Volume 20, Issue 4 (April 2020)
Modares Mechanical Engineering 2020, 20(4): 863-876 |
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Sayah Badkhor M, Mirzababaie Mostofi T, Babaei H. Dynamic Response of Metal Powder Subjected to Low-Velocity Impact Loading: Experimental Investigation and Optimization using Response Surface Methodology. Modares Mechanical Engineering 2020; 20 (4) :863-876
URL: http://mme.modares.ac.ir/article-15-36069-en.html
URL: http://mme.modares.ac.ir/article-15-36069-en.html
1- Mechanical Engineering Department, Electrical, Computer & Mechanical Engineering Faculty, University of Eyvanekey, Eyvanekey, Iran
2- Mechanical Engineering Department, Mechanical Engineering Faculty, University of Guilan, Rasht, Iran ,ghbabaei@guilan.ac.ir
2- Mechanical Engineering Department, Mechanical Engineering Faculty, University of Guilan, Rasht, Iran ,
Abstract: (3064 Views)
Manufacturing products using powder compaction is one of the most widely used methods in the industry. In this paper, dynamic compaction of aluminum powder under low-velocity impact loading was investigated using a drop hammer testing machine along with the optimization of effective parameters in this process. In this series of experiments, the green density and green strength of compacted products were measured. The response surface methodology was used to study the influential parameters in the powder compaction process. In this method, the effects of independent parameters including the grain particle size, the hammer mass, and the standoff distance of the hammer on the green density and green strength were evaluated. In the current study, two separate analyses were performed for each output response and the obtained results were summarized in ANOVA tables. The results showed that the p-value for the model is less than 0.05, which means that the model is significant. The values of R2 for the green density and green strength are equal to 0.9956 and 0.9912, respectively. The results of the optimization section indicate that the optimum case, the maximum green density as well as green strength at the same time, occurs when the grain particle size, the hammer mass and the standoff distance of the hammer have the maximum values. The factors o standoff distance of hammer and grain particle size have the highest and least effect on responses.
Article Type: Original Research |
Subject:
Metal Forming
Received: 2019/09/1 | Accepted: 2019/09/24 | Published: 2020/04/17
Received: 2019/09/1 | Accepted: 2019/09/24 | Published: 2020/04/17
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