TY - GEN
T1 - Energy absorption mechanism of thermoplastic fiber-reinforced plastics under impact loading using split-hopkinson pressure-bar method
AU - Nambu, Ayuta
AU - Adachi, Shogo
AU - Yabu, Tomoya
AU - Ishitsuka, Yuji
AU - Hosoi, Atushi
AU - Kawada, Hiroyuki
N1 - Publisher Copyright:
© 2020 Trans Tech Publications Ltd, Switzerland.
PY - 2020
Y1 - 2020
N2 - The energy absorbing performance in the progressive failure of glass long-fiber-reinforced polyamide was evaluated by using the split Hopkinson pressure-bar method. An impact compression test of glass long-fiber-reinforced polyamide was performed from –30 °C to 90 °C, and the temperature-independent energy absorbing performance was confirmed only for the progressive failure mode. To clarify this phenomenon, compression tests, interlaminar compressive shear tests and mode-I fracture-toughness tests were conducted under static and impact conditions. The compression strength and the shear strength of all specimens decreased with an increase in temperature. The toughness improved with temperature. In addition to the mechanical tests, failure-mode analysis was performed by using a three-dimensional X-ray microscope to clarify the absorbing mechanism. From the above, it was concluded that the temperature-independent energy absorbing performance results from a balance of these mechanical properties against the temperature change.
AB - The energy absorbing performance in the progressive failure of glass long-fiber-reinforced polyamide was evaluated by using the split Hopkinson pressure-bar method. An impact compression test of glass long-fiber-reinforced polyamide was performed from –30 °C to 90 °C, and the temperature-independent energy absorbing performance was confirmed only for the progressive failure mode. To clarify this phenomenon, compression tests, interlaminar compressive shear tests and mode-I fracture-toughness tests were conducted under static and impact conditions. The compression strength and the shear strength of all specimens decreased with an increase in temperature. The toughness improved with temperature. In addition to the mechanical tests, failure-mode analysis was performed by using a three-dimensional X-ray microscope to clarify the absorbing mechanism. From the above, it was concluded that the temperature-independent energy absorbing performance results from a balance of these mechanical properties against the temperature change.
KW - Energy absorption
KW - Fiber-reinforced thermoplastics
KW - Impact properties
KW - Injection molding
KW - Split Hopkinson pressure-bar apparatus
UR - http://www.scopus.com/inward/record.url?scp=85090297852&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85090297852&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.858.47
DO - 10.4028/www.scientific.net/KEM.858.47
M3 - Conference contribution
AN - SCOPUS:85090297852
SN - 9783035716382
T3 - Key Engineering Materials
SP - 47
EP - 52
BT - Polymer Science and Engineering
A2 - Kida, Katsuyuki
PB - Trans Tech Publications Ltd
T2 - 3rd International Conference on Composite Material, Polymer Science and Engineering, CMPSE 2019
Y2 - 24 October 2019 through 25 October 2019
ER -