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On the Thickness Quantification of Composite Materials by Using Lock-In Thermography
1Politecnico di Bari, Viale Japigia, 182, 70126 Bari, Italy. davide.palumbo@poliba.it.
Materials (Basel, Switzerland)
|April 14, 2019
Summary
Lock-in thermography offers accurate non-destructive thickness measurement for composite materials like glass fiber reinforced plastics. This study proposes a procedure to optimize accuracy for aerospace applications.
Area of Science:
- Materials Science
- Non-Destructive Testing
- Aerospace Engineering
Background:
- Accurate thickness control is crucial for composite structural components in aerospace.
- Non-destructive techniques are essential for online measurement of large components like wings and fuselages.
Purpose of the Study:
- To investigate the capabilities of lock-in thermography for thickness measurement.
- To propose an optimized procedure for accurate thickness assessment of composite materials.
- To analyze the influence of key test parameters on measurement accuracy.
Main Methods:
- Employed lock-in thermography technique.
- Utilized an analytical approach for theoretical analysis.
- Conducted experimental tests on a glass fiber reinforced plastic specimen.
- Investigated critical test parameters affecting measurement.
Main Results:
- Demonstrated the effectiveness of lock-in thermography for thickness measurement in composite materials.
- Identified and proposed a procedure to enhance measurement accuracy.
- Analyzed the impact of various parameters on the technique's performance.
Conclusions:
- Lock-in thermography is a viable non-destructive technique for composite material thickness measurement.
- The proposed procedure enhances accuracy for aerospace applications.
- Understanding test parameter limits is essential for reliable results.
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