Effect of displacement rate on the mode i fracture behavior of rubber toughened PMMA

Mitsugu Todo; Kiyoshi Takahashi; Philippe Beguelin; H. Henning Kausch

doi:10.1299/kikaia.64.36

Effect of displacement rate on the mode i fracture behavior of rubber toughened PMMA

Mitsugu Todo, Kiyoshi Takahashi, Philippe Beguelin, H. Henning Kausch

Renewable Energy Center

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

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Abstract

Mode I fracture behavior of rubber toughened PMMA (RTPMMA) was studied over five decades of displacement rates (10^-4-13 m/s) using a high-speed tensile testing machine. Two kinds of RTPMMA, extruded RTPMMA containing 20wt.% rubber particles (EM20) and pressed RTPMMA containing 40 wt.% rubber particles (PM40), exhibited different rate dependences of the maximum stress intensity factor K_imax and the maximum energy release rate G_imax. K_imax and G_imax of EM20 decreased rapidly at high rates (1-11 m/s). This suggests that the toughening effect due to rubber blending was dramatically reduced at the high rates. On the other hand, PM40 maintained high A_imax and G_imax values at all rates tested in this study. Thus, PM40 maintained the toughening effect even at high rates up to 13 m/s. For comparison, unmodified PMMA was also examined, and the results showed that K_imaxof neat PMMA increased with the increase in displacement rates and G_imax remained constant as the rate increased. Discussion is given on the rate-dependent K_imax and G_imax values, taking (K_imax)²/G_imax into account. The fracture surface morphology of the specimens is also discussed.

Original language	English
Pages (from-to)	36-43
Number of pages	8
Journal	Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume	64
Issue number	617
DOIs	https://doi.org/10.1299/kikaia.64.36
Publication status	Published - 1998

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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title = "Effect of displacement rate on the mode i fracture behavior of rubber toughened PMMA",

abstract = "Mode I fracture behavior of rubber toughened PMMA (RTPMMA) was studied over five decades of displacement rates (10-4-13 m/s) using a high-speed tensile testing machine. Two kinds of RTPMMA, extruded RTPMMA containing 20wt.% rubber particles (EM20) and pressed RTPMMA containing 40 wt.% rubber particles (PM40), exhibited different rate dependences of the maximum stress intensity factor Kimax and the maximum energy release rate Gimax. Kimax and Gimax of EM20 decreased rapidly at high rates (1-11 m/s). This suggests that the toughening effect due to rubber blending was dramatically reduced at the high rates. On the other hand, PM40 maintained high Aimax and Gimax values at all rates tested in this study. Thus, PM40 maintained the toughening effect even at high rates up to 13 m/s. For comparison, unmodified PMMA was also examined, and the results showed that Kimaxof neat PMMA increased with the increase in displacement rates and Gimax remained constant as the rate increased. Discussion is given on the rate-dependent Kimax and Gimax values, taking (Kimax)2/Gimax into account. The fracture surface morphology of the specimens is also discussed.",

author = "Mitsugu Todo and Kiyoshi Takahashi and Philippe Beguelin and Kausch, {H. Henning}",

year = "1998",

doi = "10.1299/kikaia.64.36",

language = "English",

volume = "64",

pages = "36--43",

journal = "Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A",

issn = "0387-5008",

publisher = "一般社団法人日本機械学会",

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T1 - Effect of displacement rate on the mode i fracture behavior of rubber toughened PMMA

AU - Todo, Mitsugu

AU - Takahashi, Kiyoshi

AU - Beguelin, Philippe

AU - Kausch, H. Henning

PY - 1998

Y1 - 1998

N2 - Mode I fracture behavior of rubber toughened PMMA (RTPMMA) was studied over five decades of displacement rates (10-4-13 m/s) using a high-speed tensile testing machine. Two kinds of RTPMMA, extruded RTPMMA containing 20wt.% rubber particles (EM20) and pressed RTPMMA containing 40 wt.% rubber particles (PM40), exhibited different rate dependences of the maximum stress intensity factor Kimax and the maximum energy release rate Gimax. Kimax and Gimax of EM20 decreased rapidly at high rates (1-11 m/s). This suggests that the toughening effect due to rubber blending was dramatically reduced at the high rates. On the other hand, PM40 maintained high Aimax and Gimax values at all rates tested in this study. Thus, PM40 maintained the toughening effect even at high rates up to 13 m/s. For comparison, unmodified PMMA was also examined, and the results showed that Kimaxof neat PMMA increased with the increase in displacement rates and Gimax remained constant as the rate increased. Discussion is given on the rate-dependent Kimax and Gimax values, taking (Kimax)2/Gimax into account. The fracture surface morphology of the specimens is also discussed.

AB - Mode I fracture behavior of rubber toughened PMMA (RTPMMA) was studied over five decades of displacement rates (10-4-13 m/s) using a high-speed tensile testing machine. Two kinds of RTPMMA, extruded RTPMMA containing 20wt.% rubber particles (EM20) and pressed RTPMMA containing 40 wt.% rubber particles (PM40), exhibited different rate dependences of the maximum stress intensity factor Kimax and the maximum energy release rate Gimax. Kimax and Gimax of EM20 decreased rapidly at high rates (1-11 m/s). This suggests that the toughening effect due to rubber blending was dramatically reduced at the high rates. On the other hand, PM40 maintained high Aimax and Gimax values at all rates tested in this study. Thus, PM40 maintained the toughening effect even at high rates up to 13 m/s. For comparison, unmodified PMMA was also examined, and the results showed that Kimaxof neat PMMA increased with the increase in displacement rates and Gimax remained constant as the rate increased. Discussion is given on the rate-dependent Kimax and Gimax values, taking (Kimax)2/Gimax into account. The fracture surface morphology of the specimens is also discussed.

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Effect of displacement rate on the mode i fracture behavior of rubber toughened PMMA

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