Bond strength measurement by ultrasonic guided waves

Singher, Liviu

doi:10.1016/s0041-624x(96)00109-6

Cited by 27 publications

(16 citation statements)

References 5 publications

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“…Les revues de littérature réalisées par Scavuzzo et al [16] et par Ramanathan [17], permettent de bien résumer les résultats expérimentaux sur la valeur de la résistance en cisaillement de la glace à un substrat (Tableau 1 [18][19][20][21][22][23][24][25] [36,37].…”

Section: Valeur De La Force D'adhérence De La Glaceunclassified

Modélisation numérique et validation expérimentale d'un système de protection contre le givre par éléments piézoélectriques /

Harvey¹

2012

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Section: Valeur De La Force D'adhérence De La Glaceunclassified

Modélisation numérique et validation expérimentale d'un système de protection contre le givre par éléments piézoélectriques /

Harvey¹

2012

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“…In his model, the interfacial forces are represented by a density of springs between the two media and the springs are light enough to transmit stress instantaneously across the boundary. L. Singher [9] regarded the interface between adhesive and adherend as a spring-mass structure, and proposed a quasi-static approach, in which a density of springs with constant stiffness were used to describe the shear mechanical behavior of the interfacial adhesive-adherend.…”

Section: Introductionmentioning

confidence: 99%

Research on Ultrasonic Testing Methods for Adhesion Quality of Ceramic Coatings

Han

Chen

2017

MATEC Web Conf.

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Abstract. Ceramic coatings are widely used in aerospace field as thermal barrier materials for their high-temperature performance. The adhesion quality of ceramic coatings on metallic substrate is an important index for coating performance. The uniformity of coating thickness is also important since it determines the thermal stresses in the coatings, which means the coating performance is closely related with the uniformity. The reflection characteristic of the coating-substrate interface is an essential factor for evaluating the adhesion quality. Since the acoustic impedance of ceramic coatings is very close to that of substrate, it is not easy t o distinguish their reflection wave in the received waves. In this paper, the propagation characteristics of ultrasonic wave in coatings with different thicknesses on the substrate were researched using immersion ultrasonic testing with pulse-echo method. An algorithm based on the amplitude and phase of reflection waves was proposed for the evaluation of adhesive quality. The results show that, pulse-echo method is highly reliable for the measurement of coating thickness and that the algorithm is effective for the evaluation of adhesion quality of ceramic coatings.

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“…Most of the previous work has been performed in the area of thin laminates or thin composites, and in conventional materials such as steel and aluminum [1] [2]. There are two methods which have been proven in theory to work well in bond thickness and strength measurement, which are Lamb wave based approach, and pulse echo using bulk waves [3][4] [5]. Lamb waves and Rayleigh waves have been shown to work effectively to measure bond thickness in both bonded composite and metal plates.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic testing of adhesive bonds of thick composites with applications to wind turbine blades

Chakrapani¹,

Dayal²,

Krafka³

et al. 2012

AIP Conference Proceedings

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This paper discusses the use of pulse echo based ultrasonic testing for the inspection of adhesive bonds between very thick composite plates (thickness greater than 30 mm). Large wind turbine blades use very thick composite plates for its main structural members, and the inspection of adhesive bond-line is very vital. A wide gamut of samples was created by changing the thickness of plate and the adhesive. The influence of experimental parameters such as frequency on measurement is studied in this paper. Two different frequencies are chosen, and the measurement error bars are determined experimentally. T-Ray measurements were used to verify and correct results, and conclusions are made based on the combined results. ABSTRACT. This paper discusses the use of pulse echo based ultrasonic testing for the inspection of adhesive bonds between very thick composite plates (thickness greater than 30 mm). Large wind turbine blades use very thick composite plates for its main structural members, and the inspection of adhesive bond-line is very vital. A wide gamut of samples was created by changing the thickness of plate and the adhesive. The influence of experimental parameters such as frequency on measurement is studied in this paper. Two different frequencies are chosen, and the measurement error bars are determined experimentally. T-Ray measurements were used to verify and correct results, and conclusions are made based on the combined results.

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Bond strength measurement by ultrasonic guided waves

Cited by 27 publications

References 5 publications

Modélisation numérique et validation expérimentale d'un système de protection contre le givre par éléments piézoélectriques /

Modélisation numérique et validation expérimentale d'un système de protection contre le givre par éléments piézoélectriques /

Research on Ultrasonic Testing Methods for Adhesion Quality of Ceramic Coatings

Ultrasonic testing of adhesive bonds of thick composites with applications to wind turbine blades

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