Metal Foams and Their Applications in Aerospace Components

Ensarioğlu, Cihat; Bakırcı, Altuğ; Koluk, Huseyin; Çakır, Mustafa

doi:10.1007/978-3-030-91873-6_2

Cited by 7 publications

(6 citation statements)

References 101 publications

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“…Based on the mechanisms ruling PCMT, an innovative manufacturing technology was developed by the authors in this study, proving the possibility to produce closed-cells aluminum foams through the cold spray additive manufacturing technology. The problems encountering when using the traditional PCMT-based manufacturing processes for foams can be overcome through cold spray [10].…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of cold sprayed precursors for closed-cells aluminum foams

Viscusi

2023

Materials Research Proceedings

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Abstract. Metal foams are a relatively new class of materials with many interesting combinations of physical and mechanical properties. Among them, the closed-cells aluminum foams are the most interesting for structural applications in the aerospace industry. There exist different methods to produce metal foams. An innovative manufacturing technique was developed in this study, proving the possibility to produce closed-cells aluminum foams through the cold spray additive manufacturing technology (CS). In particular, two different sets of samples were produced by varying the cold spray process parameters aiming at: i) studying the advantages and the issues of cold spray for manufacturing precursors for metal foams; ii) analyzing the correlation among the CS printing strategy and parameters, the foaming process and the physical and the morphological characteristics of the resulting foams; iii) finally, finding appropriate conditions to form closed-cells aluminum foams via CS.

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Section: Introductionmentioning

confidence: 99%

Experimental analysis of cold sprayed precursors for closed-cells aluminum foams

Viscusi

2023

Materials Research Proceedings

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“…Taşıt ön bölgesinde yer alan çarpışma kolları, çarpışma esnasında oluşan kinetik enerjinin %60-70 'ini sönümleyen darbe emici elemanlardır [2], [3]. Bu elemanlar fazla dayanımlı olursa yolcu kabinine ulaştırılan kuvvetin değeri de fazla olacaktır.…”

Section: Introductionunclassified

Improving the load distribution in the automobile front collision zone by adding 'S' shaped curved collision rail

Bilbay,

Reis,

Gülçimen Çakan

et al. 2023

Pamukkale J Eng Sci

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Bu çalışmada, "S" şeklinde bir çarpışma kolu ile güçlendirilmiş, aracın ön çarpışma bölgesinin performansı, klasik düz çarpışma kolununki ile karşılaştırılmıştır. Taşıtlarda çok yöne ve sürekliliğe sahip yük yollarını çıkarmak amacıyla ön taraftan çarpma senaryosu Hyperworks -Optistruct yazılımı ile modeli oluşturulmuş ve aracın topoloji optimizasyonu yapılmıştır. Çıkarılan yük yolları kullanılarak aracın ön çarpışma bölgesinde yer alan komponentler tasarlanmıştır. Ön çarpışma bölgesi komponentlerinin malzeme özellikleri, bağlantı/temas bölgeleri ve eleman ağ yapılarının oluşturulmasnda Altair Hypermesh yazılımı kullanılmış ve böylece ön işlem adımı tamamlanmıştır. Klasik düz çarpışma koluna sahip ön çarpışma bölgesi ile "S" şeklindeki çarpışma koluyla güçlenedirilmiş ön çarpışma bölgesini karşılaştırmak amacıyla iki farklı çarpışma bölgesi modeli kullanılmış ve analizlerin çözümü için Abaqus çözücüsü kullanılmıştır. Her bir simülasyondan çarpışma bölgesi komponentleri tarafından sönümlenen enerji miktarı, çarpışma bölgesinde meydana gelen toplam deplasman, çarpışma sonucu yolcu kabinine iletilen yükler ve çarpışma kuvvetinin verimliliği (CFE) sonuç olarak elde edilmiştir.In this study, the performance of the front collision zone of the vehicle, reinforced with an S-shaped front collision rail, was compared to that of the classic straight front collision rail. In order to create a safe living cage in automobiles, half vehicle model was used and the collision performances of two different front collision zone models were compared. Torsion, bending and frontal impact scenarios were created with Hyperworks-Optistruct software to obtain versatile and continuous load paths in the vehicle. Vehicle front collision zone elements were designed with Siemens NX software based on the resulting load paths. Altair Hypermesh software was used to create the material properties, connection/contact zones and element mesh structures of the front collision zone components, and thus the preprocessing step was completed. Two different collision zone models were used to compare the collision zone with the classic arm and the one reinforced with the "S" shaped collision arm. The amount of energy absorbed by the collision zone components, the total displacement in the collision zone, the loads transmitted to the passenger cabin and the efficiency of the collision force (CFE) were obtained from each simulation.

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“…Light weighting is a goal pursued by all designers. By reducing the weight, energy efciency increases due to the decreasing energy consumption [20]. Te aerospace industry is constantly looking to integrate advanced materials and manufacturing methods into their airframes to achieve new breakthroughs in lightweight design [21].…”

Section: Introductionmentioning

confidence: 99%

Application of Honeycomb Structures in Key Components of Space Deployable Structures

Yang

Wang

Liu

2022

Advances in Materials Science and Engineering

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The reed structure is the key component in the foldable space deployment mechanism. In the aerospace industry, weight loss occupies a pivotal position. The use of lightweight structure can achieve significant savings in launch costs and improve load efficiency. Aiming at the lightweight requirements of the space deployment mechanism, this paper discusses the substitution effect of the honeycomb topology on the reed structure in the space deployment structure. Firstly, the column structure of the honeycomb is equivalent to an orthotropic cylindrical block-shell structure. According to the bending theory of an orthotropic cylinder, the expanded honeycomb structure equivalent to an orthotropic cylindrical block-shell structure is deduced. Then, the exact expression of the reverse bending moment was obtained, and the bending moment-curvature curve during the folding process was drawn. The bending moment-curvature characteristics during the folding process are simulated by finite element numerical simulation. By proposing the index of unit mass for analysis and comparison, the results show that compared with the common spring steel structure, the honeycomb structure has better mechanical properties per unit mass and has a certain substitution effect on the reed structure.

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Metal Foams and Their Applications in Aerospace Components

Cited by 7 publications

References 101 publications

Experimental analysis of cold sprayed precursors for closed-cells aluminum foams

Experimental analysis of cold sprayed precursors for closed-cells aluminum foams

Improving the load distribution in the automobile front collision zone by adding 'S' shaped curved collision rail

Application of Honeycomb Structures in Key Components of Space Deployable Structures

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