Published: Nov 14, 2023
Converted to Gold OA:
DOI: 10.4018/IJMMME.333626
Volume 13
Meng-Ting Chiang, Pei-Ing Lee, Ang-Ying Lin, Tung-Han Chuang
Ultrasonic ribbon bonding has gained much attention due to the endeavor of achieving higher module performance in power electronic packaging. Among all the ribbon materials, Ag ribbon is a promising...
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Ultrasonic ribbon bonding has gained much attention due to the endeavor of achieving higher module performance in power electronic packaging. Among all the ribbon materials, Ag ribbon is a promising candidate due to its superior electrical properties. However, research which has reported the bonding of the ribbon on chip side is scant. Thus, in this study, the authors carried out bonding of the Ag ribbon on various types of metallized wafers to examine the feasibility of Ag ribbon, simulating the bonding scenario on the chip side in power modules. Results revealed that bonding of the Ag ribbon is feasible on those wafers metallized Ag on top. The authors also discussed the implications for the bondability of Ag ribbon with different types of metallization layers.
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Chiang, Meng-Ting, et al. "Ultrasonic Bonding of Ag Ribbon on Si Wafers With Various Backside Metallization." IJMMME vol.13, no.1 2024: pp.1-11. http://doi.org/10.4018/IJMMME.333626
APA
Chiang, M., Lee, P., Lin, A., & Chuang, T. (2024). Ultrasonic Bonding of Ag Ribbon on Si Wafers With Various Backside Metallization. International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME), 13(1), 1-11. http://doi.org/10.4018/IJMMME.333626
Chicago
Chiang, Meng-Ting, et al. "Ultrasonic Bonding of Ag Ribbon on Si Wafers With Various Backside Metallization," International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME) 13, no.1: 1-11. http://doi.org/10.4018/IJMMME.333626
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Published: May 31, 2024
Converted to Gold OA:
DOI: 10.4018/IJMMME.344425
Volume 13
Jose Antonio Marmolejo-Saucedo, Igor Litvinchev, Aitber Bizhanov, Georgiy Yaskov, Tetyana Romanova
The article presents the results of studying the dynamics of changes in the porosity of two-component briquettes and pellets depending on the size of particles and the proportions of components in...
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The article presents the results of studying the dynamics of changes in the porosity of two-component briquettes and pellets depending on the size of particles and the proportions of components in the mixture using an optimized packing of spheres. Knowing the patterns of change in the porosity allows to optimize the strength of the briquette and pellets as well as to improve their behavior in the reduction processes in blast furnaces, steel making furnaces and in direct reduction reactors. A computation experiment based on heuristic simulation model was designed to study the change of the estimated porosity under increasing/substituting the number of larger spherical particles in the mixture of spheres. The results obtained made it possible for the first time to reveal the extreme nature of the change in the porosity of the briquette/pellet with the addition of larger particles, depending on the fractional composition of the briquette. The results obtained open up new opportunities for optimizing the placement of fine-grained materials in the charge of metallurgical furnaces.
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Marmolejo-Saucedo, Jose Antonio, et al. "Estimating Porosity of Agglomerated Products Using Optimized Sphere Packing." IJMMME vol.13, no.1 2024: pp.1-19. http://doi.org/10.4018/IJMMME.344425
APA
Marmolejo-Saucedo, J. A., Litvinchev, I., Bizhanov, A., Yaskov, G., & Romanova, T. (2024). Estimating Porosity of Agglomerated Products Using Optimized Sphere Packing. International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME), 13(1), 1-19. http://doi.org/10.4018/IJMMME.344425
Chicago
Marmolejo-Saucedo, Jose Antonio, et al. "Estimating Porosity of Agglomerated Products Using Optimized Sphere Packing," International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME) 13, no.1: 1-19. http://doi.org/10.4018/IJMMME.344425
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Published: Jul 18, 2024
Converted to Gold OA:
DOI: 10.4018/IJMMME.347911
Volume 13
Oscar E. Sotomayor, Víctor A. Carpio, Carlos W. Díaz
Using exothermic sleeves allows to reduce the volume of the risers required in the casting of ferrous alloys, as well as the amount of metal used, and the costs involved. In this work, flat plates...
