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be made to improve the cycle so that it could be driven by the low grade energy resources. The Kalina cycle and other triple-pressure cycles are suitable for high to medium temperature waste heat... by the waste heat source temperature, and from Fig. 2 it can be seen that the high pressure of the cycle pH will cause the change of the heat source temperature at fixed working concentration......
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of the fatigue tests were characterized by medium degree of scatter. As presented in Table 2, the high size and area fraction of the pores on those samples without ultrasonic degassing suggest the most probable... and Materials Technologies, University of Minho, 4800-058, Portugal Received 28 January 2014; accepted 30 June 2014 Abstract: The effect of high intensity ultrasound based on the novel multi-frequency......
stress and high initial residual stress is expected to cause the residual stresses relaxation. Only a few papers seem to deal with appropriate procedures for fatigue analysis and crack growth...Residual stress relaxation in typical weld joints and its effect on fatigue and crack growth Chunyan JI1,Zhengquan WAN2,Liangbi LI1,Zili WANG1 (1.School of Naval Architecture and Ocean Engineering......
striation and the second-stage of the fatigue crack propagation presented by LAIRD [20], it is believed that the fatigue crack propagates forward some distance in each force cycle, which is induced...Trans. Nonferrous Met. Soc. China 23(2013) 1949-1956 Fatigue behavior of friction stir spot welded AZ31 Mg alloy sheet joints Tian-jiao LUO, Bao-liang SHI, Qi-qiang DUAN, Jun-wei FU, Yuan-sheng YANG......
Thermal Fatigue Behavior of SiC/MBAS Glass Coated Carbon/Carbon Composites () 摘要:The thermal fatigue behavior of C/C composites coated with the SiC/MBAS glass (MoSi_2 particle-containing boron... glass coating had an excellent thermal shock resistance in air at temperature up to 1873 K. During quick thermal cycle between 1873K and room temperature in air, the decrease of mass and mechanical......
Effects of stress ratios on fatigue crack growth of Ti40 alloy at 500 ℃ Fig.4 Relations between ΔK and R for Ti40 alloy at higher R-ratios Taking the FCG rate of 7×10-5 mm/cycle for example..., ZHAO Yong-qing. Factors influencing properties of high stability β-titanium alloy[J]. Heat Treatment of Metals, 2006, 31(341): 23-26. [6] VADUDEVAN A K, SADANANDA K. Classification of fatigue crack......
Effect of Pre-corrosion on Fatigue Life of High Strength Steel 38CrMoAl刘建华School of Materials Science and Engineering, Beihang University摘 要:The effect of pre-corrosion on fatigue behavior of high strength steel 38CrMoAl was investigated with a fatigue test method using the accelerated pre-corrosion specimen in the neutral salt spray environment......
of specimen after breaking fatigue crack propagation and instantaneous fracture regions (a), and striations under high magnification on strut (b) 4 Conclusions 1) The porous alloy exhibits a homogenous pore... with 66% porosity show a typical stress-strain curve of the open-cell foams, and the plateau stress is about 56 MPa. The fatigue strength of the foam is 15.12 MPa at 107 cycles. The fractographic......
and T840 conditions[J]. Transactions of Nonferrous Metals Society of China, 2017, 27(6): 1215-1223. [4] TANG K, HE C, HUANG Q, HUANG Z Y, WANG C, WANG Q Y, LIU Y J, ZHONG B. Very high cycle fatigue... fracture evolution of 6061-T6 aluminum alloy[J]. Optics & Laser Technology, 2016, 77: 169-176. [16] NIE X, HE W, ZANG S, WANG X, ZHAO J. Effect study and application to improve high cycle fatigue......