http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Themo-Mechanical and Microstructural Modeling of Friction Stir Welding of 6111-T4 Aluminum Alloys
김지훈,Barlat Frederic Gerard,Frédéric Barlat,김종민 대한금속·재료학회 2009 METALS AND MATERIALS International Vol.15 No.1
Plastic deformation and thermal history as well as microstructure evolution of friction stir welded 6111-T4 aluminum alloys were numerically simulated. Material and heat flow during friction stir welding were calculated considering the momentum balance equation and energy balance equation under the steady state condition. Based on the calculated temperature history, the coupled nucleation, growth, and coarsening of precipitates were simulated using microstructural modeling, as proposed by Myhr et al. [7,8]. Finally, the distribution of precipitates was used to calculate the mechanical properties of the weld zone, particularly the yield stress, based on the dislocation theory. The results compared well with the measurements, suggesting that the method can be applicable to predict yield stress.
Aman Paul,Michel Frederich,Roel Uyttenbroeck,PriyankaMalik,Sandrino Filocco,Aurore Richel,Stephanie Heuskin,Taofic Alabi,Rudy Caparros Megido,Thierry Franck,Jerome Bindelle,Philippe Maesen,Frederic Fr 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.4
Insects, particularly those belonging to the family Acrididae (grasshoppers), are commonly consumed as human food in many parts of the world. Grasshoppers of the species Chorthippus parallelus are abundantly found throughout Europe. However, these insects were not consumed by Europeans till now, but could possibly be used as human food, which is why we investigated their chemical composition. We found that they contain high level of proteins (69%), with an excellent amino acid profile and protein digestibility (97%). Furthermore, specimens of C. parallelus have an interesting fatty acids profile and minerals composition. Preliminary toxicity assessment indicates that these insects do not exhibit toxicity towards neutrophil cells (white blood cells). These data suggest that C. parallelus could be considered for human consumption. Rearing trials done during the study show that commercial rearing could be developed to produce sufficient biomass for sustaining human consumption.