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Experimental Investigation of Laser-Induced Optoacoustic Wave Propagation for Damage Detection


Abstract This thesis intends to cover the experimental investigation of the propagation of laser-generated optoacoustic waves in structural materials and how they can be utilized for damage detection. Firstly, a system for scanning a rectangular patch on the sample is designed. This is achieved with the help of xy stages which are connected to the laser head and allow it to move on a plane. Next, a parametric study was designed to determine the optimum testing parameters of the laser. The parameters so selected were then used in a series of tests which helped in discerning how the Ultrasound Waves behave when damage is induced in the sample (in the form of addition of masses). The first test was of increasing the mases in the sample. The second test... (more)
Created Date 2019
Contributor Ravi Narayanan, Venkateshwaran (Author) / Liu, Yongming (Advisor) / Zhuang, Houlong (Committee member) / Nian, Qiong (Committee member) / Arizona State University (Publisher)
Subject Mechanical engineering / Hilbert-Huang Transform / Lamb Waves / Laser-Ultrasound / Optoacoustic
Type Masters Thesis
Extent 48 pages
Language English
Copyright
Note Masters Thesis Mechanical Engineering 2019
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis