Mechanical properties are controlled to a large degree by defect structures such as dislocations and grain boundaries. These microstructural features involve a perturbation of the perfect crystal lattice (i.e. strain fields). Viewed in this context, high frequency strain waves (i.e. ultrasound) provide a natural choice to study microstructure mediated mechanical properties. In this presentation we use laser ultrasound to probe mechanical properties of materials. This approach utilizes lasers to excite and detect ultrasonic waves, and as a consequence has unique advantages over other methods—it is noncontacting, requires no couplant or invasive sample preparation (other than that used in metallurgical analysis), and has the demonstrated capa...
Localized heating produced by absorption from a pulsed laser provides an efficient noncontacting sou...
This paper will examine the principles and prospects for optically generated and detected ultrasound...
Laser vibrometry is used routinely to visualize the process of ultrasonic wave propagation on solid ...
We present our perspectives on using laser ultrasound, coupled with optical detection, to characteri...
Recent developments in laser-ultrasonic technology have made it possible to remotely inspect large a...
Laser ultrasonics for metallurgy is an innovative sensor dedicated to the measurement of microstruct...
This paper describes an innovative non contact technique whereby the mechanical properties of a mate...
This paper describes a technique to evaluate the mechanical properties of a structure without involv...
AbstractA non-contact laser ultrasound measuring system for material properties of high-strength ste...
By short laser pulses (pulse duration: 1-100 ns and pulse energy: 1-500 mJ, typically) ultrasonic si...
In this work we present a successful non-contact ultrasound laser generation and detection system fo...
Localized heating produced by absorption from a pulsed laser provides an efficient noncontacting sou...
This paper discusses CW laser generated ultrasound techniques for microstructure material properties...
Detailed understanding between microstructure evolution and mechanical properties is important for d...
Localized heating produced by absorption from a pulsed laser provides an efficient noncontacting sou...
This paper will examine the principles and prospects for optically generated and detected ultrasound...
Laser vibrometry is used routinely to visualize the process of ultrasonic wave propagation on solid ...
We present our perspectives on using laser ultrasound, coupled with optical detection, to characteri...
Recent developments in laser-ultrasonic technology have made it possible to remotely inspect large a...
Laser ultrasonics for metallurgy is an innovative sensor dedicated to the measurement of microstruct...
This paper describes an innovative non contact technique whereby the mechanical properties of a mate...
This paper describes a technique to evaluate the mechanical properties of a structure without involv...
AbstractA non-contact laser ultrasound measuring system for material properties of high-strength ste...
By short laser pulses (pulse duration: 1-100 ns and pulse energy: 1-500 mJ, typically) ultrasonic si...
In this work we present a successful non-contact ultrasound laser generation and detection system fo...
Localized heating produced by absorption from a pulsed laser provides an efficient noncontacting sou...
This paper discusses CW laser generated ultrasound techniques for microstructure material properties...
Detailed understanding between microstructure evolution and mechanical properties is important for d...
Localized heating produced by absorption from a pulsed laser provides an efficient noncontacting sou...
This paper will examine the principles and prospects for optically generated and detected ultrasound...
Laser vibrometry is used routinely to visualize the process of ultrasonic wave propagation on solid ...