Time-resolved ex situ Raman/FT-IR spectroscopic study of structural changes in polymeric gears during operation: Towards the development of operando spectroscopic systems for polymer gears
In this study, time-resolved ex situ Raman and Fourier transform infrared (FT-IR) spectroscopy were performed to monitor structural changes in a polyamide (PA) 66 gear during operation and reveal the failure mechanisms of the material. A gear test was performed using a lab-built gear tester, which i...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-09-01
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| Series: | Polymer Testing |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941822001982 |
| _version_ | 1818158162967003136 |
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| author | H. Okubo K. Kobayashi D. Iba I. Moriwaki S. Yao S. Sasaki |
| author_facet | H. Okubo K. Kobayashi D. Iba I. Moriwaki S. Yao S. Sasaki |
| author_sort | H. Okubo |
| collection | DOAJ |
| description | In this study, time-resolved ex situ Raman and Fourier transform infrared (FT-IR) spectroscopy were performed to monitor structural changes in a polyamide (PA) 66 gear during operation and reveal the failure mechanisms of the material. A gear test was performed using a lab-built gear tester, which is a power-absorption type. Raman and FT-IR analyses were performed on the side gear surfaces around the root of the gear (at the side of the active flank), where a bending stress is continuously loaded during operation. The results showed that the crystallinity changed, amide related bonds were broken, trans-gauche (TG) transformation occurred, and a change in the inner stress condition of the PA66 gear occurred over time. It was concluded that these changes interact with each other during operation and are related to the failure of the PA66 gear, such as the initiation of the plastic gear degradation. |
| first_indexed | 2024-12-11T15:25:43Z |
| format | Article |
| id | doaj.art-4b4cd144ce2a4e249ba4cd14a5ab6f80 |
| institution | Directory Open Access Journal |
| issn | 0142-9418 |
| language | English |
| last_indexed | 2024-12-11T15:25:43Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj.art-4b4cd144ce2a4e249ba4cd14a5ab6f802022-12-22T01:00:13ZengElsevierPolymer Testing0142-94182022-09-01113107675Time-resolved ex situ Raman/FT-IR spectroscopic study of structural changes in polymeric gears during operation: Towards the development of operando spectroscopic systems for polymer gearsH. Okubo0K. Kobayashi1D. Iba2I. Moriwaki3S. Yao4S. Sasaki5Kyoto Institute of Technology, Department of Mechanical Engineering, Kyoto, Goshokaidou-chou Matsugasaki Sakyo-ku Kyoto, Kyoto, 606-8585, Japan; Corresponding author.Graduate School, Kyoto Institute of Technology, Department of Mechanical Engineering, Kyoto, Goshokaidou-chou Matsugasaki Sakyo-ku Kyoto, Kyoto, 606-8585, JapanKyoto Institute of Technology, Department of Mechanical Engineering, Kyoto, Goshokaidou-chou Matsugasaki Sakyo-ku Kyoto, Kyoto, 606-8585, JapanKyoto Institute of Technology, Department of Mechanical Engineering, Kyoto, Goshokaidou-chou Matsugasaki Sakyo-ku Kyoto, Kyoto, 606-8585, JapanFukuoka University, Department of Chemical Engineering, 8-19-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, JapanTokyo University of Science, Department of Mechanical Engineering, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, JapanIn this study, time-resolved ex situ Raman and Fourier transform infrared (FT-IR) spectroscopy were performed to monitor structural changes in a polyamide (PA) 66 gear during operation and reveal the failure mechanisms of the material. A gear test was performed using a lab-built gear tester, which is a power-absorption type. Raman and FT-IR analyses were performed on the side gear surfaces around the root of the gear (at the side of the active flank), where a bending stress is continuously loaded during operation. The results showed that the crystallinity changed, amide related bonds were broken, trans-gauche (TG) transformation occurred, and a change in the inner stress condition of the PA66 gear occurred over time. It was concluded that these changes interact with each other during operation and are related to the failure of the PA66 gear, such as the initiation of the plastic gear degradation.http://www.sciencedirect.com/science/article/pii/S0142941822001982Polymeric gearsWearEx situRamanFT-IR |
| spellingShingle | H. Okubo K. Kobayashi D. Iba I. Moriwaki S. Yao S. Sasaki Time-resolved ex situ Raman/FT-IR spectroscopic study of structural changes in polymeric gears during operation: Towards the development of operando spectroscopic systems for polymer gears Polymer Testing Polymeric gears Wear Ex situ Raman FT-IR |
| title | Time-resolved ex situ Raman/FT-IR spectroscopic study of structural changes in polymeric gears during operation: Towards the development of operando spectroscopic systems for polymer gears |
| title_full | Time-resolved ex situ Raman/FT-IR spectroscopic study of structural changes in polymeric gears during operation: Towards the development of operando spectroscopic systems for polymer gears |
| title_fullStr | Time-resolved ex situ Raman/FT-IR spectroscopic study of structural changes in polymeric gears during operation: Towards the development of operando spectroscopic systems for polymer gears |
| title_full_unstemmed | Time-resolved ex situ Raman/FT-IR spectroscopic study of structural changes in polymeric gears during operation: Towards the development of operando spectroscopic systems for polymer gears |
| title_short | Time-resolved ex situ Raman/FT-IR spectroscopic study of structural changes in polymeric gears during operation: Towards the development of operando spectroscopic systems for polymer gears |
| title_sort | time resolved ex situ raman ft ir spectroscopic study of structural changes in polymeric gears during operation towards the development of operando spectroscopic systems for polymer gears |
| topic | Polymeric gears Wear Ex situ Raman FT-IR |
| url | http://www.sciencedirect.com/science/article/pii/S0142941822001982 |
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