Application of the Modified Magnetoelastic Method

Tomáš Klier, Tomáš Míčka, Michal Polák, Milan Hedbávný

Abstract

In technical practice there is very often a requirement of axial force determination in important structural elements of a building or engineering structure during its construction or operational state. In civil engineering practice, five experimental techniques are usually used for evaluation of axial tensile forces in these elements. Each of them has its advantages and disadvantages. One of these methods is the magnetoelastic method. The paper presents general principles of the magnetoelastic method, the magnetoelastic sensor layout and actual information and knowledge about practical application of the new approach based on the magnetoelastic principle on prestressed concrete structures. Subsequently, recent results of the experimental verification and the in situ application of the method are described in the text. The described experimental approach is usable not only for newly built structures but in particular for existing ones. Furthermore, this approach is the only one effectively usable experimental method for determination of the prestressed force on existing prestressed concrete structures in many cases in the technical practice.

Keywords

Concrete, Tensile Force, Magnetoelastic Method, Prestressed Strand, Prestressed Cable, Sensor

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DOI

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IMEKO TC

TC10 - Measurement for Diagnostics, Optimization and Control

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