Abstract

Abstract Experimental investigations of laminated timber-concrete and steel-timber-concrete composite floor or bridge beams show that complex failure modes develop in such members. This paper prese...

Highlights

  • Laboratory load tests on laminated structural beam members [1], [2], [3], [4] for floors or bridges [5] consisting of a timber and a concrete layer interconnected with an adhesive, as it is shown in Fig. 1, were performed in the Structures Laboratory at Unauthenticated | Downloaded 11/02/21 12:32 PM UTCI

  • This paper presents acoustic emission investigation results that reveal the development of the failure modes in the steel-timber-concrete composite specimens subjected to short-term static ramploading

  • While the wavelet series of detected acoustic emission signals in the time domain produce a reliable amount of statistical information about the number and intensity of events, a frequency - time domain visualization may facilitate an advanced interpretation on the basis of spectrogram analysis

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Summary

Introduction

Laboratory load tests on laminated structural beam members [1], [2], [3], [4] for floors or bridges [5] consisting of a timber and a concrete layer interconnected with an adhesive, as it is shown in Fig. 1, were performed in the Structures Laboratory at. Laboratory load tests on laminated structural beam members [1], [2], [3], [4] for floors or bridges [5] consisting of a timber and a concrete layer interconnected with an adhesive, as it is shown, were performed in the Structures Laboratory at. Metropolitan State University of Denver and, were reported in detail in prior papers [6], [7] that described Carbon Fiber Reinforced Polymer - Laminated Timber Concrete CFRP-LTC beams. Due to the brittle-type failure of the Laminated Timber-Concrete (LTC) beams, a steel reinforcement was added (embedded in) to the tension fibers of the timber layer ( replacing the CFRP), and the load testing was completed in Spring 2018

Experimental program
Results
Conventional processing
Spectrogram processing and evaluation
Conclusions
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