Related Experiment Video
Updated: Jan 5, 2026

Casting Protocols for the Production of Open Cell Aluminum Foams by the Replication Technique and the Effect on Porosity
Published on: December 11, 2014
Damage Characterization during Compression in a Perlite-Aluminum Syntactic Foam
Csilla Kádár1,2,3, František Chmelík4, Dávid Ugi5
1Department of Materials Physics, Eötvös Loránd University, Pázmány P. stny. 1/A, H-1117 Budapest, Hungary. kadar@eik.bme.hu.
Abstract:
Aluminum matrix (Al99.5) syntactic foam containing expanded perlite particles was produced using the pressure infiltration technique. The dominant deformation mechanisms during compression of this foam were determined by sequential k-means analysis of the acoustic emission data. Since the different deformation mechanisms were concurrently active even at small strains, successive unloading and reloading measurement was proposed for cluster identification. The repetitive unloading and reloading allowed us to identify two mechanical parameters, namely the unloading modulus and the loss for unloading-reloading cycles. Based on the correlations among the strain localization within the specimen, the acoustic emission results, the changes in these mechanical parameters, and the transition from quasi-elastic deformation to plasticity were revealed in this material.
More Related Videos
07:46Nanothermite with Meringue-like Morphology: From Loose Powder to Ultra-porous Objects
Published on: December 24, 2017
07:15A Testing Platform for Durability Studies of Polymers and Fiber-reinforced Polymer Composites under Concurrent Hygrothermo-mechanical Stimuli
Published on: December 11, 2014
Related Concept Videos
Pozzolans
Fly ash is...
Porosity in Cement Paste
The balance of water to cement in the mix is...
Behavior of Concrete Under Compressive Load
As the concrete specimen fractures under...
Shrinkage in Concrete
When concrete is still in its plastic state, it can undergo a decrease in volume by about 1% of its absolute volume. This decrease is known as plastic shrinkage. It arises either...
Molecular Weight of Step-Growth Polymers
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
Unsoundness of Aggregate due to Volume Change