Sun Powers Laser

Simulation of Autonomous Robotic Excavation

Thermal Response in Antenna Under Laser Irradiation
This investigation focuses on the thermal response of two objects under medium-intensity continuous-wave (CW) laser irradiation: (1) a homogeneous slab and (2) a complex electronic component,...

Engineering Implications of Levitating Lunar Dust
In this paper an attempt is made to provide a physical understanding of these various phenomena and their long-term effects on the lunar environment. This understanding is then applied...

Gravitational Wave Astronomy and the Lunar Ligo Concept
The preliminary proposal (LaFave and Wilson, 1993, 1992) for emplacing a modest LIGO [ Laser interferometer Gravitational Wave Observatory ] system on the Moon using unmanned robotic landers...

Laser Generation and Detection of Ultrasound in Concrete
Laser ultrasonics is a non-contact nondestructive evaluation method that uses lasers to generate and detect elastic waves. In this work, laser ultrasonics is used to produce broadband...

Estimating Laboratory Wave Reflection Using Laser Doppler
Estimates of irregular wave reflection in two-dimensional laboratory wave tanks are typically accomplished using an array of spatially separated wave gauges. This paper presents a frequency...

Measurement of Turbulent Properties in a Natural System
Instruments designed to measure flow properties in stratified estuaries, lakes and oceans are reviewed. Emphasis is given to the measurement of turbulent fluxes and recent developments...

Optical Methods for Sediment-Laden Flows
A method of distinguishing between the signals from the liquid-seed particles and sediment particles, while using LDV in sediment-laden flows, is described. The validity of the method...

Non-Intrusive Experimental Setup for Inflatable Dam Models
A method which allows for a non-intrusive evaluation of the dynamic response of the inflatable dams under overflow and impounding water conditions is presented. The internal pressure variations...

LDV System for Towing Tank Applications
The design, construction, testing, and operation of a two-dimensional LDV system for use in a towing tank is described. The primary design considerations were underwater application, minimal...

Aperture Characteristics, Saturated Fluid-Flow, and Tracer-Transport Calculations for a Natural Fracture
We used surface-profile data taken with a noncontact laser profilometer to determine the aperture distribution within a natural fracture and found the surfaces and apertures to be isotropic....

Laboratory Study of the Characteristics of Shallow Open Channel Flow Using Fiber-optic Laser Doppler Velocimetry
An experimental study was proposed to investigate the characteristics of shallow rain-impacted flow using a recirculating flume and an artificial rainfall simulator. The fibre-optic Laser...

Computer Vision Techniques for Comparing Laser Doppler Velocimeter Scans of a Vibrating Plate to Analytical Plate Modes
Computer vision procedures were applied to velocity images of a vibrating square steel plate. A scanning laser Doppler velocimeter (LDV) measured the images of low frequency resonant operating...

Comparison of Multi-sensing Methods for the Detection of Cracks in Pavement Surfaces

Microtunneling: Overview and Case Study
Microtunneling is defined in the United States as a remotely controlled, laser guided pipe jacking process, which does not require personnel entry. This paper describes the components...

Recent Wave Kinematics Experimental Studies
Kinematics in the near surface region of water waves have been measured with a laser Doppler anemometer in the laboratory. The major results of these recent wave kinematics measurements...

Laser Interferometric Characterization of Acoustic Emission Transducers
The characterization of the exact response of commercially available, piezoelectric and thin film, acoustic emission transducers is of fundamental importance for the nondestructive evaluation...

40Ar/³9Ar Laser Fusion and K-Ar Ages From Lathrop Wells, Nevada, and Cima, California: The Age of the Latest Volcanic Activity in the Yucca Mountain Area
K-Ar and 40Ar/39Ar ages from the Lathrop Wells volcanic center, Nevada, and from the Cima volcanic field,...

Use of Laser Holography and Image Analysis for Crack Measurement and Determination of Strain Fields in Cement Based Materials
The authors have successfully used laser holographic interferometry to measure various parameters, such as crack size, crack spacing, crack opening displacement, surface displacements...

 

 

 

 

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