Detection and Localization of Delaminations in Thin Carbon Fiber Reinforced Composites with the Ultrasonic Polar Scan

Kersemans, Mathias; Martens, Arvid; Abeele, Koen Van Den; Degrieck, Joris; Zastavnik, Filip; Pyl, Lincy; Sol, Hugo; Paepegem, Wim Van

doi:10.1007/s10921-014-0249-5

Cited by 26 publications

(14 citation statements)

References 28 publications

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“…This is easily understood considering that a delamination divides the original laminate in two sub-laminates, resulting in different boundary conditions. Different boundary conditions invoke different Lamb wave stimulation conditions, and as such yield different H-UPS images [15,30]. This is demonstrated in Figure 10 for a cross-ply [0˝,90˝] S C/E laminate (thickness d = 1.1 mm) provided with water-filled delaminations (with nominal thickness D = 50 µm) at different depth positions.…”

Section: Delaminationmentioning

confidence: 99%

“…Until now, linear wave phenomena were used in the U(B)PS methodology for detecting, assessing and analyzing a range of damage features [24,29,30,33]. However, it is well-known from literature that nonlinear wave phenomena show an increased sensitivity to early stage damage features as well as to certain classes of contact defects [42][43][44][45].…”

Section: Nonlinear U(b)psmentioning

confidence: 99%

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The Ultrasonic Polar Scan for Composite Characterization and Damage Assessment: Past, Present and Future

et al. 2016

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Abstract:In the early 1980's, the ultrasonic polar scan (UPS) technique was developed to assess the fiber direction of composites in a nondestructive way. In spite of the recognition by several researchers as being a sophisticated and promising methodology for nondestructive testing (NDT) and materials science, little advance was made during the following 30 years. Recently however, the UPS technique experienced a strong revival and various modifications to the original UPS setup have been successfully implemented. This revival has exposed several powerful capabilities and interesting applications of the UPS technique for material characterization and damage assessment. This paper gives a short historical overview of the UPS technique for characterizing and inspecting (damaged) fiber-reinforced plastics. In addition, a few future research lines are given, which will further expand the applicability and potential of the UPS method to a broader range of (damaged) materials, bringing the UPS technique to the next level of maturity.

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Section: Delaminationmentioning

confidence: 99%

Section: Nonlinear U(b)psmentioning

confidence: 99%

The Ultrasonic Polar Scan for Composite Characterization and Damage Assessment: Past, Present and Future

et al. 2016

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“…In addition, (fiber reinforced) materials with degraded mechanical properties have also been investigated with the P-UPS technique [34][35][36][37]. As such, P-UPS was proven a useful means for (i) detection of delaminations [34], (ii) the assessment of degradation induced by shear dominated quasistatic hysteresis loading (a small number of sequential loading-unloading cycles) on various fiber reinforced plastics [35], (iii) the semi-quantification of early stage (hidden) corrosion [36], (iv) the detection and even localization of a (hidden) closed surface crack in a laminated glass panel [36] and (v) characterization of multidirectional (sub) surface corrugations [37]. Hence, it is clear that the P-UPS technique is a useful means for the inspection of various materials in different mechanical health.…”

mentioning

confidence: 99%

Damage Signature of Fatigued Fabric Reinforced Plastics in the Pulsed Ultrasonic Polar Scan

et al. 2014

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This study investigates the use of both the amplitude and time-of-flight based pulsed ultrasonic polar scan (P-UPS) for the nondestructive detection and evaluation of fatigue damage in fabric reinforced composites. Several thermoplastic carbon fabric reinforced PPS specimens (CETEX), loaded under various fatigue conditions, have been scanned at multiple material spots according to the P-UPS technique in order to extract material degradation in a quantitative way. The P-UPS results indicate that shear dominated fatigued carbon/PPS goes with a reduction of shear properties combined with large fiber distortions. The P-UPS results of the tension-tension fatigued carbon/PPS samples on the other hand reveal a directional degradation of the stiffness properties, reaching a maximum reduction of −12.8 % along the loading direction. The P-UPS extracted damage characteristics are fully supported by simulations, conventional destructive tests as well as visual inspection. The results demonstrate the excellent capability of the P-UPS method for nondestructively assessing and quantifying both shear-dominated and tension-tension fatigue damage in fabric reinforced plastics.

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“…This is easily understood considering that a delamination divides the original laminate in two sub-laminates which have different boundary conditions, and as a consequence imposes different Lamb wave stimulation conditions [17]. This is demonstrated in Figure 7 for a cross-ply C/E laminate (thickness of 1.1 mm) which is provided with a water-filled (multi-)delamination (thickness of 50 μm).…”

Section: (Multi-)delaminationmentioning

confidence: 99%

Recent Advances in the Ultrasonic Polar Scan Method for Characterizing (Degraded) Fiber Reinforced Plastics

Kersemans¹,

Martens²,

Paepegem³

et al. 2015

Structural Health Monitoring 2015

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Detection and Localization of Delaminations in Thin Carbon Fiber Reinforced Composites with the Ultrasonic Polar Scan

Cited by 26 publications

References 28 publications

The Ultrasonic Polar Scan for Composite Characterization and Damage Assessment: Past, Present and Future

The Ultrasonic Polar Scan for Composite Characterization and Damage Assessment: Past, Present and Future

Damage Signature of Fatigued Fabric Reinforced Plastics in the Pulsed Ultrasonic Polar Scan

Recent Advances in the Ultrasonic Polar Scan Method for Characterizing (Degraded) Fiber Reinforced Plastics

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