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Volume 47, Issue 4 (July 2019)
Plane Stress/Strain Compressive Behavior of Perlite Composite Foam
(Received 6 March 2017; accepted 30 January 2018)
Published Online: 2018
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The novel mechanical behavior of perlite/sodium silicate composite foam, a type of syntactic foam made of non-spherical particles, subjected to compression is studied in relation to plane stress and plane strain conditions. Plane stress and plane strain conditions were conceptualized and experimentally verified using various specimen sizes with aspect ratios ranging from 0.25 to 1.5 for compressive strength and modulus. Two distinctive sets of compression properties dependent on plane stress/strain were produced for practical characterization. The greatest compressive strength occurring under plane strain dominant condition was experimentally found to be ∼50 % greater than the lowest value occurring under plane stress dominant condition. The greatest compressive modulus occurring under plane stress dominant condition was also experimentally found to be ∼ 200 % greater than the lowest value occurring under plane strain dominant condition. A new failure mode under plane strain dominant condition for perlite foam was found to be the progressive densification of individual perlite particles.
Khulna University of Engineering & Technology (KUET), Khulna
Kim, Ho Sung
Mechanical Engineering, School of Engineering, The University of Newcastle, Callaghan, NSW
Stock #: JTE20170135
Title Plane Stress/Strain Compressive Behavior of Perlite Composite Foam