TY - JOUR
T1 - Analytical and experimental investigation of fatigue crack propagation for polyethylene methacrylate
AU - Liu, Yongshou
AU - Gao, Zongzhan
AU - Liu, Wei
AU - Yue, Zhufeng
PY - 2008/7/15
Y1 - 2008/7/15
N2 - The fatigue crack growth of most polymers is sensitive to temperature. In this paper, tests on fatigue crack growth of polyethylene methacrylate were carried out and the fatigue crack growth rate was obtained at temperature range -50 to 90 °C and frequency 1 Hz. The fatigue crack propagation (FCP) properties of polyethylene methacrylate and metals were studied comparatively and a new modified formula for FCP rate was deduced to describe the polyethylene methacrylate FCP rates. The formula includes four parameters: the FCP threshold, Young's modulus, fracture toughness and stress ratio. The predicted curve based on this modified formula corresponds very well with the test data of polyethylene methacrylate at different temperatures. Therefore, the modified formula can be used to describe the FCP process.
AB - The fatigue crack growth of most polymers is sensitive to temperature. In this paper, tests on fatigue crack growth of polyethylene methacrylate were carried out and the fatigue crack growth rate was obtained at temperature range -50 to 90 °C and frequency 1 Hz. The fatigue crack propagation (FCP) properties of polyethylene methacrylate and metals were studied comparatively and a new modified formula for FCP rate was deduced to describe the polyethylene methacrylate FCP rates. The formula includes four parameters: the FCP threshold, Young's modulus, fracture toughness and stress ratio. The predicted curve based on this modified formula corresponds very well with the test data of polyethylene methacrylate at different temperatures. Therefore, the modified formula can be used to describe the FCP process.
KW - Fatigue crack propagation
KW - Polyethylene methacrylate (PMMA)
KW - Stress intensity factor
KW - Temperature effect
UR - http://www.scopus.com/inward/record.url?scp=42949161638&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2007.09.028
DO - 10.1016/j.msea.2007.09.028
M3 - 文章
AN - SCOPUS:42949161638
SN - 0921-5093
VL - 486
SP - 363
EP - 368
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
IS - 1-2
ER -