Degradation monitoring of impact damaged carbon fibre reinforced polymers under fatigue loading with pulse phase thermography

Schmutzler, Henrik; Alder, Marko; Kosmann, N.; Wittich, H.; Schulte, Karl

doi:10.1016/j.compositesb.2013.12.010

Cited by 34 publications

(7 citation statements)

References 29 publications

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“…into intermediate layers [40]. Then, fatigue damage usually gener-754 ates further matrix cracks in the layers whose orientation is per-755 pendicular to the applied cycled loading [41]. Fig.…”

Section: Type Of Multilayer Specimen Materialsmentioning

confidence: 99%

A sparse digital signal model for ultrasonic nondestructive evaluation of layered materials

et al. 2015

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Section: Type Of Multilayer Specimen Materialsmentioning

confidence: 99%

A sparse digital signal model for ultrasonic nondestructive evaluation of layered materials

et al. 2015

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“…Most importantly, the technique is extremely versatile, as it can operate as stand-alone or complementary to other inspection methods [22,23]. The impact damage detectability of IRT depends on the thickness of the material, shape, dimensions, type of damage, and camera hardware sensitivity [24]. Although few previous studies have investigated combined the IRT and PA methods to characterize impact damages in CFRP composites [25][26][27][28], measurements in such studies have been performed with heavy equipment, which is unsuitable for deployment in the field and robotic applications or related to different engineering domains [29].…”

Section: Introductionmentioning

confidence: 99%

Fast, Accurate, and Reliable Detection of Damage in Aircraft Composites by Advanced Synergistic Infrared Thermography and Phased Array Techniques

et al. 2021

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This paper presents an advanced methodology for the detection of damage in aircraft composite materials based on the sensor fusion of two image-based non-destructive evaluation techniques. Both of the techniques, phased-array ultrasonics and infra-red thermography, are benchmarked on an aircraft-grade painted composite material skin panel with stringers. The sensors systems for carrying out the inspections have been developed and miniaturized for being integrated on a vortex-robotic platform inspector, in the framework of a larger research initiative, the Horizon-2020 ‘CompInnova’ project.

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“…Active thermography is another commonly used technique that looks for damage‐induced thermal property variations in structures using infrared (IR) cameras with external heat sources. This technique has been applied to fatigue damage assessment of composite structures, 5,6 but the disadvantage is that it is not capable of continuous monitoring of real operating structures. The digital image correlation (DIC) technique allows real‐time and non‐contact interrogation of the surface displacement as well as strain distributions of composite structures under fatigue loadings 7,8 .…”

Section: Introductionmentioning

confidence: 99%

Fatigue damage detection and growth monitoring for composite structure using coda wave interferometry

Lim

Lee

Skinner

et al. 2020

Struct Control Health Monit

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Summary This paper presents the development of a fatigue damage detection and growth monitoring technique based on coda wave interferometry (CWI) for composite structures. The time domain distortion (TD) component of coda waves, which is typically ignored as noise in the literature, is used and experimentally validated. First, a widely used signal processing method for CWI called the stretching method is applied, and TD component is extracted in the time domain. Next, threshold values are statistically estimated using noise levels of the signal and compared with the amplitude of TD component for detecting early‐stage fatigue damage. A damage index (DI) is then obtained from TD component and used to monitor fatigue damage growth. The experimental results of the damage detection and growth monitoring are validated through visual inspection during the fatigue test. Finally, the developed technique's performance is evaluated by comparing it to conventional ultrasonic and CWI‐based composite fatigue damage assessment methods. The uniqueness of this study lies in (1) detection and growth monitoring of the early‐stage composite fatigue damage, (2) extraction and use of TD component of CWI and investigation of the correlation with the damage existence and growth, and (3) experimental validation and performance examination by comparing with the conventional ultrasonic and CWI‐based composite fatigue damage assessment methods.

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Degradation monitoring of impact damaged carbon fibre reinforced polymers under fatigue loading with pulse phase thermography

Cited by 34 publications

References 29 publications

A sparse digital signal model for ultrasonic nondestructive evaluation of layered materials

A sparse digital signal model for ultrasonic nondestructive evaluation of layered materials

Fast, Accurate, and Reliable Detection of Damage in Aircraft Composites by Advanced Synergistic Infrared Thermography and Phased Array Techniques

Fatigue damage detection and growth monitoring for composite structure using coda wave interferometry

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