PSI - Issue 28

Available online at www.sciencedirect.com il l li t . i ir t. Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000

www.elsevier.com/locate/procedia

ScienceDirect ir t

Procedia Structural Integrity 28 (2020) 1572–1578 Structural Integrity Procedia 00 (2019) 000–000

www.elsevier.com/locate/procedia

© 2020 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 the European Structural Integrity Society (ESIS) ExCo In this work, the effect of polyurea coating on impact-performance parameters of a woven glass-fibre-reinforced laminate is studied. The study was performed on a specially developed ballistic experimental test rig employing a pneumatic gun. Eleven polymer composite targets with dimensions 200 mm x 300 mm x 8 mm were impacted orthogonally with a steel projectile with 23.8 mm diameter and weight 54.7 g in the range of the impact speed up to 150 m/s. A comparative assessment of the ballistic limit for targets with a 1.2 mm protective coating on the front and rear faces of the target, as well as for samples without any protective coating, was performed. The impact process was captured using two high-speed cameras for filming the front and top views at 25,000 frames per second. Experimental data on the ballistic limit for uncoated and polyurea coated fiberglass plates on the front and back surfaces were obtained. It was shown that 1.2 mm thick coating on the face surface increases the ballistic limit by 20%. The nature of the damage of the GRP base plate and coating has been analyzed. The obtained data can be used for validation of numerical models of ballistic impacts of polyurea-coated laminates. Keywords: polyurea coating; impact; glass-fibre-reinforced laminate, ballistic limit. 1. Introduction Polyurea coatings have been used as a means of increasing the tightness, corrosion resistance and strength of structures in recent years. Many studies have shown that polyurea coatings can be used effectively to protect In this work, the effect of polyurea coating on impact-performance parameters of a woven glass-fibre-reinforced laminate is studied. The study was performed on a specially developed ballistic experimental test rig employing a pneumatic gun. Eleven polymer composite targets with dimensions 200 mm x 300 mm x 8 m were mpacted orthogonally with a steel projectile with 23.8 mm diameter a d weight 54.7 g in the range of the impact speed up to 150 m/s. A comparative assessment of the ballistic limit for targets with a 1.2 mm protective coating on the front and rear faces of th target, as well as for samples without any protective coating, was perform d. Th impact rocess was ca tured using two high-speed cameras f r filming the front and top iews at 25,000 frames per second. Experimental data on t e ballistic limit for uncoat d and polyurea coated fiberglass plates on the front and back surfaces were b in d. It was shown that 1.2 mm th ck coating the face surface incre ses the bal istic limit by 20%. The nature f the dam ge of the GRP base plat and coating ha been nalyzed. The obtained data can be used for validation of numerical models of ballistic impacts of polyurea-coated laminates. Keywords: polyu ea coating; impact; glass-fibre-reinforced lami ate, ballistic limit. 1. Introduction Polyurea coatings have been used as a means of increasing the tightness, corrosion resistance and strength of structures in recent years. Many studies have shown that polyurea coatings can be used effectively to protect * Corresponding author. T l.: +7-919-489-8885; fax: +7-342-239-1361. E-mail address: sazhenkov_na@mail.ru 1st Virtual European Conference on Fracture Polyurea-coated glass-fibre-reinforced laminate under high-speed impact: experimental study N.A. Sazhenkov a* , S.V. Semenov a , L.V. Voronov a , A.D. Kurakin a , Mikhail Sh. Nikhamkin a , T. Stergiou b , K.P. Baxevanakis b , A. Roy b , Vadim V. Silberschmidt b a Aircraft Engines Department, Perm National Research Polytechnic University, Perm, 614990, 29, Komsomolsky prospect, Russia b Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Leicestershire, LE11 3TU, UK Abstract One of the promising methods to increase the resistance of polymer-matrix composite materials to impact damage is the use of protective coatings. 1st Virtual European Conference on Fracture Polyurea-coated glass-fibre-reinforced laminate under high-speed impact: experimental study N.A. Sazhenkov a* , S.V. Semenov a , L.V. Voronov a , A.D. Kurakin a , Mikhail Sh. Nikhamkin a , T. Stergiou b , K.P. Ba evanakis b , A. Roy b , Vadim V. Silberschmidt b a Aircraft Engines Department, Perm National Research Polytechnic University, Perm, 614990, 29, Komsomolsky prospect, Russia b Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Leicestershire, LE11 3TU, UK Abstract One of the promising methods to increase the resistance of polymer-matrix composite materials to impact damage is the use of protective coatings.

2452-3216 © 2020 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 the European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.10.129 2452-3216 © 2020 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 the European Structural Integrity Society (ESIS) ExCo 2452-3216 © 2020 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 the European Structural Integrity Society (ESIS) ExCo * Corresponding author. Tel.: +7-919-489-8885; fax: +7-342-239-1361. E-mail address: sazhenkov_na@mail.ru