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Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

2019

Theses/Dissertations

The University of Akron

Materials Science and Engineering

Non-destructive testing

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Full-Text Articles in Engineering

Interlaminar Damage Detection In Composite Materials, Hariharan Rangarajan Jan 2019

Interlaminar Damage Detection In Composite Materials, Hariharan Rangarajan

Williams Honors College, Honors Research Projects

Using ceramic matrix composites (CMCs) for high-temperature applications in jet engines increases durability and reduces weight and cooling requirements resulting in improved efficiency and fuel savings. Understanding, detecting, and monitoring different types of damage is essential to achieve optimal performance of CMC components. The Direct Current Potential Drop (DCPD) method is a non-destructive technique of estimating damage in composite materials.

DCPD technique works by measuring nodal potential differences when current is flown through the material. Direct current spreading in different woven and laminate composites is modeled to follow a ladder resistor network in which the nodal voltages decrease exponentially as ...