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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Advanced Real Time Imaging
Presentation Title Estimation of Interfacial Strain Response for a Bi-material Strip in Tensile and Shear Loading Using THz-TDS
Author(s) Sushrut Karmarkar, Vikas Tomar
On-Site Speaker (Planned) Sushrut Karmarkar
Abstract Scope Terahertz time domain spectroscopy (THz-TDS) is gaining significant traction in the non-destructive evaluation of material properties as well as detection of internal fractures and defects. Correlation of the optical properties, namely the phase delay of the received terahertz wave to the strain state of a single material has been validated. This was achieved using a strontium titanate (STO) doped passive composite sensor. The aerospace and automotive industry relies on a multitude of adhesive joints and multimaterial structural components where it is of interest to estimate and measure the interfacial strain and stress states, especially in shear loading of such components. This study proposes a method to measure the strain response of bi-material strips using a reflection mode THz-TDS by measuring the change in the time of arrival (TOA) of the electromagnetic pulse (EMP) in the THz band. This strain measurement is compared with finite element simulations.
Proceedings Inclusion? Planned:
Keywords Composites,

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Estimation of Interfacial Strain Response for a Bi-material Strip in Tensile and Shear Loading Using THz-TDS
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