Inspection of defects of composite materials in inner cylindrical surfaces using endoscopic shearography

Macedo, Fabiano Jorge; Benedet, Mauro Eduardo; Fantin, A. V.; Willemann, Daniel P.; Silva, Fabio Aparecido Alves da; Albertazzi, Armando

doi:10.1016/j.optlaseng.2017.06.005

Cited by 31 publications

(11 citation statements)

References 10 publications

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“…176 The interferometric pattern is then captured and recorded by a charge-coupled device (CCD) camera, which results in a fringe pattern that contains structural information. 177 It has been adopted for inspection and evaluation in various composite products, for example, pipes, 178,179 sandwich structures, 16,17,180 wind turbine blades, 181 aerospace structures, 182–184 as well as racing tyres. 185 An example of standard practice using shearography for polymer composites and sandwich core materials in aerospace is represented by ASTM E2581.…”

Section: Ndt and Evaluation Techniquesmentioning

confidence: 99%

Non-destructive testing and evaluation of composite materials/structures: A state-of-the-art review

Wang

Zhong

Lee

et al. 2020

Advances in Mechanical Engineering

297

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Composite materials/structures are advancing in product efficiency, cost-effectiveness and the development of superior specific properties. There are increasing demands in their applications to load-carrying structures in aerospace, wind turbines, transportation, and medical equipment, etc. Thus robust and reliable non-destructive testing (NDT) of composites is essential to reduce safety concerns and maintenance costs. There have been various NDT methods built upon different principles for quality assurance during the whole lifecycle of a composite product. This paper reviews the most established NDT techniques for detection and evaluation of defects/damage evolution in composites. These include acoustic emission, ultrasonic testing, infrared thermography, terahertz testing, shearography, digital image correlation, as well as X-ray and neutron imaging. For each NDT technique, we cover a brief historical background, principles, standard practices, equipment and facilities used for composite research. We also compare and discuss their benefits and limitations, and further summarise their capabilities and applications to composite structures. Each NDT technique has its own potential and rarely achieves a full-scale diagnosis of structural integrity. Future development of NDT techniques for composites will be directed towards intelligent and automated inspection systems with high accuracy and efficient data processing capabilities.

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Section: Ndt and Evaluation Techniquesmentioning

confidence: 99%

Non-destructive testing and evaluation of composite materials/structures: A state-of-the-art review

Wang

Zhong

Lee

et al. 2020

Advances in Mechanical Engineering

297

View full text Add to dashboard Cite

show abstract

“…The shearography method is best for composite material inspection and analysis of various composite parts (i.e., composite sandwich structures [27,28], composite pipes [29], wind turbine blades, aerospace and automotive structures including racing tires [30]). In aerospace technologies the most commonly used and preferred materials include polymer composites and sandwich core materials.…”

Section: Shearographymentioning

confidence: 99%

“…The main disadvantage of shearography is in 2012) used [20] a laser-based numerical shearography method to detect and localize artificial defects in 4-mm-thick laminates (r = 15, 20, 35, 40 mm) at various depths (1.7, 2.5, 3, 3.2 mm). Delamination was detected using fuzzy neural analysis The shearography method is best for composite material inspection and analysis of various composite parts (i.e., composite sandwich structures [27,28], composite pipes [29], wind turbine blades, aerospace and automotive structures including racing tires [30]). In aerospace technologies the most commonly used and preferred materials include polymer composites and sandwich core materials.…”

Section: Shearographymentioning

confidence: 99%

Current Trends in Integration of Nondestructive Testing Methods for Engineered Materials Testing

Kumpati

Skarka

Ontipuli³

2021

Sensors

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Material failure may occur in a variety of situations dependent on stress conditions, temperature, and internal or external load conditions. Many of the latest engineered materials combine several material types i.e., metals, carbon, glass, resins, adhesives, heterogeneous and nanomaterials (organic/inorganic) to produce multilayered, multifaceted structures that may fail in ductile, brittle, or both cases. Mechanical testing is a standard and basic component of any design and fabricating process. Mechanical testing also plays a vital role in maintaining cost-effectiveness in innovative advancement and predominance. Destructive tests include tensile testing, chemical analysis, hardness testing, fatigue testing, creep testing, shear testing, impact testing, stress rapture testing, fastener testing, residual stress measurement, and XRD. These tests can damage the molecular arrangement and even the microstructure of engineered materials. Nondestructive testing methods evaluate component/material/object quality without damaging the sample integrity. This review outlines advanced nondestructive techniques and explains predominantly used nondestructive techniques with respect to their applications, limitations, and advantages. The literature was further analyzed regarding experimental developments, data acquisition systems, and technologically upgraded accessory components. Additionally, the various combinations of methods applied for several types of material defects are reported. The ultimate goal of this review paper is to explain advanced nondestructive testing (NDT) techniques/tests, which are comprised of notable research work reporting evolved affordable systems with fast, precise, and repeatable systems with high accuracy for both experimental and data acquisition techniques. Furthermore, these advanced NDT approaches were assessed for their potential implementation at the industrial level for faster, more accurate, and secure operations.

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“…Macedo et al [119] employed a novel shearography system with radial sensitivity to analyse the internal surfaces of the flanged joints of composite materials. Experimental results show that this technique can detect faults due to adhesion in flanged joints.…”

Section: Shearography Testingmentioning

confidence: 99%

A review of non-destructive testing on wind turbines blades

2020

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Wind energy, with an exponential growth in the last years, is nowadays one of the most important renewable energy sources. Modern wind turbines are bigger and complex to produce more energy. This industry requires to reduce its operating and maintenance costs and to increase its reliability, safety, maintainability and availability. Condition monitoring systems are beginning to be employed for this purpose. They must be reliable and cost-effective to reduce the long periods of downtimes and high maintenance costs, and to avoid catastrophic scenarios caused by undetected failures. This paper presents a survey about the most important and updated condition monitoring techniques based on non-destructive testing and methods applied to wind turbine blades. In addition, it analyses the future trends and challenges of structural health monitoring systems in wind turbine blades.

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Inspection of defects of composite materials in inner cylindrical surfaces using endoscopic shearography

Cited by 31 publications

References 10 publications

Non-destructive testing and evaluation of composite materials/structures: A state-of-the-art review

Non-destructive testing and evaluation of composite materials/structures: A state-of-the-art review

Current Trends in Integration of Nondestructive Testing Methods for Engineered Materials Testing

A review of non-destructive testing on wind turbines blades

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