A novel semi-inverse solution method for elastoplastic torsion of heat treated rods

Meccanica ◽  
2009 ◽  
Vol 45 (3) ◽  
pp. 375-392 ◽  
Author(s):  
Majid Baniassadi ◽  
Akbar Ghazavizadeh ◽  
Rouhollah Rahmani ◽  
Karen Abrinia
Keyword(s):  
Solution Method ◽  
Inverse Solution ◽  
Heat Treated ◽  
Elastoplastic Torsion

Inverse Kinematics Solution and Optimization of 6DOF Handling Robot

2014 ◽  
Vol 635-637 ◽  
pp. 1355-1359 ◽  
Author(s):  
Yan Wu ◽  
Li Hui Cheng ◽  
Guo Feng Fan ◽  
Cai Dong Wang
Keyword(s):  
Inverse Kinematics ◽  
Solution Method ◽  
Algebraic Method ◽  
Inverse Solution ◽  
Optimal Solutions ◽  
Robot System ◽  
Kinematics Model ◽  
Feasible Solutions

The kinematics equation of the handling robot with six free degrees has multiple sets inverse solution, and the robot system only can choose one optimized solutions to drive the robot to work. The kinematics model of the robot is established by D-H method, and the inverse solution is derived by an algebraic method. The best flexibility principle was introduced to determine a set of optimal solutions from 8 sets of feasible solutions. The correctness of robot inverse solution method is verified through a set of calculation examples.

scholarly journals Inverse-solution method for a class of non-classical cochlear models

2009 ◽  
Vol 125 (4) ◽  
pp. 2146-2154 ◽  
Author(s):  
Egbert de Boer ◽  
Alfred L. Nuttall
Keyword(s):  
Solution Method ◽  
Inverse Solution

A Convenient Kinematic Calibration and Inverse Solution Method for 4-DOF Robot

2019 ◽  
Author(s):  
Youqiang Wang ◽  
Chunyu Su ◽  
Haixia Wang ◽  
Zhiguo Zhang ◽  
Chunyang Sheng ◽  
...  
Keyword(s):  
Solution Method ◽  
Inverse Solution ◽  
Kinematic Calibration

Simplified preparation of REBa2Cu3O7−x via the acetate method

1995 ◽  
Vol 10 (1) ◽  
pp. 1-6 ◽  
Author(s):  
J. McHale ◽  
G.H. Myer ◽  
R.E. Salomon
Keyword(s):  
Acetic Acid ◽  
Room Temperature ◽  
Solution Method ◽  
Product Formation ◽  
Barium Acetate ◽  
Amorphous Precursor ◽  
Slow Cooling ◽  
Resistivity Measurements ◽  
Heat Treated ◽  
Yttrium Barium

High-quality bulk REBa2Cu3O7−x (RE = Y,Eu,Gd,Nd,La) was synthesized by a solution method. Stoichiometric amounts of yttrium, barium, and copper acetates were dissolved in glacial acetic acid. The acid was boiled away leaving a glassy acetate precursor. This precursor has shown amorphous scattering in XRD, a phenomenon consistent with atomic level mixing of reactants. The glassy precursor was subsequently heat-treated with a 5 °C/min ramp to 900 °C and a 2 h soak at 900 °C in air. The final product was obtained after heat treatment under oxygen at 550 °C with slow cooling to room temperature. Final products were analyzed by XRD, SEM, and four probe de-resistivity measurements. The mechanism of both precursor and product formation was examined through substitution studies and XRD. It was found that a combination of a rare earth acetate, barium acetate, and acetic acid was necessary for the formation of an amorphous precursor.

scholarly journals Influence of Immersion Period on the Corrosion Behavior of Heat Treated Biomedical Alloy Ti -5Al - 2.5Fe

2009 ◽  
Vol 6 (3) ◽  
pp. 563-569
Author(s):  
Baghdad Science Journal
Keyword(s):  
Body Fluid ◽  
Solution Method ◽  
Phase Region ◽  
Compositional Variation ◽  
Biomedical Implant ◽  
Heat Treated ◽  
Immersion Period ◽  
Biomedical Alloy ◽  
Cooling Media ◽  
Calcium Compounds

Heat treatment by solid solution method in the ?+? phase region was used at 970°C for Ti-5Al-2.5Fe alloy. The specimens cooled under different cooling media [water quenched (WQ), air cooled (AC) and furnace cooled (FC)], and subsequently aged at 550°C for 4 hours. Five specimens from each treatment were immersed in simulated body fluid SBF for a period of time (3 months). The dependence of corrosion rate on compositional variation in the phases resulted from various type of cooling rates are discussed based on immersion tests. The EDXA results show the precipitation of phosphate and calcium compounds on the alloy after 3 months of immersion in blood plasma solution forming a bone-like apatite, which enhanced the alloy biocompatibility making it more suitable to use as biomedical implant.

Direct Observation of Crystalline Ordering In Naturally Graphitized Carbon Produced by Low Grade Metamorphism

1977 ◽  
Vol 35 ◽  
pp. 162-163
Author(s):  
Thomas R. McKee ◽  
Peter R. Buseck
Keyword(s):  
Crystallite Size ◽  
Sedimentary Rocks ◽  
Carbonaceous Material ◽  
Low Grade ◽  
X Ray ◽  
Graphitized Carbon ◽  
Transmission Electron ◽  
Heat Treated ◽  
Commercial Carbon ◽  
Metamorphic Zone

Sediments commonly contain organic material which appears as refractory carbonaceous material in metamorphosed sedimentary rocks. Grew and others have shown that relative carbon content, crystallite size, X-ray crystallinity and development of well-ordered graphite crystal structure of the carbonaceous material increases with increasing metamorphic grade. The graphitization process is irreversible and appears to be continous from the amorphous to the completely graphitized stage. The most dramatic chemical and crystallographic changes take place within the chlorite metamorphic zone.The detailed X-ray investigation of crystallite size and crystalline ordering is complex and can best be investigated by other means such as high resolution transmission electron microscopy (HRTEM). The natural graphitization series is similar to that for heat-treated commercial carbon blacks, which have been successfully studied by HRTEM (Ban and others).

Effect of Shock Loading on the Microstructure of Uniloy 326

1974 ◽  
Vol 32 ◽  
pp. 504-505
Author(s):  
K. P. Staudhammer ◽  
L. E. Murr
Keyword(s):  
Grain Size ◽  
Shock Loading ◽  
Current Investigation ◽  
Two Phase ◽  
05 C ◽  
Shock Deformation ◽  
Heat Treated

The effect of shock loading on a variety of steels has been reviewed recently by Leslie. It is generally observed that significant changes in microstructure and microhardness are produced by explosive shock deformation. While the effect of shock loading on austenitic, ferritic, martensitic, and pearlitic structures has been investigated, there have been no systematic studies of the shock-loading of microduplex structures.In the current investigation, the shock-loading response of millrolled and heat-treated Uniloy 326 (thickness 60 mil) having a residual grain size of 1 to 2μ before shock loading was studied. Uniloy 326 is a two phase (microduplex) alloy consisting of 30% austenite (γ) in a ferrite (α) matrix; with the composition.3% Ti, 1% Mn, .6% Si,.05% C, 6% Ni, 26% Cr, balance Fe.

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