【摘 要】
:
Due to the competition and high cost associated with die casting defects, it is urgent to adopt a rapid and effective method for defect analysis. In this resear
【机 构】
:
National Engineering Research Center for Light Alloy Net Shaping
论文部分内容阅读
Due to the competition and high cost associated with die casting defects, it is urgent to adopt a rapid and effective method for defect analysis. In this research, a novel expert network approach was proposed to avoid some disadvantages of rulebased expert system. The main objective of the system is to assist die casting engineer in identifying defect, determining the probable causes of defect and proposing remedies to eliminate the defect. 14 common die casting defects could be identified quickly by expert system on the basis of their characteristics. BP neural network in combination with expert system was applied to map the complex relationship between causes and defects, and further explained the cause determination process.Cause determination gives due consideration to practical process conditions. Finally, corrective measures were recommended to eliminate the defect and implemented in the sequence of difficulty.
其他文献
Phenolic resin/ montmorillonite intercalation composites were prepared by using the methods of pressing intercalation and melt intercalation. Properties and str
The hydrodynamics and solids mixing behavior in a riser with blunt internals are studied. A uniformradial distribution for solids fraction and particle velocity
A poly (St-co-BA) latex was successfully synthesized by using an organic-inorganic hybrid compound(OIHC), an aliphatic carboxylate sodium/nano-silica composite,
In a new two-phase system ( tetrahydrofuran/ saturated NaCl aqueous solution ) monolayer protected clusters ( MPCs ) were prepared. The AuCl-4 anion in saturate
The ozonation of Cationic Red X-GRL in a semi-batch reactor was studied with variation of the gas flowrate, initial Cationic Red X-GRL concentration, temperatur
A n-Hexyl NH3 Sr2 Nb3 O10 is obtained by the stepwise ion-exchange reaction, then is dispersed interlayer potassium cations of the perovskite niobate are exchan
( PEO )x- ( V0.85 Mo0.15 )2O5 ( x = 0, 0. 5,1.0) nanocomposite films were prepared by a modified sol-gel method. The structure of the films was analyzed by XRD
An affinity adsorbent, Cibacron Blue 3GA immobilized magnetic polyvinyl alcohol (PVA) microsphereswas used for bilirubin removal taking the advantage of easy se
The solutions of poly(acrylic acid)(PAA), poly(acrylic acid sodium)(PAANa) were coated on aluminium fins by roll coating method. The coatings with different cry
大口径 KDP/DKDP 晶体在强紫外光辐照下产生横向受激拉曼散射效应(TSRS),受激放大的拉曼散射光将导致激光能量损失甚至激光损伤,测量 DKDP 晶体 TSRS 增益系数对设置激光装置的