The elastic behavior of aluminum alloy foam under uniaxial loading and bending conditions

Triawan, Farid; Kishimoto, Kikuo; Adachi, Tadaharu; Inaba, Kazuaki; Nakamura, Tsuneyoshi; Hashimura, Tohru

doi:10.1016/j.actamat.2012.02.013

Cited by 27 publications

(15 citation statements)

References 21 publications

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“…This mechanism has been extensively studied for foam materials, which also exhibit a kink in their stress-strain dependence, showing a low stress dependence at low pressure and bulk-like behavior at high pressure [29][30][31] . In fact, qualitatively the change in slope in with a simple model that assumes the pressure to be isotropic in the substrate and the film to be experiencing a reduced in plane pressure due strain relaxation within boundaries.…”

Section: Resultsmentioning

confidence: 99%

Deviation from bulk in the pressure-temperature phase diagram of V2O3 thin films

et al. 2017

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We found atypical pressure dependence in the transport measurements of the metal to insulator transition (MIT) in epitaxial thin films of vanadium sesquioxide (V 2 O 3). Three different crystallographic orientations and four thicknesses, ranging from 40 nm to 500 nm, were examined under hydrostatic pressures (P h) of up to 1.5 GPa. All of the films at transition exhibited a four order of magnitude resistance change with transition temperatures ranging from 140 K to 165 K depending on the orientation. This allowed us to build pressure-temperature phase diagrams several orientations and film thicknesses. Interestingly, for pressures below 500 MPa, all samples deviate from bulk behavior and show a weak transition temperature (T c) pressure dependence (dT c /dP h = 1.2x10-2 ±0.3x10-2 K/MPa), which recovers to bulk-like behavior (3.9x10-2 ±0.3x10-2 K/MPa) at higher pressures. Furthermore, we found that pressurization leads to morphological but not structural changes in the films. This indicates that the difference in the thin film and bulk pressure-temperature phase diagrams is most probably due to pressureinduced grain boundary relaxation as well as both plastic and elastic deformations in film microstructure. These results highlight the difference between bulk and thin films behaviors.

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Section: Resultsmentioning

confidence: 99%

Deviation from bulk in the pressure-temperature phase diagram of V2O3 thin films

et al. 2017

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“…The measured compressive force-displacement of the testing machine was fitted using a power function to facilitate the elimination of the machine compliance from the cross-head displacement recorded during the compression test. It has been demonstrated that such a method is convenient and accurate for the measurement of elastic modulus of aluminium foams, with accuracy similar to that based on laser displacement sensor (Triawan et al, 2012).…”

Section: Compression Testmentioning

confidence: 99%

“…Dimensions and relative densities of the prepared samples are presented in Table 1. The average cell size is 2.8-4.5 mm for Alporas foam with relative density ranging from 6.5% to 12.8% (Miyoshi et al, 2000;Sugimura et al, 1997;Triawan et al, 2012) and the potential effect of the number of cells in a sample on measured bulk properties can be neglected for the dimensions of the prepared samples, particularly for the samples with a height of 40 mm (Jeon and Asahina, 2005).…”

Section: Closed-cell Aluminium Foammentioning

confidence: 99%

Cutting-induced end surface effect on compressive behaviour of aluminium foams

Meng

Chai²,

Sun

et al. 2019

European Journal of Mechanics - A/Solids

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Three cutting methods, i.e. electrical discharge machining (EDM), band saw (BS) and water jet (WJ), were used to prepare cuboid samples of closed-cell aluminium Alporas foam. On the end surfaces of the prepared samples, local roughness of mesoscopic structural components (i.e. cell wall, node and facet) and global roughness for the entire cut surface were measured using confocal microscopy. Furthermore, quasi-static uniaxial compression tests were performed with intermittent unloading-reloading. In the initial stage of compression, the measured loading stiffness and unloading elastic modulus are highest, intermediate and lowest for the EDM-cut, BS-cut and WJ-cut samples, respectively. This difference in measured compressive properties has been correlated with the difference in end-surface roughness associated with different cutting methods. However, the peak and plateau of compressive stress and the unloading elastic modulus in the plateau stage are insensitive to cutting method. An analytical model has been developed to elucidate the observed compressive behaviour and shed light on the responsible mechanisms.

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“…Therefore, the mechanical parameters affecting the performance of AF and PU, respectively, also affect the mechanical behavior and structural stability of AF-PU composites. Different relative densities and pore size are two main factors influencing mechanical behavior of AF [13][14][15][16][17][18][19] and the usual influence parameters on the absorbed mechanical energy of PU are frequency, temperature and vibration amplitude [20][21][22][23][24]. In order to understand what kind of AF-PU materials are the most suitable for applying hysteretic damping devices in seismic resistant buildings, we will investigate the damping capacity of AF-PU composites with different corresponding porosity and pore size under different cycling frequency, vibration amplitude, temperature aging and cycle numbers.…”

Section: Introductionmentioning

confidence: 99%

Cyclic compression behavior and energy dissipation of aluminum foam–polyurethane interpenetrating phase composites

Liu

et al. 2015

Composites Part A: Applied Science and Manufacturing

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The elastic behavior of aluminum alloy foam under uniaxial loading and bending conditions

Cited by 27 publications

References 21 publications

Deviation from bulk in the pressure-temperature phase diagram of V2O3 thin films

Deviation from bulk in the pressure-temperature phase diagram of V2O3 thin films

Cutting-induced end surface effect on compressive behaviour of aluminium foams

Cyclic compression behavior and energy dissipation of aluminum foam–polyurethane interpenetrating phase composites

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