TY - JOUR
T1 - Study on the interfacial properties of bi-material structures manufactured by injection molding after compression
AU - Wei, Junlei
AU - Sun, Lingyu
AU - Pan, Wenfeng
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/4/1
Y1 - 2023/4/1
N2 - Injection molding after compression (IMAC) is used for manufacturing the bi-material structure. However, the bi-material interface may be the weakest region restricting overall structural performance. Various specimens with discontinuous GF30/PA66 or GF30/PA6 over-molded injection on a continuous CF/PA6 sheet are prepared using the IMAC process. The interfacial shear and cross-tension tensile strength, mode-I/II fracture energy, and overall bending strength are then systematically characterized. The influence interlock features derived from sandpaper grinding, sandblasting, and nano-coating have on the properties are then investigated. It is found that decreasing interface roughness can improve interfacial tensile strength and mode-I fracture energy while weakening shear strength and mode-II fracture energy. These surface pretreatments are also effective for the promotion of overall bending strength. A design matching principle between the material, process, geometry, and properties is ultimately proposed. This work provides the fundamental interfacial properties of IMAC structures for engineering applications.
AB - Injection molding after compression (IMAC) is used for manufacturing the bi-material structure. However, the bi-material interface may be the weakest region restricting overall structural performance. Various specimens with discontinuous GF30/PA66 or GF30/PA6 over-molded injection on a continuous CF/PA6 sheet are prepared using the IMAC process. The interfacial shear and cross-tension tensile strength, mode-I/II fracture energy, and overall bending strength are then systematically characterized. The influence interlock features derived from sandpaper grinding, sandblasting, and nano-coating have on the properties are then investigated. It is found that decreasing interface roughness can improve interfacial tensile strength and mode-I fracture energy while weakening shear strength and mode-II fracture energy. These surface pretreatments are also effective for the promotion of overall bending strength. A design matching principle between the material, process, geometry, and properties is ultimately proposed. This work provides the fundamental interfacial properties of IMAC structures for engineering applications.
KW - Bi-material interface
KW - Injection molding after compression
KW - Interfacial properties
KW - Test
KW - Thermoplastic composites
UR - https://www.scopus.com/pages/publications/85147541959
U2 - 10.1016/j.compstruct.2023.116740
DO - 10.1016/j.compstruct.2023.116740
M3 - 文章
AN - SCOPUS:85147541959
SN - 0263-8223
VL - 309
JO - Composite Structures
JF - Composite Structures
M1 - 116740
ER -