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https://hdl.handle.net/20.500.14094/90008581
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2024-04-24
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90008581 (fulltext)
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メタデータID
90008581
アクセス権
open access
出版タイプ
Version of Record
タイトル
Fatigue Damage Evaluation of Short Carbon Fiber Reinforced Plastics Based on Thermoelastic Temperature Change and Second Harmonic Components of Thermal Signal
著者
Shiozawa, Daiki ; Sakagami, Takahide ; Nakamura, Yu ; Tamashiro, Takato ; Nonaka, Shinichi ; Hamada, Kenichi ; Shinchi, Tomoaki
著者ID
A0950
研究者ID
1000060379336
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=99816a9f4c32c6b2520e17560c007669
著者名
Shiozawa, Daiki
塩澤, 大輝
シオザワ, ダイキ
所属機関名
工学研究科
著者ID
A0490
研究者ID
1000050192589
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=a6144b6682f46cb9520e17560c007669
著者名
Sakagami, Takahide
阪上, 隆英
サカガミ, タカヒデ
所属機関名
工学研究科
著者名
Nakamura, Yu
著者名
Tamashiro, Takato
著者名
Nonaka, Shinichi
著者名
Hamada, Kenichi
著者名
Shinchi, Tomoaki
収録物名
Materials
巻(号)
14(17)
ページ
4941
出版者
MDPI
刊行日
2021-09
公開日
2021-09-21
抄録
Short fiber reinforced plastics (SFRPs) have excellent moldability and productivity compared to continuous fiber composites. In this study, thermoelastic stress analysis (TSA) was applied to detect delamination defects in short carbon fiber reinforced plastics (SCFRPs). The thermoelastic temperature change ΔTE, phase of thermal signal θE, and second harmonic temperature component ΔTD were measured. In the fatigue test of SCFRP, it was confirmed that changes in ΔTE, θE, and ΔTD appeared in the damaged regions. A staircase-like stress level test for a SCFRP specimen was conducted to investigate the generation mechanism of the ΔTD. The distortion of the temperature change appeared at the maximum tension stress of the sinusoidal load—and when the stress level decreased, the temperature change returned to the original sinusoidal waveform. ΔTD changed according to the change in the maximum stress during the staircase-like stress level test, and a large value of ΔTD was observed in the final ruptured region. A distortion of the temperature change and ΔTD was considered to be caused by the change in stress sharing condition between the fiber and resin due to delamination damage. Therefore, ΔTD can be applied to the detection of delamination defects and the evaluation of damage propagation.
キーワード
nondestructive evaluation
thermoelastic stress analysis
phase analysis
infrared camera
short carbon fiber reinforced plastics
カテゴリ
工学研究科
学術雑誌論文
権利
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
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資源タイプ
journal article
言語
English (英語)
eISSN
1996-1944
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関連情報
DOI
https://doi.org/10.3390/ma14174941
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