Parameter Optimization of the Gamma Albedo Method to Control Quality of Coal of Variable Composition

2018 ◽  
Keyword(s):  
Parameter Optimization ◽  
Variable Composition ◽  
Control Quality ◽  
Albedo Method

A study on characteristics evaluation to control quality of asphalt mixture using X-ray CT

2014 ◽  
Vol 15 (4) ◽  
pp. 892-910 ◽  
Author(s):  
Satoshi Taniguchi ◽  
Jun Otani ◽  
Masayuki Kumagai
Keyword(s):  
Asphalt Mixture ◽  
X Ray ◽  
Control Quality

Analysis of Contractor Pay Adjustment Schedule Using Simulation

1996 ◽  
Vol 1544 (1) ◽  
pp. 109-115
Author(s):  
Robert P. Elliott ◽  
Yanjun Qiu
Keyword(s):  
Computer Simulation ◽  
Quality Control ◽  
Quality Assurance ◽  
Quality Index ◽  
Direct Analysis ◽  
Detailed Examination ◽  
Construction Contracts ◽  
Simulation Process ◽  
Control Quality

A common provision in quality control/quality assurance construction contracts is the adjustment of the contractor's pay on the basis of the quality of the construction. The expected impact of the provision on the pay should be examined to ensure that the adjustments are neither unduly severe nor excessively lenient. Most pay adjustment plans have been developed around a quality index by using a percent defective approach. Analyses of these plans are complex but reasonably well defined. Other plans, however, are more complex and do not lend themselves to direct analysis. These plans can be examined by computer simulation. The use of computer simulation to examine a complex pay adjustment provision is demonstrated. The analyses show that simulation can reveal that a pay adjustment schedule behaves differently than it appears on the surface. For example, the schedule examined bases pay solely on averages and appears to ignore construction variability. The analyses, however, demonstrate that the pay adjustments are at least as sensitive to construction variability as they are to construction averages. It is also shown that the simulation process can provide a better, more detailed examination of the pay schedule than is possible by simply determining the expected pay. In particular, the simulation process can provide an indication of the variability of pay at various quality levels and can identify the factors most responsible for pay adjustments.

Numerical Simulation and Parameter Optimization on Forming Process of Automobile Torque Box

2014 ◽  
Vol 722 ◽  
pp. 140-146
Author(s):  
Wen Juan Zhang ◽  
Long Wu ◽  
Gang Chen
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Parameter Optimization ◽  
Process Parameters ◽  
Fem Simulation ◽  
Simulation Software ◽  
Drawing Process ◽  
Forming Process ◽  
Element Simulation

In this paper the drawing process of Box-torque was simulated by Dynaform, which is FEM simulation software. The process parameters, which affected the quality of forming, were optimized by finite element simulation. The emphasis was focus on the optimization of draw-bead and BHF and data were summarized from the optimization graphs. In this simulation, lengthways draw-bead was set on the technical face for reducing or eliminating wrinkle. It was innovation difference from the usual that the draw-bead was set on binder. Finally the correctness of simulation was approved by comparing the optimization of simulation with the data of experimentation.

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