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Piezo-impedance transducers for residual fatigue life assessment of bolted steel joints
Indian Institute of Technology, New Delhi.
Indian Institute of Technology, New Delhi.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0003-4791-2341
2012 (English)In: Structural Health Monitoring, ISSN 1475-9217, E-ISSN 1741-3168, Vol. 11, no 6, p. 733-750Article in journal (Refereed) Published
Abstract [en]

This article presents a new approach for fatigue life assessment of bolted steel joints using the equivalent stiffness determined by surface-bonded piezo-impedance transducers. The piezo transducers acquire electromechanical admittance signatures comprising the conductance (real part) and the susceptance (imaginary part), from which the equivalent system parameters of the joint are identified. The equivalent stiffness, one of the identified parameters, is experimentally found to be related to the residual stiffness of the joint and is correlated with the remaining life of the component in terms of the cycles of loading that can be further sustained by the joint. Through tests on three prototype steel joints, empirical equations are derived to relate the residual fatigue life to the loss of equivalent identified stiffness. The most promising feature of the proposed approach is that it employs the admittance signature of the surface-bonded piezo transducers directly, thereby circumventing the determination of the in situ stiffness of the joint.

Place, publisher, year, edition, pages
2012. Vol. 11, no 6, p. 733-750
National Category
Building Technologies
Research subject
Steel Structures
Identifiers
URN: urn:nbn:se:ltu:diva-7378DOI: 10.1177/1475921712458708ISI: 000310741500009Scopus ID: 2-s2.0-84868701978Local ID: 5c135277-58e6-4f2d-a78f-7448a3653e85OAI: oai:DiVA.org:ltu-7378DiVA, id: diva2:980267
Note
Validerad; 2012; 20121107 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Veljkovic, Milan

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CiteExportLink to record
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Citation style
  • apa
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