PSI - Issue 52

ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 52 (2024) 611–617

© 2023 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 Professor Ferri Aliabadi Abstract Recently, the electronic personal mobility has been focused for sustainable development goals. The synthetic leather is used as rider suit of personal mobility for comfort. But, the damage of rider suit using synthetic leather will be occurred under outdoor exposure environment. So, this study was examined the effect of outdoor exposure environment on tensile property of synthetic leather (front: polyurethane, back: polyester) for durability of raider suit of personal mobility. The maximum test time of outdoor exposure test was one month (start time: July 2022, test place: Japan (Hino, Tokyo)). The outdoor exposure test was conducted based on Japanese Industrial Standard (JIS) Z 2381. The test surface was front side. Before and after outdoor exposure tests, static tensile tests of synthetic leathers were conducted based on JIS K 6552. Test temperature and humidity were room temperature and 65%RH, respectively. As a result, tensile property of synthetic leather decreased after outdoor exposure test. Generally, the tensile property of polyurethane decrease with an increase of test time. The constituent material on surface of synthetic leather was probably degraded by ultraviolet irradiation. Therefore, tensile property of synthetic leather for personal mobility was mainly affected by ultraviolet irradiation under outdoor exposure environment. Abstract Recently, the electronic personal mobility has been focused for sustainable development goals. The synthetic leather is used as rider suit of personal mobility for comfort. But, the damage of rider suit using synthetic leather will be occurred under outdoor exposure environment. So, this study was examined the effect of outdoor exposure environment on tensile property of synthetic leather (front: polyurethane, back: polyester) for durability of raider suit of personal mobility. The maximum test time of outdoor exposure test was one month (start time: July 2022, test place: Japan (Hino, Tokyo)). The outdoor exposure test was conducted based on Japanese Industrial Standard (JIS) Z 2381. The test surface was front side. Before and after outdoor exposure tests, static tensile tests of synthetic leathers were conducted based on JIS K 6552. Test temperature and humidity were room temperature and 65%RH, respectively. As a result, tensile property of synthetic leather decreased after outdoor exposure test. Generally, the tensile property of polyurethane decrease with an increase of test time. The constituent material on surface of synthetic leather was probably degraded by ultraviolet irradiation. Therefore, tensile property of synthetic leather for personal mobility was mainly affected by ultraviolet irradiation under outdoor exposure environment. Keywords: Synthetic leather; Tensile property; Outdoor exposure, Optical degradation Fracture, Damage and Structural Health Monitoring Effect of Outdoor Exposure on Tensile Property of Synthetic Leather for Personal Mobility Hideaki Katogi a * a Faculty of Human Life Sciences, Jissen Women’s University, 4 -1-1 Osakaue, Hino, Tokyo 191-8510, Japan Fracture, Damage and Structural Health Monitoring Effect of Outdoor Exposure on Tensile Property of Synthetic Leather for Personal Mobility Hideaki Katogi a * a Faculty of Human Life Sciences, Jissen Women’s University, 4 -1-1 Osakaue, Hino, Tokyo 191-8510, Japan

Keywords: Synthetic leather; Tensile property; Outdoor exposure, Optical degradation

* Corresponding author. Tel.: +81-42-585-8897; fax: +81-42-585-8897. E-mail address: katogi-hideaki@jissen.ac.jp * Corresponding author. Tel.: +81-42-585-8897; fax: +81-42-585-8897. E-mail address: katogi-hideaki@jissen.ac.jp

2452-3216 © 2023 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 Professor Ferri Aliabadi 2452-3216 © 2023 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 Professor Ferri Aliabadi

2452-3216 © 2023 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 Professor Ferri Aliabadi 10.1016/j.prostr.2023.12.062