Structural Damages in Syntactic Metal Foams Caused by Monotone or Cyclic Compression

Katona, Bálint; Orbulov, Imre Norbert

doi:10.3311/ppme.10346

Cited by 15 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, as for the type 2, typically, 45° shear bands and major deep cracks with low elongation are clear evidences and foam samples often divide into two or more discrete sections. Aside from compressive properties, recently, some researchers focus on other loading types like fatigue and notch sensitivity [41], [62][63][64]. Orbulov et al worked on fatigue behavior of different AMSFs and they claimed that matrix ductility and filler diameter strongly affected the fatigue response [65].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

On the Way to Real Applications: Aluminum Matrix Syntactic Foams

Bolat

Akgün

Gökşenli

2020

European Mechanical Science

View full text Add to dashboard Cite

In recent times, aluminum matrix syntactic foams (AMSFs) have become considerably attractive for many industries such as automotive, aviation, aerospace and composite sector due to their features of low density, good compression strength, perfect energy absorption capacity and good ductility. Since the AMSF includes filler materials providing high porosity, it can be also named as composite foam and can be placed between traditional metal foams and particle reinforced composites. Glass and ceramic hollow spheres, fly ash cenospheres and ceramic porous materials are usually used in the AMSFs, but, lately, different types of fillers being cheaper and stronger have also being investigated. Although many scientific efforts have been made for the last decade to understand mechanical and physical properties of these advanced materials, studies have mainly been performed on relatively small size samples and remained in laboratory. Therefore, there is still room for improvement in terms of fabrication techniques. In this paper, our aims are to scrutinize newest studies about ASMFs, to create new viewpoints and to introduce an alternative bright perspective for probable real applications.

show abstract

Section: Mechanical Propertiesmentioning

confidence: 99%

On the Way to Real Applications: Aluminum Matrix Syntactic Foams

Bolat

Akgün

Gökşenli

2020

European Mechanical Science

View full text Add to dashboard Cite

show abstract

“…In CMFs, the foam structure consists of hollow or porous particles used as fillers, such as ceramic hollow spheres (CHSs), [12] iron hollow spheres, [13] expanded perlite, [14] or lightweight expanded clay aggregate particles (LECAPs). [15] The alloys used as matrix material can vary widely due to different manufacturing processes (e.g., infiltration [16] and powder metallurgy [17] ), but are generally light metal alloys (mostly Al [18,19] and Mg [20,21] ) or alloys with good casting properties (Zn [22,23] and Fe [24,25] ). The application of aluminum alloys is advantageous due to their low density, good corrosion resistance, and ease of casting, which greatly facilitates the manufacturing process.…”

Section: Introductionmentioning

confidence: 99%

Manufacturing and Investigation of In Situ and Ex Situ Produced Aluminum Matrix Foam‐Filled Tubes

et al. 2021

View full text Add to dashboard Cite

Composite metal foams (CMFs) are hybrid structures, which are usually produced from separate parts, and not in one step as functional, structural elements. Functional CMFs are characterized by high strength, high stiffness, and extreme energy absorbing properties compared with conventional metallic foams, which allow them to be used as load‐bearing and energy absorbing elements. Test specimens are made in AlMgSi0.5 tubes with the wall thickness of 5 mm. AlSi12 casting alloy is used as matrix material. To ensure the foam structure porosity, lightweight expanded clay aggregate particles (LECAPs) are used with unimodal and bimodal size distribution. The results show that low‐cost unimodal and bimodal foam‐filled tubes (FFTs) can be produced in situ by inert gas pressure infiltration. Besides their low density, these CMFs achieve high strength, high toughness, and special, functional properties compared with simple metallic foams. After heat treatment, in situ produced bimodal FFTs have the highest energy absorption capacity of an average of 67.2 J cm−3, which is 9% higher than the average value of the ex situ FFTs. Therefore, it is advantageous to produce in situ FFTs, because with proper manufacturing, it requires less machining, making the production easier, while achieving better compressive properties.

show abstract

“…A version of ceramic hollow spheres is built up from ~40 wt.% Al 2 O 3 and 60 wt.% SiO 2 , and these hollow spheres are somewhat cheaper, but have similar properties to pure Al 2 O 3 made ceramic hollow spheres [21]. Orbulov et al studied these materials [22] and explored their production possibilities [23,24], the effect of the fillers size [25] and the matrix material [26], the damage modes [27,28] and even their damping capability [29,30]. Li et al [31] manufactured Al and Al-Mg matrix syntactic foams with glass cenospheres.…”

Section: Introductionmentioning

confidence: 99%

On the Filler Materials of Metal Matrix Syntactic Foams

et al. 2019

Self Cite

View full text Add to dashboard Cite

Metal matrix syntactic foams (MMSFs) are becoming increasingly relevant from the lightweight structural materials point of view. They are also used as energy absorbers and as core materials for sandwich structures. The mechanical properties of MMSFs are extensively influenced by the properties of their filler materials which are used to create and ensure the porosity inside the metal matrix. As the properties of fillers are of such importance in the case of MMSFs, in this paper three different filler materials: (i) ceramic hollow spheres (CHSs), (ii) metallic hollow spheres (MHSs) and (iii) lightweight expanded clay particles (LECAPs), have been investigated in numerous aspects. The investigations cover the microstructural features of the fillers and the basic mechanical properties of the fillers and the produced MMSFs as well. The microstructure was studied by optical and electron microscopy extended by energy-dispersive X-ray spectrometry, while the basic mechanical properties were mapped by standardized compression tests. It was found that in the terms of cost-awareness the LECAPs are the best fillers, because they are ~100 times cheaper than the CHSs or MHSs, but their mechanical properties can be compared to the aforementioned, relatively expensive filler materials and still exceed the properties of the most ‘conventional’ metallic foams.

show abstract

Structural Damages in Syntactic Metal Foams Caused by Monotone or Cyclic Compression

Abstract: Abstract

Cited by 15 publications

References 26 publications

On the Way to Real Applications: Aluminum Matrix Syntactic Foams

On the Way to Real Applications: Aluminum Matrix Syntactic Foams

Manufacturing and Investigation of In Situ and Ex Situ Produced Aluminum Matrix Foam‐Filled Tubes

On the Filler Materials of Metal Matrix Syntactic Foams

Contact Info

Product

Resources

About