Ultrasonics in nondestructive evaluation

Thompson, R. B.; Thompson, Donald O.

doi:10.1109/proc.1985.13367

Cited by 81 publications

(42 citation statements)

References 112 publications

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“…For example, ultrasonic testing is known to detect defects and cracks in the structures, but can also be utilized to evaluate some material parameters such as texture or grain size [1]. Ultrasonic evaluation of microstructure is based on the correlation between the ultrasound wave properties and microstructure parameters.…”

Section: Introductionmentioning

confidence: 99%

Application of laser ultrasonics to monitor microstructure evolution in Inconel 718 superalloy

Garcin

Schmitt

Militzer

2014

MATEC Web of Conferences

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Abstract. Laser ultrasonics for metallurgy is an innovative sensor dedicated to the measurement of microstructure evolution during thermomechanical processing. In this technique, broadband ultrasound pulses are generated and detected with lasers. The properties of the ultrasounds are then related to the characteristics of the microstructure. Ultrasound attenuation is primary originated by the scattering at grain boundaries and its frequency dependence can be related to the grain size. The present work aims to introduce this technology as an exciting tool for metallurgists. As an illustration of its capability, the evolution of the grain size during isothermal annealing from a fine grained structure is in-situ monitored in an Inconel 718 superalloy. Laser ultrasonic measurements are compared with ex-situ metallography observations. Indication of heterogeneous grain growth is observed, correlated to the dissolution of δ-phase particles present in the initial structure. This preliminary study illustrates the potential of this new technique to monitor microstructure evolution in more complex scenarios including recrystallization during simulation of hot forging processes.

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Section: Introductionmentioning

confidence: 99%

Application of laser ultrasonics to monitor microstructure evolution in Inconel 718 superalloy

Garcin

Schmitt

Militzer

2014

MATEC Web of Conferences

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“…The use ofLamb waves for the detection of defects and in situ process monitaring applications has been successfully pursued for many years [1][2][3][4][5][6]. The use of a laser-based Ultrasound (LBU) inspection technique to detecti defects is attractive because of the potential for rapid inspection of large areas and because it is noncontact with large standoff distances.…”

Section: Introductionmentioning

confidence: 99%

Laser-Based Ultrasound for the Inspection of Gas Pipelines

Addison

Safaeinili

McKie

1997

Review of Progress in Quantitative Nondestructive Evaluation

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“…Nondestructive testing (NDT) provides an effective way of inspecting materials for ensuring the quality and integrity of products and systems. Consequently, nondestructive inspection finds extensive application in several industries such as steel, nuclear and electronic industries for the evaluation of complex test objects with minimal interruption of routine operations [ 1].…”

Section: Introductionmentioning

confidence: 99%