ANALYSIS OF IMPACT DAMAGE USING LINE SCANNING THERMOGRAPHY

Journal Article · Mon Feb 22 04:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3362425· OSTI ID:21371030

Ley, O; Valatka, T; Godinez, V ^[1]; Chung, S; Schutte, J; Dunne, K; Caiazzo, A ^[2]; Bandos, B ^[3]

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1. Mistras Group, Princeton Junction, NJ, 08550 (United States)
2. Materials Sciences Corporation, Horsham, PA, 19044 (United States)
3. Naval Surface Warfare Center, Philadelphia, PA, 19112-5083 (United States)

Impact damage in a composite shaft was studied using Line Scanning Thermography (LST), a novel dynamic thermography technique capable of inspecting large areas in short times. It is expected that projectile impact in a laminate composite will generate a discontinuity that affects heat propagation. Therefore, as heat is deposited over the impacted region, a hot spot will be observed. In this study several impact points were evaluated using UT and LST. Experiments show that assessing impact damage using LST is a dynamic process, which should be accounted for when using dynamic thermography to quantify impact damage extension and severity. The LST images provided information about the region affected by impact damage, which was consistent with the damage region determined using UT. It is seen that the damage areas obtained at early observation time after heat application show small areas with severe damage; and for further times after heat application, the temperature of the hot spots drops and the size of the region affected increases with time following a linear relationship with the observation time.

• OSTI ID: 21371030
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1211; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ACOUSTIC TESTING
AFTER-HEAT
COMPOSITE MATERIALS
DAMAGE
ENERGY TRANSFER
HEAT TRANSFER
HOT SPOTS
IMAGES
MATERIALS
MATERIALS TESTING
MEASURING METHODS
NONDESTRUCTIVE TESTING
TESTING
THERMOGRAPHY
ULTRASONIC TESTING