Abstract

Evaluation tests are conducted in order to verify the design accuracy of vehicle-mounted high-pressure containers that use carbon fiber-reinforced plastic layers. We have developed a method to identify the state of damage generated in carbon fiber-reinforced plastic layers that eventually leads to bursting in these tests, in order to enhance the design accuracy of such containers.For this method, we used acoustic emission technology and processed the measured results into dimensionless data. This enabled us to set threshold values for the appearance of major damage that is the prelude to bursting. For the first time in the world, this makes it possible to terminate the test directly before the bursting takes place.Applying this technology will enhance the design of high-pressure containers by enabling a precise analysis of the state of damage in the carbon fiber-reinforced plastic layer of a high-pressure container.

References

1. (1) https://unece.org/sites/default/files/2023-07/ECE-TRANS-180-Add.13-Amend1e.pdf, (2023/7/17)
2. (2) https://unece.org/sites/default/files/2022-07/R134am4e.pdf, (2022/3/21)
3. (3) https://www.nedo.go.jp/content/100956710.pdf, (2023/2/9)
4. (4) Niwa, Y., Kobayashi, S., Otsu, M.: STUDIES OF SOURCE LOCATION BY ACCOUSTIC EMISSION, Proceedings of the Japan Society of Civil Engineers, Vol. 276, p. 135-147 (1978) (in Japanese)
5. (5) Suzuki, M., Nakanishi, H., Iwamoto, M., Jinen, E., Maekawa, Z., Mori, A., Sun, F.: Studies on Fracture Mechanisms of CFRP by Acoustic Emission Method, Transactions of the Japan Society of Mechanical Engineers Series A, Vol. 53, No. 492, p. 1459-1466 (1987) (in Japanese)
6. (6) Kawasaki, H., Takizawa, M., Nakajima, T., Nakamura, H., Okazaki, J., Nakagawa, K.: Suiatsu Hirou Shiken ni yoru Kouatsu Suiso you CFRP Chikuatsuki he no AE Shiken Tekiyousei Kentou, IIC REVIEW, No. 52, p. 23-28 (2014) (in Japanese)
7. (7) Omori, M., Kawasaki, T., Omori, S., Nakamura, H., Sasaki, T.: AE ha Jyuushin Shuuhasuu wo mochi ita CFRP zai no Sonshou Hyouka Kenkyuu, Reinforced Plastics, Vol. 63, No. 9, p. 434-439 (2017) (in Japanese)
8. (8) Nakajima, T., Kawasaki, H., Sato, A.: Experimental Consideration about AE Sources Location of a Thin CFRP Vessel Pressure Test, Transactions of the Japan Society of Mechanical Engineers Series A, Vol. 79, No. 797, p. 115-118 (2013) (in Japanese)

Author (organization or company)

• Takanori SUZUKI（Innovative Research Excellence, Power Unit & Energy）
• Takashi KUWAYAMA（Innovative Research Excellence, Power Unit & Energy）
• Masamichi KAWABE（Innovative Research Excellence, Power Unit & Energy）
• Ichiro HARADA（Innovative Research Excellence, Power Unit & Energy）
• Toshihiko KANEZAKI（Innovative Research Excellence, Power Unit & Energy）

Publication Information

Article of Honda R&D Technical Review Vol.37 (66 - 71)

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