The oxidation of both low and high-activity simple and Pt-modified aluminide coatings on nickel base superalloy IN738 has been studied in static air at 1100 OC up to 1000 h. For all coatings oxidation followed a parabolic law up to 400 h. The two Pt-modified coatings showed better protectiveness with lower mass gains and smaller rate constants, especially for long reaction times. The presence o...

Environmental barrier coatings (EBCs) are increasingly being used in the high-temperature sections of gas turbines because their protective effects on SiC fiber-reinforced ceramic matrix composites (SiCf/SiC CMCs) when subjected to water oxygen corrosion. The objective this study was investigate failure behavior EBCs prepared SiCf/SiC CMC materials under coupled and load conditions. A plasma sp...

• Build a 3D wheel-rail transient explicit rolling contact FE model considering rail spalling failure. Investigate dynamic response characteristics when the train passes area under different conditions. Use wavelet transform technique to process signal and detect defects dynamically. The length of has great influence on interaction its limit is found. Rail typical form fatigue (RCF), difficult ...

Abstract In order to solve the problem of support crushing, rib spalling, and partial roof fall in working face crossing fault structure area, taking II1023 Haizi Mine as engineering background, numerical simulation, theoretical analysis, field measurement were used simulate rock activity law process fault. Based on this, mechanical model interaction between surrounding area was established, ca...

Surrounding rock control and support stability in the process of coal seam mining ultra-large height face are key to normal mine operation. In this study, roof movement deformation an analyzed, working resistance is obtained by introducing equivalent immediate roof. By analyzing wall spalling, multiple positions spalling required force obtained. At same time, supports more prone instability pro...

Qadir Bux alias Imran Latif*, Ismail Abdul Rahman*, Ahmad Mujahid Ahmad Zaidi**, Kamran Latif, Aftab Hameed*, Sasitharan Nagapan * * Faculty of Civil and Environmental Engineering, Tun Hussein Onn Malaysia University (UTHM), 86400, Parit Raja, Johor, Malaysia ** Department of Mechanical Engineering, Faculty of Engineering, National Defence University of Malaysia (UPNM), 57000, Kem Sungai Besi, ...