Dynamic compression of functionally-graded metal syntactic foams

2020 ◽  
pp. 113308
Author(s):  
Nima Movahedi ◽  
Matej Vesenjak ◽  
Lovre Krstulović-Opara ◽  
Irina V. Belova ◽  
Graeme E. Murch ◽  
...  
Keyword(s):  
Dynamic Compression ◽  
Functionally Graded ◽  
Syntactic Foams

Fabrication of Bulk Functionally-Graded Syntactic Foams for Impact Energy Absorption

2012 ◽  
Vol 706-709 ◽  
pp. 711-716 ◽  
Author(s):  
Tadaharu Adachi ◽  
Masahiro Higuchi
Keyword(s):  
Theoretical Analysis ◽  
Energy Absorption ◽  
Functionally Graded ◽  
Fabrication Process ◽  
Syntactic Foams ◽  
Compression Tests ◽  
Matrix Resin ◽  
Local Fracture ◽  
Density Distributions ◽  
The Matrix

Function of functionally-graded (FG) foams as energy absorption material for impact was discussed on the basis of theoretical analysis, and fabrication process of the foams was proposed in the paper. The FG foams were found to be useful as impact absorber due to progressively local fracture or cushion in the theoretical analysis. Next the fabrication process of the FG foams was suggested. The graded dispersion of the micro-balloons was conducted before curing the matrix resin in the process. The density distributions in the FG foams were confirmed to be predicted by the numerical analysis on the basis of floating the micro-balloons. Finally, compression tests were carried out to evaluate mechanical properties.

Fatigue characterization of functionally graded ZA27 alloy syntactic foams

2020 ◽  
Vol 798 ◽  
pp. 140255
Author(s):  
Nima Movahedi ◽  
Imre Norbert Orbulov ◽  
Alexandra Kemény ◽  
Irina V. Belova ◽  
Graeme E. Murch ◽  
...  
Keyword(s):  
Functionally Graded ◽  
Syntactic Foams ◽  
Za27 Alloy

Controlling of Distribution of Mechanical Properties in Functionally-Graded Syntactic Foams for Impact Energy Absorption

2012 ◽  
Vol 706-709 ◽  
pp. 729-734 ◽  
Author(s):  
Masahiro Higuchi ◽  
Tadaharu Adachi ◽  
Yuto Yokochi ◽  
Kenta Fujimoto
Keyword(s):  
Mechanical Properties ◽  
Density Distribution ◽  
Energy Absorption ◽  
Impact Energy ◽  
Volume Fraction ◽  
Functionally Graded ◽  
Syntactic Foams ◽  
Compression Tests ◽  
Density Distributions ◽  
Control Distribution

In the study, novel fabrication processes of functionally-graded (FG) syntactic foams were developed to control distribution of the mechanical properties in the FG foams for highly impact energy absorption. In order to control mechanical properties, the density distributions in FG foams were graded by floating phenomenon of the light-weight micro-balloons in matrix resin during curing process. The density distribution in the foam could be controlled by adjusting the average volume fraction and the turning procedure of the mold before grading the micro-balloons in the foam. The compression tests of the fabricated FG foams suggested that the foams had high absorption of impact energy since the foams collapsed progressively due to the grading of the density distribution.

scholarly journals Dynamic compression properties of porous aluminum with functionally graded pore structures

2017 ◽  
Vol 67 (11) ◽  
pp. 576-581
Author(s):  
Yoshihiko Hangai ◽  
Shun Suto ◽  
Takao Utsunomiya ◽  
Hisanobu Kawashima ◽  
Osamu Kuwazuru ◽  
...  
Keyword(s):  
Dynamic Compression ◽  
Functionally Graded ◽  
Porous Aluminum ◽  
Compression Properties ◽  
Pore Structures

705 Controlling of composition in functionally-graded syntactic foams

2011 ◽  
Vol 2011.60 (0) ◽  
pp. _705-1_-_705-2_
Author(s):  
Yuto YOKOCHI ◽  
Masahiro HIGUCHI ◽  
Tadaharu ADACHI
Keyword(s):  
Functionally Graded ◽  
Syntactic Foams

Compressive and flexural properties of functionally graded fly ash cenosphere-epoxy resin syntactic foams

2014 ◽  
Vol 36 (4) ◽  
pp. 685-693 ◽  
Author(s):  
Mrityunjay Doddamani ◽  
Kishore ◽  
Vasanth Chakravarthy Shunmugasamy ◽  
Nikhil Gupta ◽  
H.B. Vijayakumar
Keyword(s):  
Fly Ash ◽  
Epoxy Resin ◽  
Functionally Graded ◽  
Flexural Properties ◽  
Syntactic Foams ◽  
Fly Ash Cenosphere

Quasi-State Compressive Properties of Functionally Graded Aluminum Matrix Syntactic Foams

2021 ◽  
Vol 1035 ◽  
pp. 878-883
Author(s):  
Ming Ming Su ◽  
Mo Qiu Li ◽  
Thomas Fiedler ◽  
Hai Hao
Keyword(s):  
Volume Fraction ◽  
Hollow Spheres ◽  
Aluminum Matrix ◽  
Stir Casting ◽  
Functionally Graded ◽  
Small Range ◽  
Syntactic Foams ◽  
Compression Tests ◽  
Static Compression ◽  
Plateau Stress

The uniform aluminum matrix syntactic foams (SFs) were prepared by the stir casting method, with alumina hollow spheres (2-3 mm and 3-4 mm) and expanded glass (2-3 mm) as reinforcements, and ZL111 aluminum alloy as matrix. The functionally graded aluminum matrix syntactic foams (FG-SFs) were obtained by superimposing two uniform aluminum matrix syntactic foams. Quasi-static compression tests were performed. The plateau stress of FG-SFs containing only hollow spheres decreased slightly with increasing volume fraction of SF containing 3-4 mm hollow spheres. The FG-SFs containing 2-3 mm hollow spheres and 2-3 mm expanded glass showed the highest plateau stress. The energy absorption behavior of all samples fluctuated in a small range. The initial position of shear band depended on the volume fraction of uniform aluminum matrix syntactic foams, reinforcement type and size. The cracks always appeared first in the uniform aluminum matrix syntactic foams containing expanded glass.

Sign in / Sign up

Export Citation Format

Share Document