Damage evaluation in dimension limestone using nonlinear ultrasonics

Dolomitic limestone test samples with increasing levels of damage were obtained by exposing limestone samples to temperature levels of 100 oC, 200 oC, 300 oC, 500 oC, 600 oC, and 700 oC for a period of 90 minutes. The samples were then nondestructively tested using nonlinear ultrasonics in the form of a non-collinear ultrasonic wave mixing approach. In addition, the test samples’ degradation of flexure strength due to damage accumulation caused by the exposure to increasing levels of temperature was also obtained using four-point bending tests. Results using the currently used non-collinear ultrasonic wave mixing approach correlate well (R2 = 92%) with the corresponding obtained reduction in strength, and with results obtained using different transducer arrangements. The approach has potential applications including quantitative evaluation of damage in stone artifacts and well as to evaluate fire-induced damage in stone infrastructure.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Systems & Entrepreneurial Engr

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2019

Author dc:creator

• Love, Joshua E.

Contributors dc:contributor

• Reis, Henrique

• Limestone
• dimension stone
• thermal damage
• damage
• nonlinear ultrasonics
• non-collinear wave mixing
• safety

Statement dc:rights

• Copyright 2019 Joshua E Love

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/104835

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/104835