MAGNETIC STRIPS TO SIMULATE LAYERED BRITTLE SOLIDS IN CLEAVAGE AND FRACTURE EXPERIMENTS |
| |
Authors: | Francisco GEmmerich Alfredo GCunha Carlos MAGirelli Arnobio IVassem |
| |
Institution: | Laboratory of Carbon and Ceramic Materials, Department of Physics,Universidade Federal do Espirito Santo, 29075-910 Vitoria-ES, Brazil |
| |
Abstract: | A characteristic of the fracture and cleavage experiments is that they are usually intrinsically destructive.Cracks do not completely heal in an unstressed system,even in crystals such as mica.Here,we used magnetic solids composed of magnetic strips for the non-destructive cleavage and brittle fracture experiments.Between the magnetic strips materials with different mechanical characteristics can be inserted,such as Teflon or foam strips,to change the mechanical properties of the solid.For the cleavage experiments,we developed an apparatus where parameters such as the main involved force can be measured easily.By inserting flaws,the magnetic solid can be used in dynamic fracture experiments,with the advantages of simulating macroscopically a non-destructive experiment in an easier way,that happen in real materials with much higher velocities.The apparatus and the used magnetic solid may be useful for demonstrations of fractures in classes. |
| |
Keywords: | layered brittle solids non-destructive measurements cleavage fracture |
本文献已被 CNKI 维普 万方数据 ScienceDirect 等数据库收录! |
|