Influences of relative density and strain rate on the mechanical properties of Al-cenosphere-SWNTs hybrid foams

Muchhala, Dilip; Yadav, B.N.; Pandey, Ashutosh; Chilla, Venkat; Shafeeq, M. Muhamed; Gupta, Gaurav; Sathaiah, Sriram; Mondal, D.P.

doi:10.1016/j.ijmecsci.2021.106388

Cited by 16 publications

(5 citation statements)

References 65 publications

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“…The terms D i (T) , D p (T) , and D e (T) are temperature damage functions. M i (ε̇) , M p (ε̇) , and M e (ε̇) are the strain rate functions [40][41][42] determined by the following equations:…”

Section: Development Of Models To Predict Mechanical Properties Of Pp...mentioning

confidence: 99%

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Experimental Investigation of the Dynamic Mechanical Properties of Polypropylene-Fiber-Reinforced Foamed Concrete at High Temperatures

Chen

Guo

et al. 2023

Polymers

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Polypropylene-fiber-reinforced foamed concrete (PPFRFC) is often used to reduce building structure weight and develop engineering material arresting systems (EMASs). This paper investigates the dynamic mechanical properties of PPFRFC with densities of 0.27 g/cm3, 0.38 g/cm3, and 0.46 g/cm3 at high temperatures and proposes a prediction model to characterize its behavior. To conduct the tests on the specimens over a wide range of strain rates (500 s−1~1300 s−1) and temperatures (25~600 °C), the conventional split-Hopkinson pressure bar (SHPB) apparatus was modified. The test results show that the temperature has a substantial effect on the strain rate sensitivity and density dependency of the PPFRFC. Additionally, the analysis of failure models demonstrates that with the melting of polypropylene fibers, the level of damage in PPFRFC under dynamic loading increases, resulting in the generation of a greater number of fragments.

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Section: Development Of Models To Predict Mechanical Properties Of Pp...mentioning

confidence: 99%

“…To further study the mechanical response of PPFRFC to the temperature and strain rate, a modified prediction model is proposed in Equation ( 8). ε are the strain rate functions [40][41][42] determined by the following equations:…”

Section: Development Of Models To Predict Mechanical Properties Of Pp...mentioning

confidence: 99%

Experimental Investigation of the Dynamic Mechanical Properties of Polypropylene-Fiber-Reinforced Foamed Concrete at High Temperatures

Chen

Guo

et al. 2023

Polymers

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“…Zeng et al [9,10] discussed the differences in the failure modes of shell-infill structures by changing the corrugation angle during compression and three-point bending experiments. Muchhala et al [11] investigated the axial compressive deformation mechanism of cenosphere-reinforced closed-cell hybrid aluminum foams at different strain rates. Vengatachalam et al [12] studied the initial yield response of closed-cell aluminum foams under both uniaxial and biaxial loadings.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Energy Absorption of Integrated AlSi10Mg Shell Structures with BCC Lattice Infill

Bai,

Gao,

Huang

et al. 2023

Chin. J. Mech. Eng.

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Shell-infill structures comprise an exterior solid shell and an interior lattice infill, whose closed features yield superior comprehensive mechanical performance and light weight. Additive manufacturing (AM) can ensure the fabrication of complex structures. Although the mechanical behaviors of lattice structures have been extensively studied, the corresponding mechanical performances of integrated-manufactured shell structures with lattice infills should be systematically investigated due to the coupling effect of the exterior shell and lattice infill. This study investigated the mechanical properties and energy absorption of AlSi10Mg shell structures with a body-centered cubic lattice infill fabricated by AM. Quasi-static compressive experiments and corresponding finite element analysis were conducted to investigate the mechanical behavior. In addition, two different finite element modeling methods were compared to determine the appropriate modeling strategy in terms of deformation behavior. A study of different parameters, including lattice diameters and shell thicknesses, was conducted to identify their effect on mechanical performance. The results demonstrate the mechanical advantages of shell-infill structures, in which the exterior shell strengthens the lattice infill by up to 2.3 times in terms of the effective Young’s modulus. Increasing the infill strut diameter can improve the specific energy absorption by up to 1.6 times.

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“…The most commonly used methods to obtain a bimodal cellular structure are using two different blowing agents [37], two-step depressurization foaming approach [38] and using a polymer blend [39] or nanoparticles [40] as nucleation sites. There is a very great interest on bimodal syntactic foams with metal matrix [31][32][33][34][35][36][37][38][39][40][41][42][43][44] while polymer matrix syntactic foams have received insigni cant scienti c considerations. Eom and Kim [45] fabricated syntactic bimodal foams of polysiloxane/LDPE blends with two different types of polymer microbeads with an average diameter of 20 and 50µ.…”

Section: Introductionmentioning

confidence: 99%

A novel method to develop nanocomposite bimodal foams containing expandable polymeric microballoons: microstructural characteristics

Mohammadian

Azdast

2022

J Porous Mater

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This study aims to develop a novel technique in manufacturing nanocomposite bimodal foams containing expandable polymeric microballoons. Low density polyethylene (LDPE) syntactic foams were prepared via injection molding process, afterwards, a batch refoaming method was utilized to create bimodal structure. The effects of microballoon and nanoclay content and foaming time and temperature on microstructure and physical properties of foams were investigated. The results revealed that refoaming leads to a considerable decrease in density due to nucleation of microcells along with reexpansion of microballoons, as well as CO 2 diffusion in voids between the matrix and microballoon surfaces. Microballoon content has no signi cant effect on cell size of bimodal foams, while a great growth in cell density was observed as its content increased. Results also indicated that at low and high foaming process parameters, melt strength and gas loss are the overcoming phenomena, respectively leading to an optimal processing temperature and time.

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Influences of relative density and strain rate on the mechanical properties of Al-cenosphere-SWNTs hybrid foams

Cited by 16 publications

References 65 publications

Experimental Investigation of the Dynamic Mechanical Properties of Polypropylene-Fiber-Reinforced Foamed Concrete at High Temperatures

Experimental Investigation of the Dynamic Mechanical Properties of Polypropylene-Fiber-Reinforced Foamed Concrete at High Temperatures

Mechanical Properties and Energy Absorption of Integrated AlSi10Mg Shell Structures with BCC Lattice Infill

A novel method to develop nanocomposite bimodal foams containing expandable polymeric microballoons: microstructural characteristics

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