Shrinkage Effect of Vacuum Casting Process Parameters using Taguchi Method

Ahmad, Mohd Nazri; Maidin, Nurul Ain; Rahman, Mohd Hidayat Ab; Osman, Mohd Hairizal; Wahid, Mohammad Khalid; Basir, Mohamad Faris Mohd

doi:10.30880/ijie.2019.11.03.026

Cited by 5 publications

(8 citation statements)

References 4 publications

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“…These parameters were selected after several trials and errors during preliminary testing were performed. The range of these selected parameters are also in line with other studies [7,8,16]. Selection of suitable orthogonal array (OA) depends on the total number of degrees of freedom (DOF) of the processing parameters and levels.…”

Section: Processing Parametersupporting

confidence: 68%

“…For vacuum time, similar to deviation (A), the optimum parameter is when vacuum time is at 18min. The study of Ahmad et.al [16] showed the vacuum time was optimized at the minimum vacuum time. Deviation (B) decreases as curing time increases.…”

Section: S/n Ratio Analysismentioning

confidence: 99%

“…The Taguchi method was adopted in order to obtain optimal process parameters for the vacuum casting process. Based on previous studies, the Taguchi method was successfully utilized in the optimization of the vacuum casting process [7,8,16,17].…”

Section: Introductionmentioning

confidence: 99%

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Comparison of different additive manufacturing patterns on the performance of rapid vacuum casting for mating parts via the Taguchi method

Mustafa¹,

Kadir²,

Ngadiman³

et al. 2020

JMES

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Rapid vacuum casting has been proven to be a successful method in producing high-quality parts in small series. However, a challenge lies in the selection of proper Additive Manufacturing (AM) technologies for the development of a master pattern for the vacuum casting process. Each AM technologies differ from one another in terms of dimensional accuracy, surface finish, cost and lead times. The aim of this study is to investigate the performance of casting mating parts based on different additive manufacturing patterns for small batch. Three types of AM-based patterns: Fused Deposition Modeling (FDM), Stereolithography (SLA) and Multi-Jet Fusion (MJF) were compared. The Taguchi method, Signal to Noise ratio (S/N), Analysis of Variance (ANOVA) and T-test were conducted in determining the optimized parameters. From the findings, curing time is shown to be a significant parameter for dimensional accuracy and surface finish. Dimensional deviation varies in different directions of parts. For surface finish, there was only a slight change from the master pattern whereas the surface roughness of casting parts decreased within the range 0.23% to 2.85%. Tolerance grades for the selected dimensions of the parts were in the permissible range, based on ISO286-1:2010. When using distinct kinds of AM patterns to create replacement components, design tolerance is needed. It was suggested to select AM technology similar to that had been used for the original components. Battery cover was selected as a case study to represent the mating application parts.

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Section: Processing Parametersupporting

confidence: 68%

Section: S/n Ratio Analysismentioning

confidence: 99%

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Comparison of different additive manufacturing patterns on the performance of rapid vacuum casting for mating parts via the Taguchi method

Mustafa¹,

Kadir²,

Ngadiman³

et al. 2020

JMES

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“…In addition, E-Learning is the use of media components such as words and pictures to convey content and knowledge [10]. It is also the use of technology tools and devices via computer and internet to improve learning skills and to clarify learning procedures [11]. E-learning is meant to be the use of electronic media and information communication technology in teaching and education [1].…”

Section: 1mentioning

confidence: 99%

“…Multimedia is defined as a combination of computer networks and video technology; it is a mixture between hardware and software as well as media components [12]. Moreover, multimedia also refers to the development and the utilization of different types of media and communication technologies to improve content visualization and use collaboration [13].…”

Section: Multimediamentioning

confidence: 99%

Factors Influencing the Use of Multimedia Technologies in Teaching English Language in Kuwait

Al-Ajmi¹,

Aljazzaf

2020

Int. J. Emerg. Technol. Learn.

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The way of learning and teaching has been improved and the term of learning is developed. Generally, many researchers try to identify the important factors that affect the usage of multimedia in teaching and learning. However, there are few studies in this area specifically in Kuwait. Therefore, this study comes to fill this gab and identify the factors that influence the usage of multimedia technologies in teaching English language in Kuwait. Consequently, a research model is developed. To evaluate the proposed model, questionnaire is developed and the empirical data is collected and analyzed. The results reveal that there are seven factors that have an impact in using multimedia in teaching English subject, which are: facilitation, motivation, performance, behavioral, social, pedagogical, and effort factors. Moreover, the study proves that instructors have positive perceptions of multimedia technologies, but still need more supplements and supports.

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Polymer composites for medical applications as artificial bones

Filip,

Bulanda

2024

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Polymer composites based on epoxy resin (EP) were developed from which anatomical models of artificial cortical bone tissue were obtained. The cancellous was polyurethane foam. To obtain appropriate mechanical properties, the EP was filled with CaCO3 (50, 60, 70 wt%) and a hybrid filler in the form of a mixture of silica and perlite (3/3, 5/5, 7/7 wt%/wt%). Samples for mechanical testing were obtained by vacuum casting in silicone molds. The influence of the type and amount of filler on the mechanical properties of the composite was demonstrated. CaCO3 had a particularly beneficial effect on hardness, compressive stress, and Young's modulus. The obtained anatomical bone model did not differ from natural bone in terms of structure and properties. This type of implants can be used in orthopedics and veterinary medicine.

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Shrinkage Effect of Vacuum Casting Process Parameters using Taguchi Method

Cited by 5 publications

References 4 publications

Comparison of different additive manufacturing patterns on the performance of rapid vacuum casting for mating parts via the Taguchi method

Comparison of different additive manufacturing patterns on the performance of rapid vacuum casting for mating parts via the Taguchi method

Factors Influencing the Use of Multimedia Technologies in Teaching English Language in Kuwait

Polymer composites for medical applications as artificial bones

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