Experimental investigation on the essential work of mixed-mode fracture of PC/ABS alloy

Huimin Li; Guiping Jiang; Qinzhi Fang; Tiejun Wang

doi:10.1007/s12206-014-1205-0

Experimental investigation on the essential work of mixed-mode fracture of PC/ABS alloy

Huimin Li, Guiping Jiang, Qinzhi Fang, Tiejun Wang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The mixed-mode fracture of polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) alloy is experimentally investigated in this work. The essential work of fracture method is employed to measure the mixed-mode fracture toughness of PC/ABS alloy. Results show that the essential fracture work w_e increases significantly with the decrease in loading angles. Crack initiation angles are measured on the fractured specimens. The deviation of crack growth direction from the initial crack plane also increases with the decrease in loading angles, which corresponds to the increase of shear components. Microfracture processes of PC/ABS alloy with different loading angles are examined in situ by a scanning electron microscope. Crazing structures are clearly seen around the crack tip. The appearance, growth, and coalescence of crazes can be observed in the microfracture processes, and the macrocrack propagation direction is finally determined by the coalesced direction of crazes.

Original language	English
Pages (from-to)	33-38
Number of pages	6
Journal	Journal of Mechanical Science and Technology
Volume	29
Issue number	1
DOIs	https://doi.org/10.1007/s12206-014-1205-0
Publication status	Published - Jan 2015
Externally published	Yes

Keywords

Crack initiation angle
Craze
Essential fracture work
In situ tension observation
Mixed-mode fracture

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10.1007/s12206-014-1205-0

Cite this

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title = "Experimental investigation on the essential work of mixed-mode fracture of PC/ABS alloy",

abstract = "The mixed-mode fracture of polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) alloy is experimentally investigated in this work. The essential work of fracture method is employed to measure the mixed-mode fracture toughness of PC/ABS alloy. Results show that the essential fracture work we increases significantly with the decrease in loading angles. Crack initiation angles are measured on the fractured specimens. The deviation of crack growth direction from the initial crack plane also increases with the decrease in loading angles, which corresponds to the increase of shear components. Microfracture processes of PC/ABS alloy with different loading angles are examined in situ by a scanning electron microscope. Crazing structures are clearly seen around the crack tip. The appearance, growth, and coalescence of crazes can be observed in the microfracture processes, and the macrocrack propagation direction is finally determined by the coalesced direction of crazes.",

keywords = "Crack initiation angle, Craze, Essential fracture work, In situ tension observation, Mixed-mode fracture",

author = "Huimin Li and Guiping Jiang and Qinzhi Fang and Tiejun Wang",

note = "Publisher Copyright: {\textcopyright} 2015, The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg.",

year = "2015",

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doi = "10.1007/s12206-014-1205-0",

language = "English",

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T1 - Experimental investigation on the essential work of mixed-mode fracture of PC/ABS alloy

AU - Li, Huimin

AU - Jiang, Guiping

AU - Fang, Qinzhi

AU - Wang, Tiejun

PY - 2015/1

Y1 - 2015/1

N2 - The mixed-mode fracture of polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) alloy is experimentally investigated in this work. The essential work of fracture method is employed to measure the mixed-mode fracture toughness of PC/ABS alloy. Results show that the essential fracture work we increases significantly with the decrease in loading angles. Crack initiation angles are measured on the fractured specimens. The deviation of crack growth direction from the initial crack plane also increases with the decrease in loading angles, which corresponds to the increase of shear components. Microfracture processes of PC/ABS alloy with different loading angles are examined in situ by a scanning electron microscope. Crazing structures are clearly seen around the crack tip. The appearance, growth, and coalescence of crazes can be observed in the microfracture processes, and the macrocrack propagation direction is finally determined by the coalesced direction of crazes.

AB - The mixed-mode fracture of polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) alloy is experimentally investigated in this work. The essential work of fracture method is employed to measure the mixed-mode fracture toughness of PC/ABS alloy. Results show that the essential fracture work we increases significantly with the decrease in loading angles. Crack initiation angles are measured on the fractured specimens. The deviation of crack growth direction from the initial crack plane also increases with the decrease in loading angles, which corresponds to the increase of shear components. Microfracture processes of PC/ABS alloy with different loading angles are examined in situ by a scanning electron microscope. Crazing structures are clearly seen around the crack tip. The appearance, growth, and coalescence of crazes can be observed in the microfracture processes, and the macrocrack propagation direction is finally determined by the coalesced direction of crazes.

KW - Crack initiation angle

KW - Craze

KW - Essential fracture work

KW - In situ tension observation

KW - Mixed-mode fracture

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Experimental investigation on the essential work of mixed-mode fracture of PC/ABS alloy

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Keywords

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