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Normalization method for asphalt mixture fatigue equation under different loading frequenciesLü Song-tao(吕松涛), ZHENG Jian-long(郑健龙) (National Engineering Laboratory of Highway Maintenance Technology... to analyze the effect of different loading frequencies on the fatigue performance for asphalt mixture, the changing law of asphalt mixture strengths with loading speed was revealed by strength tests......
EXPERIENCE WITH THERMOMECHANICAL FATIGUE UNDER SERVICE-TYPE LOADING C.Berger1,A.Schmidt1,A.Samir1,A.Scholz1 (1.Institute of Materials Technology, Darmstadt University of Technology, Grafenstrasse 2, D-64283 Darmstadt, Germany) Abstract:The thermomechanical fatigue behaviour of different high temperature alloys has been investigated and is under investigation respectively. The creep-fatigue......
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FEI Quanta200扫描电子显微镜进行断口分析和物相能谱分析,试样经超声波酒精清洗吹干,在二次电子模式下观察,加速电压为20 kV. 图1 不同时效状态下合金断裂韧性 Fig. 1 Fracture toughnesses of alloy at different aging treatments 2 结果与分析 2.1 断裂韧性 图1所示为合金在不同时效状态下的断裂韧性.从图1可知:随着...55.5 MPa·m1/2.在以上不同热处理状态下,样品断裂韧性与屈服强度的关系如图2所示.从图2发现样品断裂韧性与屈服强度之间呈显著线性关系,相关性系数为0.96.显然,随着合金屈服强度增加,断裂韧性呈线性降低. 图2 合金断裂韧性与屈服强度的关系 Fig. 2 Relationship between fracture toughness and yield strength 2.2 加工硬化指......
Fracture behavior of high strength Mg-Gd-Y-Zr magnesium alloy GAO Lei(高 磊)1 ,2, CHEN Rong-shi(陈荣石)1, HAN En-hou(韩恩厚)1 1. State Key Laboratory for Corrosion and Protection, Institute of Metal...; Abstract: The fracture behavior......
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of Sn-58Bi-xCNTs composite is insignificant. In addition, the fracture mechanism of CNTs reinforced Sn-Bi composite was analyzed. The corresponding fracture surface comparison between the Sn-58Bi-0.03CNTs composite and the monolithic Sn-58Bi alloy was made to identify the influence of CNTs on the fracture behavior and the reinforcing effect of CNTs. Key words: carbon nanotubes; metal-matrix composites......
. REFERENCES [1]王泓. 材料疲劳裂纹扩展和断裂定量规律的研究[D]. 西安: 西北工业大学, 2002. WANG Hong. Quantitative Assessment of Fatigue and Fracture Properties of Materials[D]. Xi’an: Northwest Industrial University, 2002. [2]江红. 微...断裂力学计算分析[J]. 固体力学学报, 2002, 9(3): 361-365. ZHANG Wen-xiao, GUO Cheng-bi. Thermal fatigue and fracture mechanics analysis of aluminum alloy[J]. Acta Mechanica Solida Sinica, 2002, 9(3): 361-365. [11......
Trans. Nonferrous Met. Soc. China 29(2019) 2099-2108 Fatigue fracture analysis of gear teeth using XFEM Yu WEI, Yong JIANG State Key Laboratory of Powder Metallurgy, School of Materials Science... during service. In this work, a 2D double-tooth model was constructed with periodic boundary conditions. The fatigue fracture behavior of gear teeth was analyzed using the extended finite element method......
