Yield improvement for lost mould rapid infiltration forming process by a multistage fractional factorial split plot design

Yuangyai, Chumpol; Nembhard, Harriet Black; Hayes, Gregory; Antolino, Nicholas E.; Adair, James H.

doi:10.1504/ijnm.2009.027501

Cited by 4 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The variation stream technique is used to identify the source of variation of serial production processes [21][22][23][24][25][26]. However, the conventional model was not designed for a continuous-time process, e.g., a tele-abrasive system.…”

Section: Two-stage Systemmentioning

confidence: 99%

A Variation Reduction in the Tele-Abrasive System: A Study of Human Movement

2021

Self Cite

View full text Add to dashboard Cite

In a tele-abrasive task, it is principally human arm movements that cause variation in the position of the abrasive nozzle, thereby resulting in high operating costs and low productivity. It is difficult to design a system that can minimize the variation that accrues from operators behaving differently, which is difficult to predict. Although skilled operators can reduce this variation, becoming a skillful operator requires a lengthy training period. In this work, a two-stage variation streaming technique was used to extract variation sources in a tele-abrasive system. Furthermore, we propose an integrated human–computer approach to control variation in these systems—an approach that applies an innovative human arm movement pattern incorporated with a Kalman filter into a standard system. A virtual tele-abrasive system was used to validate our approach. Furthermore, compared with conventional systems, the proposed approach will help operators to perform abrasive tasks more comfortably and require a shorter training period.

show abstract

Section: Two-stage Systemmentioning

confidence: 99%

A Variation Reduction in the Tele-Abrasive System: A Study of Human Movement

2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…A multistage fraction factorial split plot design is proposed by Chumpol Yuangyai et al [16] for green yield improvement in a lost mould rapid infiltration process that has been developed to fabricate zirconia ceramic parts. This design allows a relaxation of the randomisation principle, and hence certain experimental runs can be carried out in convenient groups.…”

Section: Literature Reviewmentioning

confidence: 99%

Quality Improvement of Sugar by Two Factor Factorial Experimentation in Optimization of Quantity of Lime and Sulphur Added in the Juice Sulphitation Process of a Sugar Plant

Rajkumar¹,

Malliga

2015

AMM

View full text Add to dashboard Cite

Sugar industry is one of the vital sectors in improving the economy of any country. But, sugar industries are striving hard to increase their profitability due to high cost of sugar production accompanied with low selling price. Without resorting to radical restructuring of sugar plant, but through proper planning, annual savings can be improved. One of the artifices to address this issue is through improving the quality of sugar so that selling price can be increased which in turn generates more revenue to the plant. The Juice Sulphitation process, as applied in the manufacturing of sugar, is a subject of such wide-spread interest. The mixed juice from the mills contains soluble and non-soluble suspended non-sugars. These impurities are to be precipitated by the judicious and controlled addition of Milk of Lime (CaO) and subsequent neutralization by Sulphur Dioxide (SO2) gas. This paper attempts to improve the quality of sugar by optimizing the quantity of lime (in the form of milk of lime) and sulphur (in the form of SO2 gas) added in the juice sulphitation process of a sugar plant. Two factor factorial experimentation was adopted to obtain an optimal combination of lime and sulphur quantities. Data of Transmittancy test on sugar juice was collected by varying the quantities of lime and sulphur. Analysis of Variance (ANOVA) table was plotted which explored the significant effects of individual treatments and interaction effects. Further to this, comparison of treatment means was carried out to find out the best treatment combination values for achieving the optimal quality of sugar from sugarcane.

show abstract