Tags: micro-cracks

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  1. Modeling of Acoustic Nonlinearity Change in Concrete Due to Microcracks Partially Filled With Alcali Silica Reaction (Asr) Gel

    11 Jan 2021 | Contributor(s):: Smajic, Denis

    Advisors: Laurence J Jacobs, Jin-Yeon Kim, Christine ValleAlkali silica reaction (ASR) is a complex, multi-scale chemomechanical process whichcan lead to the expansion and damage of concrete structures by forming microcracks, graduallyreducing the structure's mechanical properties such as...

  2. Proposal and Analysis of a Non-Collinear Wave Mixing Technique for the Detection of Micro-Cracks Using Phased Arrays

    11 Jan 2021 | Contributor(s):: May, Max Philipp

    Advisors: Laurence J Jacobs, Jin-Yeon Kim, Christine ValleIn this thesis, a new ultrasonic measurement setup for the detection of micro-scale damage in cement based materials is proposed and analyzed. The idea is to use the nonlinear phenomenon of wave mixing to characterize third order elastic...