Method and device for actuating and sensing highly nonlinear solitary waves in surfaces, structures, and materials

Institution: University of Pittsburgh

Summary
The proposed technology focuses on the development of an innovative method and related instrumentation for the early detection of structural deficiencies.

Description
The project leverages on the recent discovery of a new class of highly nonlinear solitary waves (HNSWs), which can form and travel in highly nonlinear systems (i.e. granular, layered, fibrous or porous materials). Compared to conventional stress waves used in the existing (sonic-, ultrasonic-, impact-based) technology, HNSWs offer significantly higher tunability in terms of wavelength, wave speed (proportional to the wave amplitude and to the materials properties), number of generated pulses, and amplitude control in a simple and reproducible experimental setup that can be adjusted at will.

Advantage
* Larger tunability range of the frequency, amplitude and velocity of the induced pulses resulting in a broader range of sizes of detectable cracks, defects, inclusions in a material (multiscale defects sensitivity); * Enhanced repeatability of the mea

Category
Engineering

Contact Information
Brian Copple
bcopple@otm.tt.pitt.edu

Keywords
impact_testing, material_classification, structural_testing, tap_test, modal_test, highly_nonlinear_solitary_waves