivity (SEC) measurements are presented. Eddy current (EC) device for local noncontact SEC with lift off suppression was developed. For ferrous steel components (steam pipelines, ship bearing elements) the NDT method based on coercive force (CF) measurements by attachable type probes are applied. The EC method based on the magnetic anisotropy (MA) changes under mechanical stress was proposed. 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” Development of electromagnetic NDT methods for structural integrity assessment Valentyn Uchanin *, Orest Ostash Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine, 5, Naukova St., Lviv, 79060, Ukraine Keywords: residual life, material degradation, elecrical conductivity, coercive force, mechanical stress, nondestructive inspection, eddy current

Keywords: residual life, material degradation, elecrical conductivity, coercive force, mechanical stress, nondestructive inspection, eddy current

1. Introduction 1. Introduction

The problem of reliable and long term operation of structures is the subject of the maintenance in combination with permanent condition health monitoring procedures. Last decades we are looking for NDT methods, based on material physical parameters measurements and applicable for structural integrity assessment (Ostash et al. (2007); The problem of reliable and long term operation of structures is the subject of the maintenance in combination with permanent condition health monitoring procedures. Last decades we are looking for NDT methods, based on material physical parameters measurements and applicable for structural integrity assessment (Ostash et al. (2007);

* Corresponding author. Tel.: +38-032-229-6166; fax: +38-032-264-9427. E-mail address: vuchanin@gmail.com

2452-3216 © 2019 The Author(s). Published by Elsevier B.V. Peer- review under responsibility of the 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” organizers 2452-3216 © 2019 The Author(s). Published by Elsevier B.V. Peer- review under responsibility of the 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” organizers * Corresponding author. Tel.: +38-032-229-6166; fax: +38-032-264-9427. E-mail address: vuchanin@gmail.com

2452-3216  2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” organizers. 10.1016/j.prostr.2019.07.040