Laser-acoustics

Measurements of Molecular Dephasing and Radiationless Decay by Laser-Acoustic Diffraction Spectroscopy, T. E. Orlowski, K. E. Jones, and A. H. Zewail, Chem. Phys. Lett. 54, 197 (1978). 

R. M. Kent and A. Vary, Tensile Strain Measurements of Ceramic Fibers Using Scanning Laser Acoustic Microscopy, Cer. Eng. Sci. Proc., 13[7-8], 271-278 (1992). 

Scanning laser acoustic microscopy (SLAM) - See Techniques for Materials Characterization, page 12-1. 

The accelerometer is a transducer designed to measure vertical acceleration and used to establish the inertial reference and effectively the response of the vehicle to the road surface (instant height of accelerometer in the host vehicle). The vertical distance between the accelerometer and the travelled surface is measured by displacement transducers or sensors (laser, acoustic or infrared sensors) and the distance travelled by distance transducers. Eigure 16.29 shows an accelerometer and a single sensor mid-mount on a vehicle. 

Remote sensor Laser Laser Acoustics Laser... 

Several kind of remote sensing sensors are currently available for oil spill surveillance visible sensors, thermal and visible scanning systems, hyperspecral sensors. In particular infi-ared sensors, ultraviolet UV scanners. Synthetic Aperture Radar (SAR, SLAR), microwaves radiometers, laser flourosensors, and laser-acoustic oil thickness sensors are the most commonly used in oil spill alert systems. 

J. Vollmann, D.M. Profunser, A.H. Meier, M. Dbbeli, and J. Dual, Pulse laser acoustics for the characterization of inhomogeneities at interfaces of microstructures. Ultrasonics 42 657-663,2004 A. Blouin, C. Neron, and L.P. Lefebvre, Nondestructive structure characterization by laser-ultrasonics, pp. 441-444 in MetFoam 2007—Proceedings of the 5th International Conference on Porous Metals and Metallic Foams, DEStech Publications, Inc, Lancaster, Pa., 2008. 

Scanning laser acoustic microscopy slow 25 Xm Oyb Quadrature synchronization Position of delaminations, undensified regions... 

Yu, H., Balogun, O., LL B., Miuray, T.W., and Zhang, X. (2005) Rapid manufacturing of embedded microchannels from a single layered SU-8 and determining the dependence of SU-8 Young s modulus on exposure dose with a laser acoustic technique. IEEE Proc. MEMS 05 pp. 654-657. 

SLAM Scanning Laser Acoustic Microscopy Bulk, film Acoustic wave produced by laser 1 MHz-1 GHz Reflected acoustic wave pm-cm 0.1-20 mm... 

There are other spectroscopic techniques that could find utility in the recycling industry. Laser acoustic, laser-induced emission spectral analysis, plasma emission spectroscopy, polarized light, phase contrast illumination, UV light, and fluorescent tagging have all been reported [27]. 

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