ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
New experiment systems that can offer electromechanical and electromagneticcoupling loads were established. Measurement skills and technologies under couplingloads have been developed. The experimental difficulties and technical problems,such as insulation, discharge, compressive testing of brittle ferroelectrics and so on,were well resolved. The constitutive experiments of piezo/ferroelectrics orferromagnetic materials were carried out. Moiré Interferometry was applied to themeasurement of transformation of the crack tip in ferroelectric ceramics undercoupling loads. The deformation concentration near the internal electrode tip causedby non-uniform electric field was investigated by means of Digital SpeckleCorrelation Method (DSCM). With an aim to accomplish both measurements ofconstitutive response of the magnetostrictive materials and the fracture experimentsof general soft ferromagnetic materials, a magnetomechanical-coupling testing setupwas established, which is controlled by an industrial PC. The software wasprogrammed to monitor the testing process and to deal with the acquired data. Thecharacteristic curves of ferromagnetic materials, such as TbxDy1-xFe2 alloys, weremeasured, including the hysteresis loops, the magnetostriction curve and stress-straincurve
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.326-328.5.pdf
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