Nondestructive Testing in Composite Materials

Meola, Carosena

doi:10.3390/app10155123

Cited by 7 publications

(5 citation statements)

References 15 publications

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“…Compared with traditional ultrasonic nondestructive testing, translucent visual inspection significantly improves inspection efficiency and reduces inspection costs. As the developed composite materials can transmit light with a light source, the semi-transparent visual inspection of the composite material parts can be carried out utilizing optical aids (Meola, 2020). The translucent visual inspection photo of the hat-shaped rib structure proves an exquisite internal quality of the corrugated beam without defects such as inclusions and pores (Figure 13).…”

Section: Preparation Of Typical Structures Of Composite Materialsmentioning

confidence: 99%

Preparation and curing process optimization of an asymmetric impregnated vacuum bag-only prepreg

Wang

Zhang²,

Hu³

et al. 2022

Front. Mater.

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One of the most significant defects, porosity, has been proven to affect the properties of composites. It is critical to reduce the porosity of composite material and the curing cost while maintaining high laminate quality for vacuum bag-only prepreg. In this paper, a rapidly cured epoxy resin system was developed, and an alkali-free glass fiber fabric prepreg suitable for vacuum bag molding was prepared by the asymmetric impregnation method. The optimal curing process for the prepreg was determined by resin curing kinetics, dielectric viscosity, initial curing temperature, and curing time of the prepreg on the laminate quality. The optimal curing profile of the prepreg was obtained. In addition, the effect of room temperature exposure time on the properties of the prepreg was also evaluated. These laminates produced by vacuum bag molding had outstanding internal quality and mechanical properties via the changes in the asymmetric impregnation process and the curing procedure.

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Section: Preparation Of Typical Structures Of Composite Materialsmentioning

confidence: 99%

Preparation and curing process optimization of an asymmetric impregnated vacuum bag-only prepreg

Wang

Zhang²,

Hu³

et al. 2022

Front. Mater.

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“…The front runner of the aforementioned factors deciding the physical, chemical and mechanical properties of the proceeds composite material is the volume/weight fraction of the particulate reinforcement. Various techniques for the determination of volume fraction of the particulate reinforcement are metallographic image processing, Archimedes method and acid dissolution test [8][9][10][11]. In the present work, the volume fraction of the reinforcement is determined by Archimedes method and acid dissolution technique and compared.…”

Section: Introductionmentioning

confidence: 97%

Validation of Archimedes Method and Acid Dissolution Test for Volume Fraction Determination of Aluminum Alloy Composites Reinforced with Ceramic Particles

Rajasekaran

Raffic²,

Babu³

et al. 2022

MSF

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Metal matrix composites are the novel engineering materials finding applications in several extreme environmental and industrial requirements leading to the developments of numerous types of its kind in recent decades. Powder metallurgical techniques is one among the promising methods of producing intricate shaped end products out of the MMCs. Essentially the uniformity in distribution of the reinforcements and the accuracy in employing the percentile addition of the reinforcements decide the tailor made properties of these composites. There are several techniques to evaluate the reinforcement percentage and uniformity. This work concentrates on the analysis of effectiveness of volume fraction determination methods namely Archimedes test and acid dissolution test for 7075 Al/Al2O3 composite. Using the two methods the volume fraction of 7075Al/ Al2O3 composite prepared by powder metallurgy technique is determined. Advantages and disadvantages of both methods were analyzed using the result analysis and the observation indicated that the acid dissolution test produces more accurate results than the Archimedes test. In addition, the randomized selection of the specimens out of the end products leads to the corroboration of reinforcement uniformity in the composite matrix.

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“…The control is mainly carried out on metallic materials. However, the technique can also be used on other materials (as long as they are inert to the liquid itself and not excessively porous) [15,16]. The penetration of the liquid into the material occurs by capillarity, making it easy to inspect surfaces that are difficult to access [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…However, the technique can also be used on other materials (as long as they are inert to the liquid itself and not excessively porous) [15,16]. The penetration of the liquid into the material occurs by capillarity, making it easy to inspect surfaces that are difficult to access [15,16]. However, the ability of a liquid to penetrate into the surface cavities essentially depends on some factors, such as the configuration of the cavity, the surface tension, the wetting power and the contact angle of the liquid [16].…”

Section: Introductionmentioning

confidence: 99%

“…The techniques have good versatility but present shortcomings as regards the reconstruction of the shape of a defect [9,17,18]. The eddy current (ECs) method is highly versatile as it allows any application that can be correlated to the variations in the chemical-physical characteristics of any conductor [15,19]. In other words, even the slightest inhomogeneity of a material can be detected through the test coil, whether geometric, electrical or magnetic variations determine it [20].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Fuzzy Similarity-Based Approach to Classify Numerically Simulated and Experimentally Detected Carbon Fiber-Reinforced Polymer Plate Defects

Versaci

Angiulli

Crucitti

et al. 2022

Sensors

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This paper presents an eddy current approach for testing, estimating, and classifying CFRP plate sub-surface defects, mainly due to delamination, through specific 2D magnetic induction field amplitude maps. These maps, showing marked fuzziness content, require the development of a procedure based on a fuzzy approach being efficiently classified. Since similar defects produce similar maps, we propose a method based on innovative fuzzy similarity formulations. This procedure can collect maps similar to each other in particular defect classes. In addition, a low-cost analysis system, including the probe, has been implemented in hardware. The developed tool can detect and evaluate the extent of surface defects with the same performance as a hardware tool of higher specifications, and it could be fruitfully employed by airline companies to maintain aircraft in compliance with safety standards.

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Nondestructive Testing in Composite Materials

Abstract: A composite material is made of two or more constituents of different characteristics with the intent to complete the shortcomings of the individual components and to get a final product of specific characteristics and shape [...]

Cited by 7 publications

References 15 publications

Preparation and curing process optimization of an asymmetric impregnated vacuum bag-only prepreg

Preparation and curing process optimization of an asymmetric impregnated vacuum bag-only prepreg

Validation of Archimedes Method and Acid Dissolution Test for Volume Fraction Determination of Aluminum Alloy Composites Reinforced with Ceramic Particles

A Fuzzy Similarity-Based Approach to Classify Numerically Simulated and Experimentally Detected Carbon Fiber-Reinforced Polymer Plate Defects

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