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Using exothermic sleeves allows to reduce the volume of the risers required in the casting of ferrous alloys, as well as the amount of metal used, and the costs involved. In this work, flat plates of nodular iron were casted and the effects of the shape and size of the risers were analyzed. For this purpose, risers with two configurations (with and without exothermic sleeves), three shapes (cylindrical, spherical, oval), and two relative sizes (100% volume and 60% volume) were considered. The mixture that would experience a thermite reaction with the highest temperature was defined. Experimental tests and computational simulations were performed, indicating that the spherical sleeves result in the lowest porosity in the risers and the pieces. It was also found that the risers with exothermic sleeves and 60% of the base volume used satisfy the feeding requirements and reduce the defects in the piece.
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Sotomayor, Oscar E., et al. "Study on the Effects of Size-Shape Parameter Variation of Exothermic Riser Sleeves and Its Influence on Temperature Dependent Parameters." IJMMME vol.13, no.1 2024: pp.1-14. http://doi.org/10.4018/IJMMME.347911
APA
Sotomayor, O. E., Carpio, V. A., & Díaz, C. W. (2024). Study on the Effects of Size-Shape Parameter Variation of Exothermic Riser Sleeves and Its Influence on Temperature Dependent Parameters. International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME), 13(1), 1-14. http://doi.org/10.4018/IJMMME.347911
Chicago
Sotomayor, Oscar E., Víctor A. Carpio, and Carlos W. Díaz. "Study on the Effects of Size-Shape Parameter Variation of Exothermic Riser Sleeves and Its Influence on Temperature Dependent Parameters," International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME) 13, no.1: 1-14. http://doi.org/10.4018/IJMMME.347911
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Published: Aug 29, 2024
Converted to Gold OA:
DOI: 10.4018/IJMMME.353392
Volume 13
Gregory Omozuhiomwen Egbe, Stella N. Arinze, Solomon H. Ebenuwa, Emenike Raymond Obi, Augustine O. Nwajana
Managing resource allocation for optimum effectiveness at various levels of maintenance activities is always a challenging task. Optimizing maintenance resources enables an organization to set...
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Managing resource allocation for optimum effectiveness at various levels of maintenance activities is always a challenging task. Optimizing maintenance resources enables an organization to set priorities towards achieving certain goals which are availability and reliability of the equipment for operational excellence. The purpose of this analysis is to determine the optimum resources allocation proportions among the failure modes and to identify the failure modes that have the greatest cumulative effect on the equipment's downtime. This paper presents a methodology using the Pareto analysis in conjunction with failure mode effect and criticality Analysis in maintenance resources optimization. The approach is based on ensuring all failure mode criticality number are considered to obtain the significant failures mode that you should focus on as a priority. The analysis shows that failure mode; FM5, FM 3, FM 2, FM 12, FM 7 and FM 13 are confirmation to the Pareto principle, identifying that most of the downtime of the Instrumentation Air Compressors originated from these failure modes.
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Egbe, Gregory Omozuhiomwen, et al. "Maintenance Resources Optimization Using Pareto Analysis: Instrumentation Air Compressor in Oredo, Nigeria." IJMMME vol.13, no.1 2024: pp.1-14. http://doi.org/10.4018/IJMMME.353392
APA
Egbe, G. O., Arinze, S. N., Ebenuwa, S. H., Obi, E. R., & Nwajana, A. O. (2024). Maintenance Resources Optimization Using Pareto Analysis: Instrumentation Air Compressor in Oredo, Nigeria. International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME), 13(1), 1-14. http://doi.org/10.4018/IJMMME.353392
Chicago
Egbe, Gregory Omozuhiomwen, et al. "Maintenance Resources Optimization Using Pareto Analysis: Instrumentation Air Compressor in Oredo, Nigeria," International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME) 13, no.1: 1-14. http://doi.org/10.4018/IJMMME.353392
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